Continued - Delaware Astronomical Society Website
Transcription
Continued - Delaware Astronomical Society Website
. to eet.. y t M r Pa wap y a S olid IANT H ual e a G n An atur Fe n i a Ag Vol. 60, No. 10, DECEMBER, 2015 Next Meeting – Tuesday, December 15th, 2015 at 7pm at the Mt. Cuba Astronomical Observatory ~ Please Join Us for Fellowship and Fun!! ANNUAL HOLIDAY PARTY & Swap Meet! The Holiday Season is here again and our next meeting will be our traditional Holiday Party. Please bring your favorite food and/or drink to share. And if you have any astrogear you would like to sell we will have tables for you to display your wares. Over the years DAS has received gifts of unused telescopes from several donors. Some we have been able to fix up and use. A few we could not use but were able to sell and are using the money to acquire other equipment that meets our needs. Our newest aquisition is a 60mm Lunt Solar Scope! If you were able to participate in our Solar Saturday event you remember comparing several solar scopes. Now we have one of our own! It becomes another benefit of DAS membership as a loaner scope (after a bit of training). It will be on display for your admiration at the meeting. Some of the other donated scopes we have received are basic beginner scopes which we have cleaned and adjusted. We will be offering these to the membership at no cost and they will be on display at the meeting. If you know a budding stargazer who might enjoy one you may place your name in an envelope on the scope and we will draw names during the party. Of course, the real gift to a budding stargazer is not the scope but the time you spend showing him/her how to use it. That’s not in the box with those department store scopes. See you Tuesday. IN THE DECEMBER ISSUE. . . “From the Observing Chair” - Fred De Lucia Public Nights Schedule at Mt. Cuba Observatory Sawin Reminder & Loaner Telescopes and Equipment DAS Forum / Email Site on Yahoo On-Site AP SIG Meetings at Ron Worden’s - Bill Hanagan December 13 Geminids How to Get Started in Astro-Photography DAS Telescope Making Special Interest Group Pages 2 & 4 Page 2 Page 3 Page 3 Pages 4-6 Page 6 Page 7 Page 7 Photos from DAS Members Page 8 From Rob Lancaster From Dave Hockenberry From Willis Greiner, Jr. From Frank Colosimo Pages 8-12 Pages 13-15 Page 16 Pages 17-18 Star Parties, Upcoming Events and Activities: See the Website at www.DelAstro.org Rates for Astronomy Technology Today & Amateur Astronomy Page 12 “NASA Science News” Space Vision The “Omics” of Space Travel The Hidden Meltdown of Greenland Hubble Peers Through the Eliptical Haze Hubble Views a Lonely Galaxy Page 19 Page 20 Page 21 Page 22 Page 22 Of Interest to ALL Members: Clear Sky Session of December 4th Member Steps Up when Nov. Speaker Can’t Appear Sawin Certification Program Astro Photos Wanted by Mt. Cuba Observatory Education Chairman Position Filled Information about Memberships & Magazine Subscriptions Contact Information for the DAS Board “The Last Word” - FOCUS Editor Joe Neuberger Page 23 Page 23 Page 24 Page 24 Page 24 Page 25 Page 26 Page 26 Each issue of FOCUS is full of useful hyperlinks. Just click on any graphic or telltale blue web address and your browser should take you to additional linked web resources. The Whirlpool Galaxy- also known as Messier 51a, M51a, or NGC 5194, is an interacting grand-design spiral galaxy with a Seyfert 2 active galactic nucleus in the constellation Canes Venatici. Credit: Photo by DAS Member Rick Davis Observing with the Delaware Astronomical Society... Trailing through Triangulum and Pieces from Pisces by Fred De Lucia, DAS Observing Chairperson Sometime in mid-November I took delivery of a new 115mm f/7 refractor. As with all new astro toys I was anxious to get it out under a dark sky, so off I went to the ChesLen Preserve and met up with Bill Hanagan, as well as Jack Goodwin and ChesMont bud Lionel with their respective 101mm f/5.4 and 130mm f/7 refractors. It was a clear night with adequate seeing. Ambient temperature was 48° F and the scope was well equilibrated showing only the most minimal signs of turbulence. The double star, Almach, revealed very good color contrast. We observed some DSOs (M15, M31, M76 and others) and then moved on to Capella for a star test. It looked like the collimation held well for the scope’s 3000 mile journey to my home but we didn’t spend much time assessing collimation as we were quickly distracted when racking inside and outside of focus. Inside of focus showed a crisp Airy disc but with somewhat oval rings which is an indication of astigmatism. Outside of focus revealed considerable fuzziness making it impossible to discern clearly an Airy disc pattern. Not so with Jack’s 101mm. His scope gave a clear textbook image of an Airy disc on both sides of focus confirming that what we saw in mine was not turbulence related. So, my new 115mm refractor is back at the manufacturer who agreed to have its objective replaced. I await its return… for further assessment. Next clear sky opportunity I met up again with astro buddy Lionel and Rob Lancaster at Coyle Field on Friday December 4. This time out was with my 18” f/4.3 and new digital setting circles, the Nexus DSC from Astro Devices. It’s a drop-in replacement for my ArgoNavis. The Nexus DSC is more intuitive with vastly superior catalogues of objects and more features. I aligned on Polaris and Altair at 5PM and GoTos were very good all night, all within 1/2° (even less at times) until I turned off the Nexus DSC at midnight to pack up. Navigation of the menus was quite natural and easily managed. First stop, from an observing list quickly generated in Skytools 3 Pro, was IC 142. I was initially shocked at what I saw in my 10mm eyepiece but then saw a familiar arcing arm with a bright region at its end. Consulting the coordinates in my Interstellarum Deep Sky Atlas confirmed that it was M33. I didn’t realize IC 142 was a HII region lying along the outer edge of one of the inner arms of M33 (the Pinwheel Galaxy) in Triangulum, which covers more than 1° x ½° angle of sky. I couldn’t confirm seeing IC 142, even with a lower power eyepiece, so now it’s a target for another time. (Continued on Page 4) “PUBLIC NIGHTS” at the Mt. CUBA OBSERVATORY... MCAO PUBLIC NIGHTS updates on programs planned. Interested individuals or groups can apply by letter or call 654-6407 (preferably between the hours of 9 and 11 am, Monday through Friday) to the Observatory to obtain reservations for these “Public Nights”. Greg Weaver The Mt. Cuba Observatory Public Nights continue year round! In addition to learning about many aspects of the heavens, you’ll have a chance to visit and view our all-digital full-dome planetarium. You can pick up a schedule when you next come to a meeting or get the latest updated version off the website at: http:// MountCuba.org. Programs are presented on Monday nights at 8pm. Please check the website for full details and The Remaining Public Nights schedule for 2015 follows: Date Speaker Topic 11 Dec. Scott Jackson Family Night- The Christmas Star 14 Dec. Scott Jackson Family Night -The Christmas Star The 24 inch Herr Telescope (Photo Courtesy Greg Weaver) -2- SAWIN OBSERVATORY REMINDER AND DAS LOANER TELESCOPES AND EQUIPMENT Bill Hanagan The DAS owns and maintains The Sawin Observatory on the grounds of the Mt. Cuba Astronomical Observatory. The Sawin Observatory houses the club’s equatorially mounted 12.5" reflecting telescope. The Sawin is also currently home base for our 17.5" split-tube Dobsonian telescope. DAS members can obtain a key for access to the Sawin Observatory by being checked out on these telescopes and the use of the observatory. Naturally, all DAS members are invited to look through these telescopes during our Member Star Parties (MSPs) at the Sawin. DAS members who are interested in becoming key holders of the Sawin Observatory should contact Greg Lee to receive training in the use of the facility and the telescopes. See more information on Page 24. LOANER TELESCOPES and EQUIPMENT 80 mm Celestron Refractor (on loan from Bill McKibben) The club currently has on loan from our Secretary, Bill McKibben, an 80 mm Celestron Refractor with a Nextar GOTO mount. Contact Bill McKibben if you would like to give this scope a try. 6” Orion Dobsonian Telescope We have a 6" Orion Sky-Quest XT6 Dobsonian reflector, complete with eyepiece set, available for loan to members. You can keep the telescope out on loan for a month or more. However, we use this telescope heavily for outreach star parties at the Woodside Farm Creamery, so if you have it on loan from April through October you may be asked to bring it out to one or more of these events. Meade 8” LX-10 Telescope We also have an 8” Meade LX-10 Schmidt Cassegrain Telescope (SCT) available for loan. This telescope is equipped with an equatorial wedge and is driven in Right-Ascension only. If you have any thoughts about buying a telescope, especially an SCT, you are strongly advised to take this one out on loan so you can learn the advantages and disadvantages of this design. Barlowed Laser Collimator Toolset Also available for loan to DAS members is Howie Glatter’s version of the Barlowed Laser Colimator. This is actually made up of a set of three very nice tools: 1) a 1.25” Glatter laser collimator (which is useful on its own for collimating the secondary mirror); 2) a 1.25” “TuBlug”, which converts the straight beam laser collimator into a “Barlowed” laser collimator, complete with a target screen that’s visible from the back end of your Newtonian telescope; and 3) an Orion 2” to 1.25” centering adapter for use with 2” focusers. Along with the center donut or triangle on your Newtonian primary mirror, a Barlowed laser collimator is a very accurate and incredibly easy way to collimate your Newtonian or Dobsonian telescope. It may sound complicated, but using the Barlowed laser collimator is incredibly quick and easy compared to earlier generations of collimation tools. As one person noted “It’s one of the handiest and most useful tools the club has ever offered for loan to the membership!” Obviously, no one DAS member can keep these collimation tools out on loan forever, but borrowing this set of tools is a great way to become familiar with the new “Barlowed Laser Collimator” approach to collimation without having to buy the tool set sight unseen. If you’re interested in borrowing any of the club’s loaner telescopes or other items, please contact Bill Hanagan, Jeff Lawrence, or Greg Lee at one of our monthly meetings. When adding or editing your profile, you will need to enter your actual name in the “Real Name” box so you can be identified as a DAS member so Don Shedrick can approve your application to join the DAS group, and everyone will know to whom they are communicating. Finally, specify your desired email address for delivery of messages. Note: You may choose to not have your name and email address displayed to any-one other than DAS members who are members of the Yahoo DAS email group. For more detailed instructions, go to the DAS website under DAS Resource Links. DAS FORUM / E-MAIL SITE ON YAHOO This is a restricted e-mail service for use by DAS members for DAS purposes. To use this site, go to http://groups.yahoo.com; search for Delaware Astronomical Society; and click on the link that comes up. To join, you must have a Yahoo ID and password; if you don’t, you can register at this time by following Yahoo’s instructions. You will then be allowed to “Join the group” upon clicking in that box. You must then register for the DAS group and add your profile by clicking on “add new profile” and completing the form -3- On-Site AP-SIG Meetings Bill Hanagan Our fourth “On-Site” AP-SIG meeting of the year was held on December 5 at Ron Worden’s backyard observatory and home. We made this an informal dinner meeting and had some excellent local Pizzas delivered. The first photo shows part of the 12’ x 14’ telescope room of the observatory, where Ron (on the right) is explaining what he does with the different telescopes. While it looks a bit packed with telescopes and AP-SIG members, Ron only uses one telescope at a time and most of the scopes can anytime more space is space required. The next photo on the following pageshows a profile view of the observatory as seen from the deck on the rear of Ron’s home. The observatory has 3 distinct parts: a warm room on the left, a telescope room in the center, and a support structure for the rolloff roof on the right. As seen in the photo, the roof has already been opened and rolled off to the right, exposing the central room where the telescopes are positioned. The dew shield on Ron’s 10” LX-200 can be seen poking above the open roof line just to the left of the door. (Continued on the following Page) From the Observing Chair (Continued from Page 2) Wanting to get deeper into using the Nexus DSC I tapped in the Tour function which turned out to be a lot of fun. One can select either a constellation tour or a “within” tour, which is what I used. I set it to find <14th magnitude galaxies within a 10° arc field of view from IC 142. It took me to the NGC 507 Group of Galaxies on the border of Pisces and Andromeda. I was able to count 6 galaxies but my atlas showed more than a dozen that should be visible in my 18” but sky conditions weren’t sufficient. The Nexus DSC next brought up the NGC 382 Group in Pisces, also known as Arp 331, a chain group of 4 discernible galaxies in my scope, but even more were shown in my atlas. Hickson 8 in Andromeda was extremely challenging but Hickson 100 and Stephan’s Quintet in Pegasus were enjoyable finds even more so be cause they are 270 to 345 million light years distant. I’ll report more on the Nexus DSC as I become more familiar with it. The rest of the night I spent running down the aforementioned Skytools list as I went about observing some comets, planetary nebulae and, of course, more galaxy groups. Temperatures were below freezing when I left at 12:30AM but Rob was still there imaging the Rosette. Helping to Save the Land Helps to Save the Skies The Delaware Astronomical Society is named among the donors under “Gifts in Kind” in the Fall/Winter issue of the Natural Lands Trust (NLT) magazine. DAS is among those honored lists because of our participation in the NLT’s Friday Night Lights, Astronomy Night and Stardust events which help to connect people to nature and to foster the NLT’s ongoing efforts to save land and steward natural resources. DAS’ mission in promoting astronomy and the NLT’s land saving efforts are complementary. As more land is saved from development, more inroads are made to suppress light pollution’s encroaching demons into our night skies. This in turn creates opportunities to share our appreciation of the unimaginable distances viewed from our home planet from such places like the ChesLen Preserve, not only among DAS members but with members of the public who sometimes experience a new found understanding of their place in the universe. In this Holiday Season of cheer and giving, few organizations can gift to its members and to the surrounding communities that of a dark sky to share. DAS’ contribution of time and resources in partnering with the NLT affords us all a better window to venerate the infinite canopy of starlight above us. Anyone who’s interested in joining me on an observing run to a dark site can email me at: [email protected] and I’ll drop you a note when planning starts, or just email me if you have questions. Those interested in knowing more about our most frequently visited observing sites can go to http://delastro.org/members/observing-sites. Clear, dark, steady skies and best wishes to all for a safe and enjoyable Holiday Season. -4- On-Site AP-SIG Meetings (Continued from preceeding page) The floor of the observatory is made from treated lumber and sits on a bed of gravel. The walls of the central telescope room are 7’ high. The most important part of the sky, the high dark area that extends 45-50 degrees down from the zenith, can be photographed or observed through the telescopes. Ron recommends that anyone following in his footsteps think carefully about reducing the height of the walls to extend the visibility even farther toward the horizon. The interior structure of the roof can be seen in the next photo. The roof is supported entirely on a series of garage door rollers (visible at the right side of the photo) and a garage door opener is used to open and close the roof. All of the exterior surfaces are clad with either vinyl or aluminum so the structure never needs to be painted. Below, most of the group stops on the porch underneath the roll-off roof for a group photo. From left to right are Bill Hanagan, Ron Worden, Rob Lancaster, Bill McKibben, Rick Davis, Bob Trebilcock, and Rick Spencer. Ron’s neighbor and friend, Walt, stepped in as the photographer for this shot. (Continued on the following Page) -5- The next photo at left shows Bill McKibben and Bob Trebilcock (left to right) basking in the heat of the warm room before heading back outside. The warm room is an optional extra that Ron had the builder add. It acts as the control center for imaging operations and houses the computer equipment, as well as a heater, air conditioner, and bookshelves. Ron insulated the warm room and put in the drywall himself, so the room stays toasty warm even on a cold winter night. On-Site AP-SIG Meetings (Continued from preceeding page) The last photo was taken during the Q&A session. Among other items, we discussed a balance problem that Rob Lancaster brought to our attention in regard to his new 6” f/4 TPO imaging Newtonian. After dinner and our Q&A session, we returned to the observatory to try some things out with Ron’s telescopes before finally closing up. It was another grand evening of camaraderie and astrophotography! The Next AP-SIG Meeting is Set for January 15 / 16 at MCAO Please mark your calendars! The specific details of the meeting (date, time, location, directions, etc.) will be announced via DAS YAHOO GROUP EMAIL as well as by direct email to AP-SIG members. December 13 Geminids Occur Near the New Moon by Bill Hanagan On December 13, a thin crescent moon will make an early appearance and will set at 7:09 PM, leaving a moonless sky for the remainder of the night, just what we need for this year’s Geminid meteor shower! The Geminids and the August Perseids are the two most reliable meteor showers in terms of producing a high Zenith Hourly Rate (ZHR) every year. You don’t have to stay up until 3 AM for the Geminids because the radiant of the shower rises very early in the evening—at 5:48 PM—and the ZHR for the Geminids is typically quite high for a period of nearly a day. By 11 PM on December 13, the radiant (apparent source point) for the Geminids will reach an altitude of 52.5 degrees, which means that you can expect to see and perhaps photograph quite a few Geminid meteors in the hours before midnight, provided the sky is clear. This means you can get out and observe the Geminids and still get plenty of sleep. In 2012, we held a special “Geminid Meteor Shower Member Star Party” at the ChesLen preserve. Several DAS members attended and enjoyed the show immensely. I took the photo below just as we were packing up and going home. Appearing from left to right are Jeff Lawrence, Rich LeMay, Bill Hanagan, Greg Lee, and Fred DeLucia. Several other attendees left earlier. Upcoming Events and Activities Extended Check out the website at http://www.delastro.org/ for all of the upcoming events and activities. There’s PLENTY going on, so be sure you’re informed and don’t miss something that would interest you -6- DAS ASTROPHOTOGRAPHY SPECIAL INTEREST GROUP Bill Hanagan The DAS astro-photography special interest group (DAS AP-SIG) meets monthly at Mt. Cuba and at our members’ homes. The AP SIG sometimes meets regardless of the weather, but some meetings are planned around specific imaging demonstrations and are “Flex-Scheduled” using email on 1-2 day notice to synchronize with the weather. AP-SIG meetings are regularly announced via the DAS Yahoo Group as well as by email to AP-SIG members. See the sidebar for a brief rundown on how to get started taking astro-photos. To join the AP-SIG, send me an email at [email protected] with your name, address, and phone number and tell me that you want to join the AP-SIG. AP-SIG meetings are informal and typically include the presentation of astrophotos taken by the members along with an extended question and answer period. The topics discussed during our Q&A sessions have covered the entire gamut of astrophotography, from how to get started with a minimum of equipment, to polar aligning your telescope, to the fine points of using auto-guiders and post-processing digital images. In addition, we often have special presentations on topics of particular interest at the time. For example he third onsite AP-SIG meeting of the season will was held Saturday, November 7 at Dave Hockenberry's home. Even if you aren’t an AP-SIG member, you’re welcome to attend the AP-SIG meetings to learn more. The subsequent meeting of the AP-SIG is currently scheduled for the weekend of January 15 - 16 at MCAO! Please mark these dates on your calendar! The specific date will be announced a day or two ahead of the meeting via DAS Yahoo Group email. On How to Get Started in Astro-Photography Bill Hanagan You can get started in astrophotography with your current camera mounted on a tripod by taking wide field photographs of meteor showers, conjunctions, constellations, and star trails. Mounting your camera “piggyback” on a motorized telescope that tracks the movement of the stars allows you to photograph a few more subjects, mostly large and bright nebulas and comets. At this level, some smaller subjects may benefit from the use of a telephoto lens. As you move to progressively fainter and smaller subjects, the demands on your equipment will grow considerably. However, as you improve your equipment, the number of subjects that you can photograph will also increase exponentially. Joining the AP SIG is a great way to learn what equipment you’ll need to photograph the subjects that interest you and to find out what specific equipment works well (or doesn’t work) before you spend your money. DAS AMATEUR TELESCOPE MAKING SPECIAL INTEREST GROUP Bill Hanagan The DAS Amateur Telescope Making (ATM) Special Interest Group (SIG) is made up of DAS members who get together to work on their own as well as club related telescope making projects. The ATM SIG meets at times and locations appropriate for whatever projects are currently underway. The general range of activities of the ATM SIG includes all manner of telescope making including Newtonian mirror making, the testing of complete telescopes as well as individual optics, and the making of telescope accessories. In the past, we’ve made several Newtonian telescope mirrors from scratch and completed some that members brought in as works in progress, including one that was started in the mid-60’s! We’ve also made new telescope tubes, made secondary mirror holders, tested numerous telescope objectives, manufactured spiders, and made many solar filters for telescopes and binoculars. We recently completed the refiguring of the DAS 17.5” Newtonian mirror. Anyone interested in joining the ATM SIG should email their name, address, and phone number to me at [email protected]. . FOCUS uses plenty of photos in banners & elsewhere each issue, and So how about you?? HAVE ANY OLD or NEW ASTROPHOTOS?? we want to use YOURS...not Hubble’s!! PLEASE email to FOCUS editor (or tell us where they can be found on the web if your photos reside therei) Photos need NOT be current. -7- Photos from DAS Members From Rob Lancaster taken at Coyle Field on November 14th, 2015... Hey guys, here are my results from November 14th at Coyle Field. I was testing out my new 6” f/4 to see how she performs. These are by no means the best it can do. This was just a test drive so to speak. I selected a number of targets that should be ideal for this scope (and probably one that was too big) and did as many as I could. All of the photos were through my brand new 6” f/4 Third Planet Optics Reflector. All of them were taken with my SBIG 8300M CCD camera, all were on my Losmandy G11 mount, and I was guiding. I was using a Paracorr mounted on the camera. And I did R, G, and B filters for most of them. For the North American Nebula, I also did some H alpha data, but that was the only one because I haven’t automated the focuser on this new scope yet. I think it is doing pretty well for a $300 telescope. The Andromeda Galaxy (M31)4 Red, 4 Green, and 4 Blue 2 minute exposures The Pleiades (M45)10 Red, 10 Green, and 11 Blue 2 minute exposures -8- Rob Lancaster (Continued) Horsehead and Flame Nebulas around Alnitakr10 Red, 10 Green, and 8 Blue 2 minute exposures North American Nebula (NGC7000 Mexico and Florida Regions)8 Red, 8 Green, and 8 Blue 2 minute exposures and 6 5 minute Hydrogen Alpha Exposures -9- Rob Lancaster (Continued) Orion Nebula (M42) and Running Man Nebula (M43)8 Red, 8 Green, and 8 Blue 1 minute exposures Nebula Here are some shots from Coyle field on Friday night when I was there with Fred and Lionel. I was using my new 6 inch scope on my Losmandy G11 mount the whole time. I was trying out the automated focuser from my big scope mounted on the small scope because I am thinking of getting a MoonLite Focuser for my small scope. Mostly I was just exploring some of the wintertime objects, because I usually don’t do them (Other than the orion area) due to the cold. But with my new boots, my new gloves, and my new hat, I was pretty happy and warm on Friday despite the fact that it got below freezing. I started with the California Nebula, since it was high in the sky at the time, then I swung down to the Witch’s Head which is at Orion’s feet which I have never taken or seen before except in photos online. Then I headed to a really cool cluster of nebulas between Gemini and Monoceros. I took brief shots of a few of them to see what they looked like and then decided to take a slightly longer picture of IC446 as an experiment. Then I took the Rosette Nebula just before the moon came up. From Coyle Field, Friday, December 4th California Nebula 4 Red, 3 Green, and 3 Blue, 5 minute exposures -10- Rob Lancaster (Continued) Witches Head Nebula 3 Red, 3 Green, and 4 Blue, 5 minute exposures IC446 3 Red, 3 Green, and 3 Blue, 2 minute exposures -11-11- Rob Lancaster (Continued) Rosette Nebula 8 Red, 8 Green, and 8 Blue, 2 minute exposures DAS Now has a Discount Subscription Rate for Astronomy Technology Today Magazine and Amateur Astronomy Magazine Astronomy Technology Today: Members can subscribe directly on-line and then in the appropriate box enter the club’s discount code which is: DAS. During the order process, members simply enter the discount code and they will receive the discounted rate at checkout. Print subscribers also have unlimited access to all current and past digital issues at no addi- tional cost. Normal print subscriptions are $18 per year. The club rate is $14 per year. The magazine is issued bi-monthly. https://www.astronomytechnologytoday.com/ Amateur Astronomy Magazine: DAS members must print, fill out and mail the form found in the “Files” section of our Yahoo email list website. . The magazine is issued quarterly. http://www.amateurastronomy.com/index.htm. -12- From NEW DAS Member and AP-SIG Participant Dave Hockenberry (Continued) Attached find Dave’s image of NGC660. This is a Polar Ring galaxy in Pisces, an unusual type of galaxy of which there are only a dozen or so known. Even among Polar Ring galaxies NGC660 is atypical, as the rings are inclined to almost 45 degrees from the main galaxy plane and apparently stable. Various sources place NGC660 at between 20 and 30 million light years distance. Image shot through a Hyperion 12.5" telescope with a QSI 583wsg CCD camera. Autoguided with Lodestar X2 guiding camera and SXAO LF Active Optics unit. Driven on an AP 1200 mount. Image capture, observatory and guiding/AO control with MaxIm DL. Images calibrated and stacked, Lum image deconvolved and RGB creation in CCDStack. L-RGB merge and further adjusments in Photoshop CS5. Total of 12.75 hours Lum (15 minute subexposures), 4 hours Green, 7 hours Red, and 4.5 hours Blue filters (all color subs 10 minutes). NGC660 -A Polar Ring Galaxy in Pisces, -13- From NEW DAS Member and AP-SIG Participant Dave Hockenberry (Continued) NGC 7380, the Wizard Nebula. Open cluster and nebulosity in Cepheus, about 7200 light years distant. Shot August and September 2011 with as Astrotech 8RC telescope and QSI583wsg camera. Autoguiding with Starlight Xpress Lodestar off-axis and SX AO LF Active Optics unit. Image capture, observatory and AO/autoguiding control with MaxIm DL. Images calibrated, stacked, RGB creation, and Lum deconvolution in CCDStack. Further image processing and LRGB merge in Photoshop CS3. 9 X 600-second Lum exposures, 5 X 300-sec Red, Green, and Blue filter exposures. Van den Berg 152, an enigmatic dust cloud in Cepheus about 1,400 light years distant. A gas cloud partly illuminated by the bright star entering the cloud on the right, but the bluish color is also partly reflected ambient light from the surrounding Milky Way. This cloud also obscures much of the red and yellow light behind it, giving it an ethereal appearance. Shot September 2012 with an AstroTech 8RC telescope and QSI583-wsg camera. Autoguiding with SX Lodestar camera off-axis and SX AO LF active Optics unit. Image capture and AO/ autoguiding control with MaxIm DL. Images calibrated, stacked, RGB creation, and Lum deconvolution in CCDStack. Further image processing and LRGB merge in Photoshop CS3. 19 x 900-second Lum exposures, 9 x 300-sec Red, green and Blue filter exposures. -14- From NEW DAS Member and AP-SIG Participant Dave Hockenberry IC342, open face spiral galaxy in Camelopardalis about 10.7 million light years distance. Also goes by the designation Caldwell 5. Shot April and May 2013 with an AT8RC telescope and QSI582wsg camera. Autoguiding with SX Lodestar camera off-axis and SX AO LF Active optics unit. Image capture, observatory and AO/autoguiding control with MaxIm DL. Images calibrated, stacked, RGB creation and Lum deconvolution in CCDStack. L-RGB merge and further image processing in Photoshop CS3. 18 X 900-second Lum images, 9 X 600-second Red, Green and Blue filter images. DAS Annual Dues were to be paid in November -- If you’ve not yet paid your DAS Dues, Please do so ASAP! THANK YOU!! -15- Photos From DAS Member Willis Greiner, Jr. (Continued) Double Cluster (Caldwell 14) / NGC869 and NGC 884 in Perseus – December 01, 2015 Image obtained 12-01-2015 through RVO's Megrez 80mm refractor with Orion field-flattener lens, using a Baadermodified Canon XSi DSLR and BackyardEOS image-acquisition software – 26 (of 28 obtained) carefully selected and stacked 120-second luminance frames combined with multiple dark, flat and bias calibration frames shot at ISO 1600 and totaling more than 140 minutes (~52 minutes effective luminance) were used to create this image; optics driven by the Losmandy G-11 mount equipped with Ovision's precision RA worm gear, guided with an Orion SSG3 Monochrome CCD camera using Maxim DL Pro and post-processed with DeepSkyStacker and Photoshop CS3 -16- Images by Member Frank Colosimo from His Blue Mountain Vista Observatory at New Ringgold, PA NGC 896 is a magnitude 7 Emission nebula and star-forming region in the constellation of Cassiopeia, and is located at a distance of 6150 light years from us. It has an apparent dimension of 10 arc minutes. It is located in the Perseus arm of the Milky Way, and makes up the Upper right part of the much larger Heart Nebula, IC 1807. Date: Oct 4 - 9 2011 Location: New Ringgold PA Optics: Hyperion 12.5 inch f/9 2532mm focal length Mount: Paramount ME Camera/Filters: SBIG STL 11000 camera Baader filters Exposure: HA: 26x20 minutes, R:15x9 min G:19x6 min B:22x8 min. The total time was 16 hours Processing: Image acquisition using CCD Autopilot. Initial processing was done using Maxim DL with subsequent processing using Photoshop. HA was used for the Luminance channel. -17- Images by Member Frank Colosimo (Continued) NGC 7814 or Caldwell 43 is an edge-on spiral galaxy in Pegasus. It lies about 40 million light years away. It has a distinctive lateral dark lane that looks like a smaller version of the Sombrero Galaxy, M104. Several faint and remote galaxies can be seen in the field. Date: Sep-Oct 2015 Location: Blue Mountain Vista Observatories,New Ringgold PA Optics: Starizona Hyperion f/8 12.5 inch, FL 2540 mm Mount: Paramount ME Camera: Apogee U8300 Guiding: ST-402 on Innovations Foresight On-Axis Guider Exposure: LRGB: L:28x10 R:18x8 min, G:17x6 min, B:19x10 min for a total of 11.9 hrs. Processing: Image acquisition using CCD Autopilot. Initial processing was done using Maxim DL with subsequent processing with Photoshop. -18- Space Vision ScienceCasts: Space Vision Nov. 17, 2015: Traveling in space has many odd effects on Many astronauts report a blurring of their eyesight in microgravity. Researchers are trying to get to the bottom of this phenomenon before astronauts travel to Mars and beyond. https://youtu.be/xtq3b_HYg9w the human body. One of the strangest has to do with vision. After spending some time on the International Space Station, many astronauts discover that they cannot see as well as they do on Earth. The effect is so well known that members of the crew routinely pack “space glasses” to correct their vision in orbit. Researchers still aren’t sure what causes the problem, but they would like to solve it before humans travel beyond low-Earth orbit. A trip to Mars could take at least three years -- five times as long as a mission to the station. So it’s important to learn about the adverse effects of microgravity on vision and develop ways to counter them. Christian Otto of the Universities Space Research Association in Houston, Texas, is one of the researchers trying to get a clearer understanding of “space vision.” He is the Principal Investigator of the Ocular Health study now underway on the space station. An accomplished off-road triathlete with an interest in human performance in extreme environments, Otto is well-suited to this PI role. He once toted an ultrasound machine up Mount Everest to study the effects of oxygen deprivation on intracranial pressure. Now, with the Ocular Health study, he’s remotely conducting similar tests on astronauts. “Testing astronauts before, during, and after their missions to the station shows us their status preflight and helps us identify changes that result from the environment and microgravity on the station,” explains Otto. On the space station, the body’s fluids, particularly the blood supply, shift toward the head much like what happens on Earth when you lie down. Therefore, it is hypothesized that the pressure inside the skull increases. That increase in intracranial pressure is believed to be transmitted to the eye and optic nerve, leading to changes in eye structure and visual acuity. Optic Disc Edema (ODE) -- swelling of the optic disc -- is the most critical change. If it persists, it can lead to a loss of peripheral vision and eventual blindness. Astronauts have experienced only mild ODE to date, but no one knows how severe it could become on a Mars expedition. “Data from this study will help researchers develop countermeasures for and reduce susceptibility to issues like ODE,” says Otto. “It will help us develop targeted treatments to prevent problems.” Adding preliminary data from the Ocular Health study to data from previous Vision Impairment and Intracranial Pressure (VIIP) studies, Otto and his team have made some interesting discoveries. “Around 70% of 33 International Space Station crewperson subjects have experienced mild VIIP, and we are finding that men are affected about twice as severely as women. ODE is measured on a scale of 0-5, with 1 being the least effected and 5 being the most. Six out of seven subjects with ODE were grade 1, while the 7th subject had a grade 3 eye. All seven subjects that developed clinical grade ODE were men. Results from the Ocular Health study will help doctors better understand disorders such as glaucoma and Idiopathic Intracranial Hypertension (IIH) that can plague people back on Earth. The latter is a condition in which cerebrospinal fluid pressure rises and remains elevated for a long time, causing severe headaches that even the strongest pain medications can’t touch. Like glaucoma, the condition sometimes leads to vision loss and blindness. Says Otto,“This study will tell us more about noninvasive measurement of intracranial pressure. The way doctors measure it now is through a spinal tap or making a burr hole in the skull and inserting an intraventricular monitor.” “We are pushing the envelope in several areas of terrestrial clinical medicine. NASA’s Ocular Health study is providing new insights in neurology, neurosurgery, ophthalmology, and cardio-vascular physiology. The clinical community is very excited.” For more on studies on the International Space Station, go to www.nasa.gov/station Click Below To -19- https://youtu.be/lgL_7-qT8S8 The "Omics" of Space Travel Nov. 15, 2015: The human body is incredibly complex. Every part of us—from our bones to our blood cells—is subject to a host of chemical reactions and molecular interactions that, without our conscious effort, keep us alive. But what happens to these processes when we leave the planet? In Earth orbit and beyond, where gravity is ScienceCasts: counteracted by a constant state of freefall and cosmic radiation intensifies, the molecuThe “Omnics” of Space Travel lar inner-workings of the human body may During an unprecedented 1-year mission to the International Space Station, scientists are change. To find out how, NASA has entered studying how astronauts' bodies respond to long-duration space travel. a realm of bioresearch known as “-omics.” “Omics” refers to the collection of data on the medley of microcosms that regulate our bodies at a molecular level. Things that work with the metabolism are grouped underneath the term “metabolome.” All of the lipids in the body are called the “lipidome.” All of the proteins? You guessed it—“proteome.” “We have launched a one-year study to understand the omics of space travel,” says Craig Kundrot, Ph.D. in the Office of the Chief Scientist at NASA Headquarters. “Astronauts are spending a year on the International Space Station, and we are looking at what happens to them on the molecular level.” This project is really two projects: First, there is the “Twins Study. NASA has twin astronauts: One of them, Mark Kelly (retired), is staying on Earth while his brother, Scott Kelly, orbits Earth. For one year, Mark and Scott will be poked, prodded, and questioned to learn if the omics of identical twins show more signficant differences than normal aging would cause after one of them spends a year in space. At the same time, Scott Kelly is involved in a separate project called the “One Year Mission.” Unlike previous expeditions to the space station, which lasted only 6 months, Scott Kelly is spending a full year onboard the station alongside Russian cosmonaut Mikhail Kornienko. This One Year Mission has its own battery of tests designed to reveal the physiological effects of long-term space flight. Why 1 year? “NASA knows a lot about what happens to astronauts after 6 months in orbit,” says Kundrot. “Deep space missions are going to take much longer than that. A round trip to Mars, for instance, might take thirty months or more. This 1-year experiment is the next, natural step in that direction.” Kundrot also notes the intangible significance of 1 year to humans. “When we leave home for 6 months, it’s like a long business trip. Leaving home for a year is a different thing. We are going to miss every birthday, anniversary, graduation and many other milestones. It feels like a big chunk of life—and this could affect the mood or behavior of the space travelers.” Indeed, some of the studies focus the astronauts’ psychological state. At the same time that blood is drawn and other samples are taken, the astronauts will be filling out questionnaires about their mood, thoughts and dreams. This approach could reveal links between the astronaut’s mental state and their molecular state. In total, more than 30 research proposals have been approved for the Twin Study and the One Year Mission—and they are well underway. The experiments began on March 27, 2015, when Kelly and Kornienko blasted off onboard a Russian rocket for their year in space. For more on studies on the international space station, go to www.nasa.gov/station Author: Ferris Molina -20- The Hidden Meltdown of Greenland https://youtu.be/xkxjyZmdJgg ScienceCasts: The Hidden Meltdown of Greenland More than 90 percent of our planet’s freshwater ice is bound in the massive ice sheets and glaciers of the Antarctic and Greenland. As temperatures around the world slowly climb, melt waters from these vast stores of ice add to rising sea levels. All by itself, Greenland could bump sea levels by 7 meters (23 feet) if its ice melted completely. And … it’s melting. NASA-supported researchers have found that ice covering Greenland is melting faster than In August 2014, Eric Rignot, a previously thought. glaciologist working at the University of California, Irvine and NASA's Jet Propulsion Laboratory, led a team in mapping ice cliffs at the front edges of three outlet glaciers in Greenland. The researchers found cavities that undercut the base of these leading edges that can destabilize the ice front and enhance iceberg calving, the process where parts of the glacier break off and float away. “In Greenland we have melt rates of a few meters a day in the summer months,” says Rignot. What’s causing this ‘big thaw’? Rignot’s team found that Greenland's glaciers flowing into the ocean are grounded deeper below sea level than previously measured. This means that the warm ocean currents at depth can sweep across the glacier faces and erode them. “In polar regions, the upper layers of ocean water are cold and fresh,” he explains. “Cold water is less effective at melting ice.” “The real ocean heat is at a depth of 350-400 meters and below. This warm, salty water is of subtropical origin and melts the ice much more rapidly.” Rignot’s research team is providing critical information needed to document this effect and accurately predict where and how fast glaciers will give way. The team gathered and analyzed around-the-clock measurements of the depth, salinity, and temperature of channel waters and their intersection with the coastal edge of Greenland's ice sheet. They found that some of the glaciers balance on giant earthen sills that are protecting them, for now. But other glaciers are being severely undercut out of sight beneath the surface, meaning they could collapse and melt much sooner. It’s not easy gathering such data. On top of the rough waters, wind, rain, and cold weather, there’s the ice itself. “We came to study glaciers that discharge into the fjord. And the fjords are full of ice. In some places it can be so full of ice that the boat can’t even push through.” But ice holds a peculiar fascination for Rignot. “I’ve always been interested in polar regions,"he says. "My friends wanted to cruise in the Caribbean but I’d rather cruise here in these waters. I don’t know why. I just like them. ”What’s next? “OMG,” answers Rignot. And he’s not using chatspeak. OMG stands for Ocean Melting Greenland -- the name of a new NASA-funded 5-year project that will take their investigation even further, to the four corners of Greenland by ship and by plane. ‘’We hope that the data collected will be a game changer for studying ice-ocean interaction in Greenland,’’ says Rignot. ‘’It will help modelers make better projections of Greenland ice sheet melt in the future.’’ Rignot’s results have been accepted for publication in the journal Geophysical Research Letters and are now available online. Aug. 28, 2015: Click to and Stay Informed About EVERYTHING to do with Man’s Exploration of the Universe! http://science.nasa.gov/science-news/ -21- Hubble Peers Through the Elliptical Haze Like a lighthouse in the fog, the luminous core of NGC 2768 slowly fades outwards to a dull white haze in this image taken by the NASA/ ESA Hubble Space Telescope. The galaxy is also mamarked by a prominent plume of dust reaching out from the center and lying perpendicular to the galaxy’s plane. This dust conceals a symmetrical, Sshaped pair of jets that are being produced by the supermassive black hole as it feeds. NGC 2768 is an elliptical galaxy in the constellation of Ursa Major (The Great Bear). It is a huge bundle of stars, dominated by a bright central region, where a supermassive black hole feasts on a constant stream of gas and dust being fed to it by its galactic host. Image credit: ESA/Hubble, NASA and S. Smartt (Queen's University Belfast) Last Updated: Dec. 4, 2015 Editor: Ashley Morrow Hubble Views a Lonely Galaxy Only three local stars appear in this image, quartered by right-angled diffraction spikes. Everything besides them is a galaxy; floating like a swarm of microbes in a drop of water, and brought into view here not by a microscope, but by the Advanced Camera for Surveys on the Hubble Space Telescope. In the foreground, the spiral arms of MCG+01-02-015 seem to wrap around one another, cocooning the galaxy. The scene suggests an abundance of galactic companionship for MCG+01-02-015, but this is a cruel trick of perspective. Instead, MCG+01-02-015’s unsentimental naming befits its position within the cosmos: it is a void galaxy, the loneliest of galaxies. -22- Clear sky session Friday night Report of December 4th, 2015 by Phil Moyer I opened the Sawin at 6:10 and started setting up my gear. I was startingobservations around 7. Greg Lee had a group of high school students at MCAOfor a few hours, too. Shortly after I started fussing with the camera to get it set up, Bill H.dropped by. He transferred huge amounts of knowledge and helped me outtremendously. He even refrained from dismissing my little telescope and Nikon camera. :-) Bill taught me how to properly star align the telescope,since I had been doing it poorly and, as a result, was getting star trailsin my pictures. He taught me the value of a higher-powered eyepiece for doing the star alignment, how to properly center the star in the field ofview (the trick for me was taking off my glasses and refocusing), andrecommended a crosshair reticle eyepiece. Fortunately, it's pretty easy to replace previously-entered stars on the Celestron and re-align the scope.He also pointed out that I really need a dew heater on the telescopebecause it started to fog up as soon as we took the dew shield off tocollimate the telescope (see next paragraph). Next, Bill noticed the telescope needed collamination. I had no idea howdo that, so we went to the workship to get a small phillips headscrewdriver, and then Bill showed me how to properly collimate thetelescope by adjusting the secondary. One of the fascinating things wasseeing the thermals inside the telescope from the temperature differential. I need to put my jewler's screwdriver set in one of my astronomy backpacks. Once we got *those* issues addressed, the telescope was tracking much moreaccurately. I observed and imaged: - M45 - the Pleiades;- M42 - the great Orion nebula; - NGC884 - half the Double Cluster;- M33; - M32; - M31 - the Andromeda galaxy This is an unstacked frame of M42 right out of the camera (well, I didscale the iage in post to make it smaller, and adjust the levels). Not abad night for a novice astrophotographer! This was, btw, the first time I'dever taken pictures through a telescope, even though I have a very goodbackground in photography. I have a list of deep sky objects I'd like to observe/image. I have somethings I need to adjust on the telescope - namely, setting the slew limitsso the camera doesn't hit the mount. I also need to practice focusing thecamera using the viewfinder. I think getting a copy of BackyardNikon wouldbe helpful here because I can then use the software to fine-focus thetelescope. Bill also showed me how to piggyback a camera mount on the 12.5" reflectorin the Sawin, then showed me how to use BackyardEOS (I believe it was) tocapture images off the camera and control camera settings. He was testing a new lens for his Canon (a Sigma f/1.4, IIRC) with a light pollution filter.Greg stopped by after his event to say "hi" and see how we were doing. Before I packed up, a little after three in the morning, I shot a series ofdarks at 10, 15, 20, 25, 30, and 45 second expoures. I'll have to note thatit was 27 degrees when I shot those darks. Now I need to figure out the post-processing workflow of stacking thelights and darks. I've only ever done that (and it was over a year ago)with data from the Hubble Space Telescope, so I'll have to learn theprocess essentially from scratch. I hope to make it to the AP-SIG meeting tonight. Member Steps Up When November Speaker was Unable to Appear Jeff Lawrence I would like to give a giant thanks, and job well done to Mark Phillips! When we discovered that a mix-up left us with a room full of DAS members, and no speaker for the November meeting, Mark jumped right up and gave a really good talk he had at the ready! It was a unique topic, and very well presented. And this came from a member who just joined the club 2 months ago! Way to jump right in, Mark! What I like best about the club is the variety of interest and backgrounds of the different members that adds to the diversity of our activities. it is also great when more members jump in to help out, as in a volunteer organization, the club will only be as strong as the collective involvement of its members. Thanks again Mark! You really saved the day and it was greatly appreciated! -23- Sawin Certification Program Fred De Lucia The Sawin is the major centerpiece of DAS. In the past it was in use much more often and by a number of members on every clear Friday night. It has been largely underutilized for a number of reasons. One reason, I believe, is that newer members or members who do not own a telescope might feel intimidated by the equipment and the observatory’s layout. We hope to address this by instituting the Sawin Certification Program. With the new upgrades installed, its use will be more inviting and user friendly to both new and experienced members. Certified Key Holders of the Sawin have access to its use at any time without supervision . The Program will consist of a minimum of 2 sessions, scheduled at the Sawin, to obtain the necessary knowledge and experience in using the Sawin equipment. These sessions will be supervised by a current Sawin Key Holder. The first session, likely set for a weekend in the daylight (even if it’s cloudy), will familiarize learners with the layout of the Sawin and overall operation, including opening the roof, uncovering and covering the telescopes, handling eyepieces and pointing the telescopes, etc. If the supervising Sawin Key Holder determines that progression during the first session is acceptable, then the second session will be scheduled for a clear sky night session to address night time use of the equipment. The Sawin Certification Program is for DAS members only who are in good standing and 16 years of age or older. Participants in the program who are under 18 years of age must be accompanied by a parent or guardian. For information or sign-up, please contact Greg Lee, DAS President at [email protected]. ASTRONOMICAL LEAGUE MEMBERSHIP · · · The DAS offers an optional membership in the Astronomical League (AL) at a discounted rate. AL membership dues are $7.50 per year and are due on June 1 for all members. Prorated discounts for new memberships starting mid-year are as follows: April 16 - July 15: $7.50 per member July 16 - Oct 15: $5.62 per member Oct 16 - Jan 15: $3.75 per member Jan 16 - April 15: $1.87 per member Members should make their check out to DAS and mail it to the Treasurer whose information is below:: Jeff Lawrence DAS Treasurer 815 Leeds Lane Newark, DE 19711 Jack Goodwin Steps Up to be Education Chairperson Jack Goodwin has come forward to fill the important Board position of Education Chair. We thank Jack and wish him luck in this new and important endeavor Call for DAS AstroImages for Display in Mt. Cuba Lobby MCAO is asking for any DAS members to submit their astroimages for display in the Observatory. It would like to display the club member’s talents and update some of the images currently on display in the lobby of the Observatory. Images will be displayed for up to a year and replaced as new images are submitted. Full credits to the imager will be included. Please include all technical information with the image (date, telescope and camera used, exposure time, image processing software, etc.). You may email digital images to the Mt. Cuba website. Photos may be sent to the Observatory or brought to a DAS meeting. The Observatory looks forward to displaying your beautiful images! Contact Greg at [email protected]. -24- INFORMATION ON DAS MEMBERSHIPS AND MAGAZINE SUBSCRIPTIONS DAS MEMBERSHIP · DAS membership dues are $30.00 per year and due on November 1 for all members. - There is no need to renew membership until the treasurer contacts you during the membership renewal drive starting in mid-October. · New members joining at various times of the year may be eligible for a prorated dues amount. - $20 when joining March-May - $10 when joining June-August - $30 for joining September-October through November 1 of the following year. SKY & TELESCOPE MAGAZINE · · · · · · The DAS offers subscriptions to Sky & Telescope at a discounted rate of $32.95 per year. Subscriptions to S&T will be processed by the club for the first subscription year only. The publisher should then send renewal notices directly to the subscriber at the club rate of $32.95. You may receive renewal offers for amounts other than $32.95. If so, check to see if they are special offers and how close you are to your renewal date. Your subscription expiration date should be displayed on the mailing label on your magazine. If you are within 3 months of your renewal date and still have not received the correct renewal notice, please contact the publisher and tell them you should receive the member rate. ASTRONOMY MAGAZINE · · · · The DAS offers subscriptions to Astronomy magazine at a discounted rate of $34.00 per year. Subscriptions to Astronomy will be processed by the club for the first subscription year only. Your subscription expiration date should be displayed on the mailing label on your magazine. Renewals can be handled by all club members on the Astronomy.com website using the following steps: a. go to www.astronomy.com b. select the ‘customer service’ link in the upper right corner c. select the ‘renew your subscriptions’ link d. enter your customer number (found on the mailing label), postal code, and the renewal code of ‘RCLUB040’ and click ‘continue’ e. follow the remaining steps from there. NEW MEMBERSHIP FORM · · Please review the membership and magazine information above carefully. PLEASE fill out the membership form below completely. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- -- - - - NEW MEMBERSHIP FORM Please be sure to review the Membership and Magazine information above carefully. Please make checks payable to DAS and forward to: Jeff Lawrence, Treasurer, 815 Leeds Lane, Newark, DE 19711 Senior / Family Membership $30.00/20.00/10.00 Junior Membership (15 or under) $10.00 Sky & Telescope Magazine $32.95 Astronomy Magazine $34.00 Total: Name_________________________________________________Email Adress________________________________ Street Address_________________________________________________Phone Number______________________ City___________________________________________________________State______Zip___________________________ Notes_________________________________________________________________________________________________ For questions or concerns, contact Jeff Lawrence, DAS Treasurer at (302) 668-8277 or [email protected] -25- DAS CONTACTS Please call any of us with your concerns! Board members: Officers: President: Greg Lee -- 302-762-5358 or [email protected], Vice-President: Rob Lancaster -- also, Program Chair & Future Web Site Development -- [email protected] Secretary: Bill McKibben, Secretary [email protected] Treasurer: Jeff Lawrence [email protected]; (302) 668-8277also Sky & Telescope & Astronomy magazine issues Board Members at Large: Terry Lisansky [email protected] Glenn Bentley -- 610-869-0706 or [email protected] Bill Hanagan -- 302-239-0949 or [email protected], also Astronomical Photography Special Interest Group; Amateur Telescope Making Special Interest Group; By-Laws;Observatory and Equipment Improvements Standing Chairs: Publications: Joe Neuberger -- 302-723-2734 or [email protected], also, FOCUS Newsletter article/photo contributions Observing: Fred DeLucia -- 609-410-8943 or [email protected], also, Elections Chair and Awards Chair Education: Jack Goodwin - (610)-457-2945 or [email protected] Observatory: Open Position (contact Pres. Greg Lee with questions) Library Maria Lavalle and Sue Bebon Other Chairs: MCAO Web Page: www.MountCuba.org DAS Web Page: www.DelAstro.org Other Contacts: Astronomical League Coordinator: Lynn King - [email protected] SEE PRECEEDING PAGE FOR NEW MEMBERSHIP FORM If you have questions, call any of the member representatives listed. Otherwise, just check the appropriate boxes and complete the form on the preceeding page. Print it or cut it off and send it with your check to Jeff Lawrencet his address on the form. The magazine prices are group rates to DAS members. If you’re just joining us for the first time, THANK YOU VERY MUCH, and WELCOME to the DAS! It’s GREAT to have you with us! The Last Word. . . FOCUS editor Joe Neuberger I can hardly believe that this is my 74th issue as Your Publications Chair and FOCUS Editor, which I have been doing since September, 2008. And it has been my Pleasure to serve the membership in this manner. I strive to make each issue of the FOCUS a little better than the last, and hope I succeed in that effort. Only YOU can say. And I look forward to another year in 2016. So, before 2015 comes to a close, let me say “Thank You” for your wide ranging support, and to wish Everyone a sincere “Happy Holidays!” And “Best Wishes for a Safe & Happy New Year to ALL!”