TOA·150B - Takahashi

Triplet Ortho Apochromat
TOA·150B
INSTRUCTION MANUAL
TAKAHASHI
Thank you lor purchasing the TAKAHASHI TOA- 1SOB Triplet Ortho Apochromat.
The oplicel design is new Dnd is able to produce color·free, high conllast
images due 10 Its extremely high color correction. The TOA-1SOB is corrected in
the non-visible neer infrared end UV to make CCO imaging eesle,. The
optiOnally available reducers, which include soon to be released 645Reducer
for IlIrge chip CCO Cllmeras lIIld Ilatleners. tum the outstanding visual TOA­
1SOB into a flat field IIStrO ClImera.
In order to use the TOA-150B to the limit of It cllpabilltles, pleue reed Ihis
instruction manual and familiarize yourself Wilh the function Of the entire
system before using the TOA.
I
I
LhWARNING
NEVER ATTEMPT TO DIRECTLY OBSERVE THE SUN
THROUGH THE TOA.150. NEVER USE ANY SOLR OB.
SERVING DEVICE THAT DOES NOT HAVE A FUU AP­
ERTURE FILTER DESIGNED FOR SOLAR OBSERYING.
ANY DEYICE THAT DOES NOT COYER THE OBJECTlYE
WIU ALLOW THE INTERIOR OF THE INSTRUMENT TO
HEAT AND COULD CAUSE THE OBJECTIVE TO CRACK.
FURTHER, THE FINDER SHOULD BE COVERED WITH AN
LflDANi
@"
/Sf;)
OPA~UE COYER
TO PROTECT THE EYE FROM DAMAGE. USE A PIECE OF SOLAR GRADE
MYLAR TO COYER THE OBJECTIVE. AN UNCOYERED FINDER CAN
CAUSE SERIOUS EYE DAMAGE OR BUNDNESS. KEEP THE INSTRUMENT
OUT OF THE REACH OF CHILDREN DURING DAYTIME USE.
I
Lt. CAUTION
• When the TOA·1506 is placed on a sulface, make certain that the
face is flat to prevent the OTA from rolling off.
I
sur·
• Keep the lUbe assembly out of the Sun eKcept when it is being properly
used for solar observing. If left in the Sun the air inside could heat up
and cause damage to the objective.
• Keep small children away from small objects like oculars to prevent
them from accidentally swallowing a part.
• Keep Ihe shipping carton in a safe place away from any flame. It can be
used as a temporary travel container since it is triple boxed.
-2 ­
CONTENTS
Warning & Caution •..•.••.•..•.•..•.•..•.. 2
CONTENTS
3
Specifications
4
Tube Assembly layout
5
What is the TOA-150B
6
Attaching Finder & Tube Assembly
7
Focusing
11
Finder Alignment
13
Observation
15-16
PhotoNisual Accessories
17·23
Care & Maintenance
24
Additional Precaution
25
System Chart
26
- 3­
SPECIFICATIONS
I
II~~~~~~
Optical System
Air Spliced Triplet
Effectlve Apel1ure
l50mm
Focal Length
1100mm
Focal Retia ······································1: 7.3
Resoving Power
0.77"
Limillllg Magnitude
12.7
Ught Gathering Power
459X
Diameter of Main Tube
I/J 179mm
Length of Main Tube Weight 01 Main tube
990mm
20.0kg [42.7IbB]
includes 4.8kg lube coonler weight
Finder Scope
7xSOmm
;
•
111'>'
_
1110
, -------.t~'""':;~
11.
ISH
-.
­
••
16
1
===T=U=b=e=A=S=Se=m=b=IY~La~Y=O=ut===11
Oe'" Sl>ield _ _"
Dew $held lock Sen....
,... ---I
FQR--l
F""",", Hou.....
Focu .... Clamp
~-
'"
Ret'c1e Illuminator
(Optional)
Ada¢.er [Tw]
Ocul" Adapt.... (SO.8rnrn)
fit_
11,=====W=ha='=iS='=he=To=A=-=15=O=B===....11
The TOA-1SOB is 8 product of Takahashi's
wave length to the cline 81 656Oa. This IS
research and development over II period
of time. Though similar in design to the
an extremely high Older of color coHectioo.
smaller TOA·130N. its desig" is different to
lateral
"Ilow an extremely high order of 1;0101 cor·
very high contrnt image that allows mag­
rection in a 150mm refrector. This design
nifications of OYer 100x per inch or more.
produces en image ebsolutely free 01 any
l8leral color and is diffraction limited.
The TOA·l50B can produce an image of I
A design with this conection will show no
coIOf
in
Of
out of locus. The rawlt is
micron In the cenlar in <l colors. which is
The ai' spaced design of Ihe objective not
lar smaller thet the diffraction limit of the
only eorrern that the visible w!lVe length••
airy disc.
but ,Iso corrects in nallr ullra violelllnd in­
Ira red. This design is a IHIrfe<:t match lor
Tha TOA-150B has 21<lmm of back locus
CGO cameras.
which enables the user to ettech eny com­
bination 01 diagonal. bino viewer. CCO cam­
The TOA-l50B with an aperture of 150mm
era. electronic focuse, and bring the image
and a focal length of l100mm can keep the
to locus. This enhanced back focus gives
deviation over the focal lenglh 10 ±
O.Olmm in the ,rea of the 9 lioll &143608
great flexibility to the user.
-
lllNGnUDINAl R:AY ... a~RR ... nON
,,.
I
'"
Fil.2
.- .­.- .­
-, ­
e
nd -A
TUbe
sse by
11
The TOA-150B is shipped w'th the finder in
a sepa ate box to prevent damage during
shipping. Use the followil1"'l9 i· structions to
assemble the Inder and bracket and mount
it.
A aching the Finder Scope
Place the fi der
racket over the quick: re­
leas's bracket.
The holes in the base of' he finder bracket
will match up wit the holes in ,e op plate
o the quick release brBcke . A ae the
bracket with e stainless steell screws pro­
Fi g. 3
vided.
A ign he fjnder w'U, he main optics and
loc. the, finder bracket sa screws. Now
loose;
t
he long screws, on the left side 'of
e quic
eleasB bracket. The finder can
be removed a'nd reattached by sliding e
fin de br,acket into the quick release brae et
unfl it stops. You finder will be ali'goed with
the main optics.
The quioc: release brae e, snows 'the finder
to amoved ,and re~attached I ime and again
without loss of alignmen .
-7­
• Attaching the Tube Assembly to the
Equatorial Mount
Lock the De<:. and R.A. axes firmly to pre·
vent the telescope Irom moving until you
have raleased the clamps axis. Now place
the tube assembly into the tube holder,
close the holdet" over Ihe tube and tighten
the large set screws. These should be tight·
ened to allow the tube assembly to be
moved forward and backwards for balance.
See: FlQure.6.
Place the tube holder on top of the L-p1ate
and align the hates with the slots in the
plate. The insert the lour screws provided
into the holes in the bOllom and hand
tighten the screws to the tube rings.
Centl!f the tube rings in the slots in the plate
and then tighten the four sCrews with the
Allen wrench provided. See: F19ure.5.
Now it will be necessary to balance the
TOA-I5GB in both axes.
Release the Dec. clamp only to allow the
telescope 10 move up or down. Before re­
leasing the Dec. clamp, hold the focuser
with one hand in the event thaI the scope
is far out of balance and would move fasl
and hit '(QU or the mount.
The next step is to turn the tube holder so
that the bridge is parallel 10 the ground and
the top ponion of the holder is away Irom
where you Bre standing.
After releasing the Dec. clamp slowly re­
lease your grip on the locuser and watch
which way the tube move•.
If it moves obje<:live side down, then reo
turn the telescope 10 a parallel position Bnd
move the telescope towards the focuser
until it balances.
Then sel the Dec counter weight shalt par·
allelto the ground and move the telescope
parallel to the ground.
Release the R.A. clamp and you will note
that any imbalance will allow the telescope
to move up or down.
Loosen the set screws on the counter
weight shaft Bnd move the counter weights
until the telescope is balanced.
- 8­
You .... now INdy 10 the final tNlancing.
.How
Remov.lht ob;M:ltvl eo-.- and atach ..l
of Ille Imaging or oplical acc.l5Olies you
will n.ed 10 ec:eomplish whll you wish 10
do. RIPHI the proc:ea ~ wiIh you ae­
Th. TOA-l50B har been d.sign.d .....,'h a
letractable I.ns shade. Thir allowr lhe TOA
10 be<:om. more compaC1 for easier Iranr.
por1llbon 10 I.mala sit....
ow
~ieel~.
Now you 81a leady to use your TOA.l50B.
Th. balancing wiN allow you mount 10 op­
"'11. to the limn 01 ItS c:epebiUties.
<
>
to Rernc:t If'Id Extend
the t...er. Shade
The lens ahMIe can be relrec:te<l by gently
pushing it until it r.st UPOtl the ring near
Ihe objeC1i.....nd 01 the telescope. Thlr
shade is prec:iMIy lined Ind S/idet: on felt.
. , do IlOI: pleoc the lens COI<'Ir _ _ the front
to 8Iow the ... to be pushed out II' !he cov....
is place on the lens, Ihe arr Pl"ll$rure could
pop Ille lens cover off of the fronl 01 tile
• How to Use the Tube Counter W-eM
The TOA-l50B hat been d••igned 10 be
used with a wide .... rI.ty of imaging and
...isual Icc.nolie,. Ther.fOI., I count.r
bJbe weight hat been provided.
Thls -.ght is I.h lined 10 ailOYl it to be ....
ify mOVld up or down the tubl. The w.ighl
use 6mm Allen raewa. These e.n be 1oos­
ened Of tlghlened .1SIty. See F'ogur._8.
.... ­
When the l.ns r"ad. " .. been fUlly r••
tracled, men place thelenr COlfer 0 ...... the
I_shade.
'­.... _.
In order 10 ••Iend the len. slulde, do the
1. Remove thelenr shitd. cover from lhe
2. Looaen lhe two Ioc:king raews Iocaled
II the baM 01 the lens Ihade.
3. Extend lhe lenr Shade by pushing the
b"aforward.
4. rlihten Ih. IwO c:IImping 5C:rews. Re­
m.mber 10 loosen these when retrlCt_
Ing the lens shade.
... -­
o..u.....>
Fie. 8
-. ­
• Attaching Oculars & Accessories
.....".... [TW]
50 I......
5GJ E _ Tubo(L)
501 s.­
r.;,,,,,S) J1.70c0Ar.........
na-.
fie to
M12;(IO
• Compression Ring
Remove the ocular cover after loosening
the chrome lock ring by turning it counter­
clockwise. Then, intiet the ocular inlO lhe
adapter and Iootely lighten the chrome Ioclo:
fing by IlJrning i\ clockwise.
• Connecting System Parts
Study the syslem chart carefully included
in this iOS1TUCliOfl manual before connect­
ing system paf1s. 'ncorreclly connecting
sv-tem pans will 001 allow the TOA 10 fo­
cus or image will not be 81 sharp as II can
bo.
fIe. 11
- to­
ocusing
The best possible focus will' insure he igh­
Begin the focusing p ocess by choosing a
est degree of satisfaction from the TOA. Do
brigh
no forget ha
e atmosphere will limit the
ar in a convenient position. When
t you have achieved the best
you think
highest usable magnification.
focus, move the focuser inside an outside
S rt with
of what you think is the best focus. This
low powe ocular and then, by
using shorter and shor er focal length
will confirm the critical proceu e.
oculars, increase the magnification un 'I the
Begin with a low power ocular and then pro­
desired magn! Ication is achjeved.
ceed highe and highs until the desired
This process a so allows he
a
jec to
e
magnification has been achieved.
continually cente ed in the field 0 view.
When he bestfocus a high magnification
Please familiarize yourself wit the follow­
has been achieved, you may notice a bright
ing procedures.
and dim ri 9 round the s ar.
his is at
defect but rat era diffraction pattern wh'ch
is an indicatiain a di
Focusing Sys em
The TOA-150B uses a rack-and-pinio fo­
I
ae ion timi ed op­
tics.
cuser. This foe use enables the observe to
Focus apidly, Turning the focuser cloc ­
Dr:
Tube
wise will move the draw ube ou , while
urning i counter-clockwise will move· e
drawtube in. Refer to Ig. 12.
This focuser h sakahas i original
1n mi­
cro edge ocuser built-in. 1i rning the small
knob clockwise or counter-clockwise can
ae ieve very me focusi 9 a high magnffi·
ca ion or 'or imaging.
Re ave the liens shade cover and
e al ­
minum plug fr,om the 31.7mm compression
ring adapi er. Insert the diagonal prism in
0
Focusing Knob
the compression ring adapter. Carefully
tighten
e compression ring until it egins
o made contac with the barrel of the di·
agonal prism. It is not necessary 0 over·
tigh, en the ring to hold the iagonal prims.
Then insert he ocular in
0
the compres­
sion ring of the diagonal prism, repea ing
previous process. Be careful no to over­
ighten the compression ring.
-11 ­
~
The draw tube is coming au
when he knob is urned
cOUn
er-cloc
Focuser Clamp
ise.
Fig,12
• Focuser Draw Tube Clamp
The fOCtlser clamp is loeall!'d on the under­
side of the Iocuser. 11 is the haoole as shown
in Flg.13. Pulling it tow.rd, the locus knob
tightens the damp and pushing it fOfWard
loosens il. 11 is not necessary to pull Ihe
clamp with force since II light pull is suffi.
cient to hold .ny load. Do nOI over tighten
this clamp.
0
0
o
0
=
•
ccf
Ono. lube
• Camera Angle Adjuster
The Camera Angle AdjuSl.er was invented
by Tllkahashi In tIM! 1970's and jl still being
used today. It II a bearing r«atar device
thaI allows the ocular to be turned 360" to
the most comfort!lble position without loss
of focus or de-cltntering. Thffe is 11150 a
locking knob to hold the ocul"" and di.go­
nalln position.
Olif
....::/
Fi •. 13
6
Caution
Nevel loosen Ihe fOUl screws 1M3
hexagon hole bolts) under any
circmustances because these SClewS
hold Ihe f181 bearing. If these scntws
are loosened lhe focuser will become
Ioow.
- 12­
• Finder Alignment
,M,--­
V
Before pl8clng the finder Into the finder
holder, wrap lhree layers of clear cellophane
tape Iround the tube of the finder where
the front set screws make COrl1llCt with the
finder. The ,ear sel screws have a protec­
live nylon cover over the end of the screws
10 prevent Ihem Irom screlching the lube.
The 7X50 finder [sttmderdwith sets and op·
tionel olherwise] has 8 6.3· and uses an
intelfupted crosshair that allows Ihe pre·
cise centering of a star In the field of view
after the finder hes been aligned with Ihe
main optics.
An optional illuminator wilt help the ob­
server to see the crosshairsln a dart site
and make finding objects end centering
them In the field of view easier.
Ihumb screws Iocaled allhe raar ollhe
finder mounting brackel. You mav also
adjust the three set $Crews located at the
front of the holder, but ellercise caution
while doing this. vou will need a very
small slotted screw driver. It is rere that
this is necessary.
3. Nelli insert e high magnification ocular
and repeet the process until you have
used a very high magnification ocular to
center Ihe star in the field of view and
the center of the finder. Since the TOA.
1508 is supplied wilh a quick release
brackel. il would not have to be done
for a long period time.
The finder must be aligned with the main
optics ollhe TOA-150B in order 10 allow
the finder to be as useful as possible.
• A1icnment Procedta-"e
1. Remember lhat the motor drive shCHJld
be engaged when the finder is aligned
with the main optics. It is recommended
that Ihis procedure be done at night on
II bright 8ter, though it cen ba done in
daylight using a larget a few miles away.
2. Place a low power ocular in the lOA and
find a bright stat which you will center in
the field of view. Then looking through
the finder, center the staf at the center
of the inleHupled crosshair. By using the
FI&.13
• Acliustina: Serew Procedure
1. Turn all the lock nuts untillhey reach the
head 01 Ihe alignment screws.
2. In order 10 move the crossha.r in Ihe di.
rBClion of the arrow, first loosen screw
(a) and tighten lpush) the linde' with
- 13­
screw (c). This procedur,e wi!1I move the
the iIIumina.tion to be changed to Sll it the
Cfossnair i th desi e direction. The top
sky condit1ions. Turn·ng the knob counter
of the' findle will move inl the opposite
clockwise will tum the illuminator off. The
me object wUI move in the
knob will click once again whe i is· urned
direction , d
direction of the smaller ar'fOW. Refer to
off.
Fig.12.
3. In a simils' fashion the direction aT the
movement of he finder is made by ad­
justing the three screws.
learn· he rela ionship between the move­
me t of the hree adjusfng, screws. If he
mder can not be moved in e desired di­
rection, oosen the locking nuts.
OF
Replacing Batteries
View
leld of Rnder-
Before changing the batteries, make ce ain
that the r lumin to has been ,urn doff.
Unscrew the battery holder as shown 'n Fig.
14. Remove he old b
eri'ss
d replace
hem wirth fresh Ones hat hav been wiped
off
0
make certain hat t eyare
at con­
tamina ed by d"rt or grease, Chec the po­
larity and lnse Ihe batter'es into the ho de
and screw it tiOgether. Then urn he knob
View Freid of Telescope
Fig. 13
clockwise.o ma e carta"
ha the illumi­
ne or is working. he batteries you will nee
are silver V-76 PX or equivalen battery.
Optional Reticle lI1uminator
The Takahashi 7X50 a d llX70 finders wHi
Hol'd e nurled cap and tum
the ba.ttery case as arrowed
aceep t e opfonal Reticle III minator. This
i'llumina or by II minating the interrup ed
crosshair in the finders makes' he cente ­
ing of objects in he field of view easier. The
Reticle illuminator is inserted into he hole
covered by the slotted SCrew,
0 the
~ercury
Battery
(V76-PK)
/
eyepiece end of the finde . Fig.13.
Batte ry Oll se
It you wish to turn the ilium 'nater 'on, tur
the chrome knob clockwise. T e knob will
click when it is turned on. This will aHow
14 ­
Observation
II
II
• Visual Observation
• Astrophotography
• Determining Magnification
The magnification of ao.,. ocular used with
the TOA can be calculated by U$ing the to!·
focus i. the mo" crilical parI of a fine
astrophoto, Once critical focus is Khieved,
photos can be made. If possible, recheck
focus to make certain that nothing has
changed.
lowing formula.
(local length of a lltlescopel
(fOCll"ength of an acul,lI}
Thel8fofe, the shorter the focal length of
the ocular. used, the higher the magnifica­
tion produced.
During the nIght of exceptional seeing, the
TOA-150B CIn be used It 8 magnification
of 130X per inch .nd on nights of excep­
tional seeing 160X 01 more can be used.
These rare nights of exceptlOnall8eing wi.1
• Prime Focus Photography
This is the melhod 10 take photo by plac­
ing film al the focal poinl of the lelescope.
This means the telescope i, use. as a tele·
photo lens. The focal length ola telescope
I, lar longer lhan lhal 01 a camera lens.
Even a 5lighl miSlake 10 guide the telescope
will make "ar images delormed. II i' ad·
viuble to use a heavy dUly equato,ial
mounl for astropholography.
reveal fine planetary fitaments lind small
craterlel, on lhe Moon. At the lower end,
uliog II mignificillion of lOX pet inch will
produce breathtaking, Ultr8 high contrllsl
views 01 galallies, nebulae lind comets.
• Compression Ring Star Diagonals
Takahashi supplies each TOA·l5OB set [tele·
scope w/mount] with a 90 compreuion
ring 31.7mm diagonal. The compression
ring cenler.lhe OCt.Ilar and makes the opli­
cal ilJ(es of the ocular and the telescope co­
incidental,
Set the ocular into the compression ring
and carefully lighten the ring. 00 not
overugten the compression ring.
- 15 ­
• Eyepiece Projection Photography
The TCA-4 has been designed to allow the
TOA-150B to be used 101 high magnifica­
tion imaging/photography of the Moon aoo
the planets.
It is designed to attach easily and allow the
Focusing with the FM-60 focusing micro­
scope and ground gin. is shown in Fig.16.
Set the ground glass in place with the mal
side lacing the objective 01 the TOA. Then
focus and check for pinpoint focus over the
field of view.
projection magnification with any ocular
used to be changed by using the elrtend·
able ocular tube .
• Seeing
h is important that high magnification im­
ages of the Moon and planets require good
seeing. The method for determining the
quality of seeing on a scale of lto 10, with
10 being perfectly steady seeing Is to look
to the lllflith at a brighl mr. If it Is twinkliog
rapidly, the seeing i. between 1 to 4. If the
twlnklil"lg is moderate Ihls is 5-6. If the star
twlnklM slowly to no twinkling. we have the
7 10 10 night. The less twinkle the bellel.
..&.
Cautions
When laking high magnification pho­
tographs of the Moon and planets, pay
careful allentiOl1 to balance. Rebalance
the telescope when lhe object is
placed in the center of the camera.
If the telescope is moved to another
object. then rebalance it in the position
in which the photos will be taken. Do
not use the camera shuner; use the "hat
trick", black card place over the len.
5h8de before the shUller is sel on bulb.
After the vibration has stopped, re­
move the black card fOl the duration of
the photo, which will normally be in
seconds.
- 16 ­
FOCUSlr1l Screen
,......
Fil.16
Accessories for Photo/Visual Application
A wide variety of Imaging and visual ilCCl!ISsories
lila
available 101 the TOA.l50 including reducefl, flanen­
ers and II flat field 1.6)( visual elrtender.
• 57-A.ttlloa.
The 67 Flattener when used with the TOA­
1508 and 130NFB to produce II ttl90mm
image cirde with 3 micron stars 81lhe cen­
ter of the image, with 20 micron stars lit
.67.FI1I1IIlnll.
· Focallenglh
• Foo;al ratio
• Image ci,cle
the edge of the Image circle.
"""mm
• """m
tn.J
a1-~_
Fi&-11
•
3~FllIttener
This flattener is designed lor imaging with
a CeD camera, digital SLR, 35mm film cam­
era lind visually. The 35·FllIlloner lInaches
easily to Iha TOA-l50B by means of itl
.35-Flanen.,
· Focal I8ngth
· FOClII r8lio
• lmag. eirel.
10llOmm
m.2
~
40mm
50.8mm blIrrel allows imaging and visual
equipment to be easily interchanged. The
l/)40mm llat field produces 2-micron stars
in Ihe cent6f and 8-micron at the edge, dif­
fraction limited images.
=­
~SlRc.......
Fi&- 18
Ado¢...
[lW]
• J5-Reducer
h
This newly developed reducer employs 2
multi· coated elements to produce a flat
field with a focal of 1/5.7. The 35-Recucer is
= Fic.
­ t9
designed to, with the use of additional Vari­
rings; reduces the focal ratio to 1/5.1 with a
reduced image circle. The stars
si~e
• 35-Aedllcer with One Vorl.ring
· Focallen{llh
860mm
· Foeal ratio
115.7
· Imaga drclo
~ SOmm
re­
mains below 20 microns which makes it
useful for CCO cameras and digital SLR
imaging.
• 645-Reducer
The 645-Reducer is specially designed ul­
10 microns at 40mm circle and 20 microns
Ita high quality reducer to produce maxi­
at 60mm circle can be produced with illu­
mum performance of super apochromatic
mination of 100% at SOmm circle with f/5.6
optical system when large sized CCO or full­
\TOA·1508j - f/5.B\TOA·130NFB).
"ized 35mm digital SLR camera i" u"ed with
the TOA-150B or TOA-130BF modeL
In order to achieve maximum color correc­
tion near the edge of the field, 8S a rear
converter, a large sized 4-element 4-group
system is used. Due to this, image sizes of
e45~(TO"'-150S.tl
Adopter(TWJ
- t8 ­
.645 Reducer
· Foeallenglh
· Foeal ratio
· Image drcle
840mm
lfS.6
o 65mm(60%)
~ SOmm(lOO%1
• Extender-TOA I.SX
The Extender-TOA 1,SX is newly designed
a two element extender, with an ED glass
being used lor one 01 the element, that in.
creues the local length 01 the TOA-l5GB
to 16S0mm. As Its sleeve size is 5O.8mm,
ana ching and detaching is done easily. The
longer locallenglh will produce stunning
images of the Moon and plane'lS. A 35mm
camera can be attached to the Extender·
TOA 1.SX with a 50.8 extem.ioo tube and
wide T-mount camera adepter. When it is
used with the 35-Flanener,11 procuces8 flat
44mm die. circle for vi$U8I, digital SRLcam·
era CCO applicalions.
• EXlender E01,S.
· Focallengltl 1650mm
· Foc.I .elio
1/1 1.0
· 1m. ci.~I.
r; 44mm
~{S)
~EDLSX
Fil_ 21
dlllul.-!,I",
~-
Fil.22
- 19­
• CA-35
The CA-35 has been designed 10 be used
with the TOA flatteners 35 and 67. lhe Ae·
ducer TOA and the Eldender lOA 1.6X. One
version can be used with the lOA·35 flat·
tener and Extender TOA and the second
for the lOA-67 flanener.
L-J,=_
Fia. 23
CA-J5 W","T-
Fir, 24
-­
• TCA-4
It ClIn be used with a digital orfilm SLR Cllm­
era or properlv adapter CCO camera.
"'­
•• 0 ­
[J- t-ajH-;
!lOJ ~ TWo(L)
)1-'--­
31.7 0c<II0r """"'-
TCA-(
Fia.25
-20­
• T-Mount & Wide Mount T-AdaptMS
These adapters, one lor the standard
T·mounl and Ihe second lor the Wide T·
mount
f'l 26
Fil 2J
• 5-TUrTet Ocular Holder
W/ur,e Prism Diagonal
The 5-ocular lurret ocula. holder with LPO
give the visual observer great flexibility in
choosing 5 different magnificationsfOf Iheir
advanced visual studies.
--
...
Fil28
- 21 ­
.508 1/1Oth W, ..., M'lTor DI"on,1 ,nd
31 7 Compreuton Rin&
rn..em.l
Bolh 01 th.t. di,gon,lt ute , djffer."t
,mount of back focus. In '1lher c... the
CYfff 200mm of baclc locus of the "JOA.l5OB
will eIow U- 0( lOY bno ... iII! .. er 10 focus
ettily
B
__
•
-Q/-­
.-e'
_.­
I
L _ .. II....
...--
l-J
-':- ) 11 , _ 0.0,,0...1
Fi, 31
The 760 flndef CWl btl '1IXhed to the pre­
drilled tdn on the left side 01 the I~.
[USA modeII: indudI' SeopeGuard quick
rlllll'" bracket.1
If an 1b70 finder is used it can b11l1tu1Ched
dir&Ctty 10 the counler weight ring ualng the
singlllllrm holder. The ears IIr.thrHded 10
aeceplthe 1h70 findllf br'ck"
- 22­
• Solar Observing
The high quality optics of u,., TQA.l50B will
provide outstanding images of the Sun. It
is best to use high quality glass filters or H·
&DANGER
alpha filter.
-
N,ver ob•• rve the .un directly. This
will cause Instant bhndness. Cover your
finder with two Illyers of aluminized Myla,.
01 an opaque COYer finder to allow Ihe ob­
selVer to center the sun.
Sun Projection Observ.bon System
Fir 33
- 23­
Your TOA-150B apochromatic refractor
has been precisely collimated at the fac­
tory by skilled optical technicians. In the
even, as a resul of a heavy blow, colli
mation is lost, please contact your local
distributor. They will collimate the instru­
ment and return it to you.
If dust pa icles collect on the front ele­
me t, retract he dew shield and remove
the parti des by using large andpower
blower. Under 1Il0 circumstances should
canned air be used to remove t.hese pilr­
tides. Canned air co tains a refrigerant
that is very cold and could cause d m
age to the fron element
Under no circumstances shoul
he sur­
face of the front lens be rubbed, as this
could c use scratches in the coating.
Use pure cotton swabs nd a non am­
monia lens cleanerto dab bu never rube
he surface until the dirt or grease is re­
oved. Once again- NEVER RUB THE
SUA FACE 0 F TH,
OBJECTIVE WHICH
WILL CAUSE THE COATING m SCRATCH.
- 24­
Flg.3
• Keep·· he te escape away from large fluc:­
tu tions in temperature. When the in­
strumen is brought our from a warm
room to colder air, dew may form.
•
Store the telescope in a coo dry envi·
ronment. Any dew shoUllld be removed
by blowing it with a hair dryer with the
hea,ting element turned off, which means
he airw'lI be at room temperature. T is
flow of cool, room empenilture air, will
dry the dew and not leave a residue. Ad­
ditionally, i is a good idea 0 store he
el'escope with a desicant [drying agen ]
near the objective toeep any moisture
away from the objective.
As m entio ed previousely, never use
canned air due 0 the act that he pro­
pellant is a refrigerant who ch could cause
damage
0
the fron element If the ele·
ment m s1: be cleaned, ma'ke ce ,ain it
is done in a cool roo
.
Under no circums ances should t e
enses be disassembled. The lenses
have been p operly alig ,ed and se in
p.lace by skilled optical11echnician with
special tool s. Doi ng so wi! voi d any wa ­
ranty on the tube assembly.
2S ­
System Chart
IIl'====~===
[I
~
•
"
,
OM
8. Coupl;~ [TKPJl0031
13. SO" ....... (TI(POO1131
,-. CDuplinglSl [TlO"OOIOJI
"d----4"
"
lIS,
1l~>ICtI,
!TK.A:llsaosj
las, 645 A~lIC''' [TKA3258OL1
32. T-moun.
n, Wide T·moun,
:1.4, Q;gitatRm Slfl ea......
35. CA.J'5l50.81 [Tl(A3\201]
36. TCA-4l31.1j [TlW)0210]
46. OCulI< adllptet(l1/.- I (TKP(lCl01 I
47 OCu"'l3\.71
48. OC....rl50.81
40. ~p<ott'I'I(3'.71
60. hie...... TOA l,a. (TlV.OO5!lS1
68. E.,ender ED 1.5.. [Tl(A3751i'51
70. OCul¥ ~pl..t2· I rn::P21110J
7lL 50.1 ."'....ion lut.!l) fTl(P311121
U. DioogonaIrninoo [TlW)01111
fIOS.]!i lIMl_ (ll(A31582]
llOl.. 87111n_ [Tl(A315831
86.
'tal
~-"~
un
~,.~
TOA·ll1x ..........,
£~ EDl.S...., _
3&-flalle_ rptem
---- ~ 3!i.flecluc..
ecoc....."
,.
- 26­
1'/'1"'"