Triplet Ortho Apochromat TOA·150B - teleskop-austria.at · Thank you lor purchasing the TAKAHASHI...

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Triplet Ortho Apochromat TOA·150B INSTRUCTION MANUAL TAKAHASHI

Transcript of Triplet Ortho Apochromat TOA·150B - teleskop-austria.at · Thank you lor purchasing the TAKAHASHI...

  • Triplet Ortho Apochromat

    TOA150B

    INSTRUCTION MANUAL

    TAKAHASHI

  • Thank you lor purchasing the TAKAHASHI TOA- 1SOB Triplet Ortho Apochromat. The oplicel design is new Dnd is able to produce colorfree, 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 TOA1SOB 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.

    LhWARNINGI 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.

    I LflDANi @"/Sf;)

    FURTHER, THE FINDER SHOULD BE COVERED WITH AN 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.

    Lt. CAUTIONI I When the TOA1506 is placed on a sulface, make certain that the sur

    face is flat to prevent the OTA from rolling off.

    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 1723 Care & Maintenance 24 Additional Precaution 25 System Chart 26

    - 3

    http:..........

  • SPECIFICATIONS IIII~~~~~~

    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 - 990mm Weight 01 Main tube 20.0kg [42.7IbB]

    includes 4.8kg lube coonler weight Finder Scope 7xSOmm

    ;

    111'>' _ 1110

    11.ISH,-------.t~'""':;~

    -.

  • 161 ===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

    research and development over II period

    of time. Though similar in design to the

    smaller TOA130N. its desig" is different to

    "Ilow an extremely high order of 1;0101 cor

    rection in a 150mm refrector. This design

    produces en image ebsolutely free 01 any

    l8leral color and is diffraction limited.

    The ai' spaced design of Ihe objective not only eorrern that the visible w!lVe length

    but ,Iso corrects in nallr ullra violelllnd in

    Ira red. This design is a IHIrfe

  • 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

    vided.

    A ign he fjnder w'U, he main optics and loc. the, finder bracket sa screws. Now

    loose; he long screws, on the left side 'of

    t e quic eleasB bracket. The finder can be removed a'nd reattached by sliding e

    finde 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 .

    Fi g. 3

    -7

  • Attaching the Tube Assembly to the Equatorial Mount

    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.

    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.

    Lock the De

  • You .... now INdy 10 the final tNlancing.

    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 aeow ~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.

    < >

    How to Use the Tube Counter W-eM

    The TOA-l50B hat been digned 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.

    ...-

    .How to Rernc:t If'Id Extend the t...er. Shade Th. TOA-l50B har been d.sign.d .....,'h a letractable I.ns shade. Thir allowr lhe TOA

    10 be Fie. 8-.

  • Attaching Oculars & Accessories

    .....".... [TW] 50 I...... 5GJ E_ Tubo(L) 501 s. r.;,,,,,S) J1.70c0Ar......... na-.

    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.

    fIe. 11

    fie to

    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.

    - to

  • ocusing The best possible focus will' insure he igh

    est degree of satisfaction from the TOA. Do

    no forget ha e atmosphere will limit the

    highest usable magnification.

    S rt with low powe ocular and then, by

    using shorter and shor er focal length

    oculars, increase the magnification un 'I the

    desired magn! Ication is achjeved.

    This process a so allows he a jec to e continually cente ed in the field 0 view.

    Please familiarize yourself wit the follow

    ing procedures.

    Focusing Sys em

    The TOA-150B uses a rack-and-pinio fo

    cuser. This foeuse enables the observe to

    Focus apidly, Turning the focuser cloc

    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 micro 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

    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.

    Begin the focusing p ocess by choosing a

    brigh ar in a convenient position. When you think t you have achieved the best

    focus, move the focuser inside an outside

    of what you think is the best focus. This

    will confirm the critical proceu e.

    Begin with a low power ocular and then pro

    ceed highe and highs until the desired

    magnification has been achieved.

    When he bestfocus a high magnification

    has been achieved, you may notice a bright

    and dim ri 9 round the s ar. his is at

    defect but rat era diffraction pattern wh'ch

    is an indicatiain a di ae ion timi ed opI

    tics.

    Dr: Tube

    Focusing Knob ~ The draw tube is coming au Focuser Clamp when he knob is urned cOUn er-cloc ise.

    Fig,12

    -11

  • 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

    =

    Olifccf ....::/Ono. lube 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.

    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 ratar 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.gonalln position.

    - 12

  • V

    Finder Alignment

    ,M,--

    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 proteclive 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 observer to see the crosshairsln a dart site and make finding objects end centering them In the field of view easier.

    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

    -

    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.

    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

    Cfossnair i th desi e direction. The top

    of the' findle will move inl the opposite

    direction , d me object wUI move in the direction of the smaller ar'fOW. Refer to

    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 moveme t of the hree adjusfng, screws. If he mder can not be moved in e desired direction, oosen the locking nuts.

    View leld of Rnder-

    View Freid of Telescope Fig. 13

    Optional Reticle lI1uminator

    The Takahashi 7X50 a d llX70 finders wHi

    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

    eyepiece end of the finde . Fig.13.

    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

    the iIIumina.tion to be changed to Sll it the sky condit1ions. Turnng the knob counter

    clockwise will tum the illuminator off. The

    knob will click once again whe i is urned

    off.

    OF

    Replacing Batteries 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

    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.

    Hol'd e nurled cap and tum the ba.ttery case as arrowed

    ~ercury Battery (V76-PK) /

    Batte ry Oll se

    14

  • ObservationII II Visual Observation

    Determining Magnification The magnification of ao.,. ocular used with

    the TOA can be calculated by U$ing the to!

    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 exceptional seeing 160X 01 more can be used.

    These rare nights of exceptlOnall8eing wi.1

    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 TOAl5OB 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.

    Astrophotography

    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.

    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.

    - 15

  • Eyepiece Projection Photography

    The TCA-4 has been designed to allow the

    TOA-150B to be used 101 high magnification imaging/photography of the Moon aoo

    the planets.

    It is designed to attach easily and allow the 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 photographs 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, remove the black card fOl the duration of the photo, which will normally be in seconds.

    Focusing with the FM-60 focusing microscope 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.

    FOCUSlr1l Screen

    ,...... Fil.16

    - 16

  • Accessories for Photo/Visual Application

    A wide variety of Imaging and visual ilCCl!ISsories lila available 101 the TOA.l50 including reducefl, flaneners 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 .67.FI1I1IIlnll. image cirde with 3 micron stars 81lhe center of the image, with 20 micron stars lit

    the edge of the Image circle.

    Focallenglh Foo;al ratio Image ci,cle

    """mmtn.J """m

    a1-~_

    Fi&-11

    3~FllIttener

    This flattener is designed lor imaging with .35-Flanen.,a CeD camera, digital SLR, 35mm film cam Focal I8ngth 10llOmmera lind visually. The 35FllIlloner lInaches FOClII r8lio m.2

    easily to Iha TOA-l50B by means of itl lmag. eirel. ~ 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, diffraction limited images.

    =

    ~SlRc....... Fi&- 18

  • Ado... [lW]

    J5-Reducer

    This newly developed reducer employs 2

    multicoated elements to produce a flat

    field with a focal of 1/5.7. The 35-Recucer is

    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 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

    Ita high quality reducer to produce maxi

    mum performance of super apochromatic

    optical system when large sized CCO or full"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

    h

    =

    Fic. t9

    35-Aedllcer with One Vorl.ring Focallen{llh 860mm Foeal ratio 115.7 Imaga drclo ~ SOmm

    10 microns at 40mm circle and 20 microns

    at 60mm circle can be produced with illu

    mination of 100% at SOmm circle with f/5.6

    \TOA1508j - f/5.B\TOA130NFB).

    .645 Reducer Foeallenglh 840mm Foeal ratio lfS.6 Image drcle o 65mm(60%)

    ~ SOmm(lOO%1

    e45~(TO"'-150S.tl Adopter(TWJ

    - t 8

  • 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,

    anaching 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 lOA35 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 Cllmera or properlv adapter CCO camera.

    0

    [J-"'

    )1-'--t-ajH-; !lOJ ~ TWo(L) 31.7 0c

  • --

    T-Mount & Wide Mount T-AdaptMS

    These adapters, one lor the standard

    Tmounl 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/-

    l-J 11 ,_ 0.0,,0...1

    .-e'L_ .. II.... I _.-':-) ...--Fi, 31

    The 760 flndef CWl btl '1IXhed to the predrilled 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 &DANGERis best to use high quality glass filters or H alpha filter. -N,ver obrve 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 instrument and return it to you.

    If dust pa icles collect on the front ele

    me t, retract he dew shield and remove the partides by using large andpower Flg.3 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

  • 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 propellant is a refrigerant whoch 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. Doing so wi! void any wa

    ranty on the tube assembly.

    2S

  • System Chart [IIIl'====~=== ~

    , 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 Tmoun, :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