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Carson JC-200 User guide

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50668 0057371
©2007 CARSON OPTICAL
HAUPPAUGE NY 11788
www.carson-optical.com
MADE IN CHINA
©2009 CARSON OPTICAL
HAUPPAUGE NY 11788
www.carsonoptical.com
MADE IN CHINA
©2009 CARSON OPTICAL
HAUPPAUGE NY 11788
www.carsonoptical.com
MADE IN TAIWAN
©2010 CARSON OPTICAL
HAUPPAUGE NY 11788
www.carsonoptical.com
MADE IN TAIWAN
©2010 CARSON OPTICAL
HAUPPAUGE NY 11788
www.carsonoptical.com
MADE IN CHINA
©2011 CARSON OPTICAL
HAUPPAUGE NY 11788
www.carsonoptical.com
MADE IN CHINA
©2014 CARSON OPTICAL
RONKONKOMA NY 11779
www.carson.com
MADE IN CHINA
©2012 CARSON OPTICAL
HAUPPAUGE NY 11788
www.carsonoptical.com
MADE IN CHINA
©2013 CARSON OPTICAL
HAUPPAUGE NY 11788
www.carson.com
MADE IN CHINA
©2011 CARSON OPTICAL
HAUPPAUGE NY 11788
www.carsonoptical.com
MADE IN TAIWAN
TABLE OF CONTENTS
Introduction
Box Contents / Visual Key Diagram
Telescope Assembly
•SettingupYourTripod
•AttachingtheEyepieces
•RemovingtheEyepieces
UsingtheTelescope
Calculating Power
CareandMaintenanceofYourTelescope
Specications
Warnings
CustomerService
Warranty Information
CongratulationsonyourpurchaseofaCarsonJC-200SkySeeker
TM
telescope.Thistelescopefeaturesaneasy-to-usedesignandhigh
performanceopticsthatareperfectforbeginningastronomers
lookingtoexplorethewondersofouterspaceandtheworldaround
them.Pleasereadthismanualcarefullytoensurethatyouassemble
anduseyourtelescopecorrectly.Whenusedproperly,your
SkySeeker
TM
telescopeshouldprovideyearsofexcitingobservations
oftheuniverse.PleasenotethatthisNewtonianReectortelescope
wasdesignedforastronomicalviewingonly.
IMPORTANT:DONOTUSEYOURSKYSEEKER
TM
TELESCOPETO
LOOKATORNEARTHESUN!DOINGSOWILLCAUSEINSTANT
ANDPERMANENTEYEDAMAGE.
2
3
4
4-5
6
6
7
7
7
8
2
•CompleteOpticalTubeAssemblyonDobsonianTabletop
Mount
•8mmHuygenianEyepiece(1.25”O.D.).
•20mmHuygenianEyepiece(1.25”O.D.).
Pleaseunpackyourtelescopecarefullyandmakesurethatall
accessoriesareincludedinthebox.
VISUAL KEY DIAGRAM
BOX CONTENTS
3
SettingUpYourTelescope:
Themountandopticaltubeassemblycomespreassembledand
ready-to-use.Carefullyremovethetelescopefromthebox.
AttachingtheEyepieces:
InserttheHuygenian20mmeyepieceintothefocuserandrotate
clockwiseintofocuseruntiltight.Becarefulnottoover-tighten
theeyepiece.
RemovingtheEyepieces:
Toremoveeyepieces,holdontothesilvermetalportionofthe
eyepiece,androtatecounter-clockwiseuntilloose,andremove
from focuser.
Onceyouhaveproperlyassembledyourtelescopeyouareready
to start using it.
•First,placeyourtelescopeonastablesurfaceorholdthemount
steadily in your arms.
•Tolocateanobjectusingthetelescope,rstloosenthealtitude
lockknoballowingthetelescopetorotatefreelyalongbothaxes.
•Aimtheopticaltubeassemblyatyourdesiredtargetbyrotating
theazimuthpositionleftorright.Lookthroughtheeyepieceat
thedesiredtarget,andmakealtitudeadjustmentsbymovingthe
opticaltubeassemblyverticallybyhand.Whenthealtitudedirec-
tionisaligned,youmayre-tightenthealtitudelockknob.
•Oncetheobjectiscenteredintheeldofview,turnthefocuser
untiltheimageisclearandsharp.
•Itisbesttousethelowestpowereyepiece(theHuygenian20mm
eyepiece)atrst.Thisallowsforawidereldofviewmakingit
easiertolocateobjects.Oncetheobjectiscenteredintheeldof
viewyoucanswitchtheeyepiecetohighermagnications.
•Youwillnoticethattheviewthroughthetelescopeisinverted
(upside-down).Thisiscommonintelescopesusedforastronomi-
calviewing.Atnightitisbesttostartbylookingatthemoonor
othereasytondcelestialobjects.Asyoubecomemoreexperi-
encedusingyourtelescopeyoucanbegintotrylocatingharder
tondobjects.
TELESCOPE ASSEMBLY
USING THE TELESCOPE
4
•Ifyouareviewingcelestialobjects,youwillnoticethattheobjectwill
slowlymoveacrosstheeldofview(causedbytherotationofthe
Earth).Youwillneedtoslowlymovethetelescopeverticallyand/or
horizontallytokeeptheobjectcentered.
Therearemanyconditionsthatmayaffectyourabilitytofocusor
observecelestialobjectsclearly.
•Brightlylitareas(lightpollution)willmakeitdifculttoseefaint
objectsinthesky.Itwillalsomakeitdifcultforyoureyestoadjust
tothedark.Youshouldtryandndadarkareaandallowyoureyes
toadjusttothedarkbeforemakingobservations.Usingaredltered
ashlighttoviewchartsandyourtelescopecomponentsisrecom-
mendedtopreserveyournightsight.Thebestviewingconditionsare
whentheskyisinkyblack.
•Hazyskies,pollution,cloudsandmoisturecanallaffecttheclarityof
yourviewingimage.
•Avoidtouchingtheeyepieceoropticaltubewhilelookingthrough
thetelescope.Thevibrationscausedbythiscontactwillcausethe
objectyouarelookingattomove.Youshouldalsomakesurethat
thesurfaceyouplaceyourtelescopeondoesnotvibrateormoveas
thiswillalsocauseyourviewingobjecttomove.
•Youshouldavoidsettingupyourtelescopeinsidearoomlooking
throughanopenwindow.Thedifferenceinairtemperaturesmay
result in a blurry image.
•Viewingthroughaclosedwindowmightalsoresultinadistortedim-
ageduetothevaryingdensitiesofwindowglass.
•Avoidviewingobjectsthatarelowonthehorizon.Objectsthatare
higherupintheskywillappearmuchsharper.
•Suddenchangesintemperaturemaycausecondensationtoappear
ontheopticalcomponentsofthetelescope.Itisbesttosetupyour
telescopeaheadoftimeandthenwaitwhilethetelescopeadjuststo
thenewtemperaturebeforeusingit.
USING THE TELESCOPE CONT.
5
Themagnicationofatelescopedependsonboththefocallength
ofyourtelescopeaswellastheeyepieceyouuse.Thereisasimple
formulayoucanusetodeterminethemagnicationyouareusingat
anygiventime.Simplydividethefocallengthofthetelescopebythe
focallengthoftheeyepiece.Forexample,ifyouareusingtheincluded
20mmeyepiecewithyourJC-200telescopethepowerwouldbe:
Power=300mm/20mm=15x
Usinganeyepiecewithasmallerfocallengthwillincreasethemagni-
cationofyourtelescope.Itisalwaysbesttostartatthelowestmagni-
cationconguration.Thewidereldofviewmakesiteasiertospotfar
awayobjects.Onceanobjectiscenteredinyoureldofviewyoucan
switchtothehigherpowercongurations.
•Alwaysreplacedustcoversandlenscapswhennotinuse.Thiswill
minimizetheamountofdustanddebristhatgetsintoyourtelescope.
•Cleaningshouldbeperformedonlyifabsolutelynecessary.Ifdust
hasbuiltupontheopticsuseasoftcamel’shairbrushorpressurized
airtogentlyremoveit.
•Ifdewcollectsontheopticsofyourtelescopeormoisturecondenses
insidetheoptics,removeallaccessoriesandplacethetelescopeina
dry,dustfreeenvironmentandpointthetelescopedownward.This
shouldhelpeliminatethemoisture.
•Avoidtouchingthesurfaceofthemirror.
•Donotattempttotakeapartyourtelescopetocleanit.
CALCULATING POWER
CARE AND MAINTENANCE
6
OpticalDesign: NewtonianReector
Aperture: 76mm(2.99”)
FocalLength: 300mm(11.8”)
FocalRatio: f/3.95
Eyepiece1: Huygenian20mm
Magnication1: 15x
Eyepiece2: Huygenian8mm
Magnication2: 37.5x
Mount: Dobsonian(Alt-azimuthmount)
Weight: 3.7lbs.
•Neverusethistelescopetolookdirectlyatornearthesun.
Viewingthesuncancauseinstantandirreversibleeyedamage.
•Alwayssupervisechildrenwhenusingthistelescope.
•Donotleavetelescopeunattendedatanytime.Untrainedadultsor
childrenmaynotbefamiliarwiththecorrectingoperatingprocedure.
•Donotpointthetelescopeatthesunevenwhenyouarenotlooking
throughit.Thiswillcauseinternaldamagetothetelescope.
•Handlethistelescopewithcare.Roughhandlingmightknockthe
internal optical components out of alignment.
Wewillbehappytohelpyouwithanyproblemsyoumayexperience
whileusingyourtelescope.Pleasecallourtoll-freecustomerservice
lineat1-800-967-8427.
SPECIFICATIONS
WARNINGS
CUSTOMER SERVICE
7
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DuringthisperiodCarsonwill,atitsoptionandwithoutcharge,either
repairanypartorassemblyofpartsfoundtobedefectiveinmaterialor
workmanship,orreplacethisCarsonproductwithaCarsonproductof
comparablevalueandcondition,subjecttothelimitationsandexclusions
notedherein.
Thiswarrantyextendstotheoriginalpurchaseronlyandisnot
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Thiswarrantygivesyouspeciclegalrights,andyoumayalsohaveother
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excludingorlimitingincidentalorconsequentialdamages.Ifso,the
abovelimitationsorexclusionsmaynotapplytoyou.
Provideproofofpurchase.Areceiptorotherdatedproofofpurchase
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ToobtainanRAcall631-963-5000,orwritetoCarsonWarrantyService,
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WARRANTY INFORMATION
8
50668 0057371
©2007 CARSON OPTICAL
HAUPPAUGE NY 11788
www.carson-optical.com
MADE IN CHINA
©2009 CARSON OPTICAL
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