Carson Optical RP-300 Telescope User Manual


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Adjusting the Primary Mirror:
If the telescope is properly collimated you should see the diagonal mirror
(SeeFig.10)attheexactcenteroftheprimarymirror.Ifthediagonal
mirrorappearsoff-center(SeeFig.12)youwillneedtoadjusttheprimary
mirror(SeeFig.10)locatedontheoutsidelower-endofthemaintube.To
dothisyouwillrstneedtoloosentheprimarymirrorlockingscrews(Fig.
9-39).Thesearethescrewsthatareushagainstthesurfaceofthetelescope.
ThenalternatelyloosenandtightenthePrimaryMirrorTiltScrewsuntilthe
diagonal mirror is centered inside the primary mirror. The primary mirror
screwsareeasilyidentiedbecausetheystickoutfromthesurfaceofthe
telescope.Oncetheadjustmentiscomplete,re-tightentheprimarymirror
locking screws.
Night Time Star Collimation Testing:
•Totesttheaccuracyofyourcollimation,equipyourtelescopewith
the 20mm eyepiece and focus on a moderately bright star.
•Withthestarcenteredintheeldofview,slowlyturnthefocus
wheel(Fig.1-4)untilthestarisoutoffocus.
•Ifproperlycollimated,youshouldseeaseriesofconcentriccircles
aroundablackcenterdot(Fig.13-C).
•Ifthecirclesarenotconcentricandtheblackdotisnotcentered
(Fig.13A)youwillneedtomakeadjustmentstotheprimarymirror.
Loosentheprimarymirrorlockingscrews(Fig.9-39)andusethe
R.A.andDec.cablestomovethecirclestotheedgeofthetelescope
eldofview(Fig.13-B).Thenturntheprimarymirrortiltscrews
(Fig.9-40)untiltheblackdotmovestothecenteroftheimagewith
theconcentriccirclesradiatingfromit(Fig.13-C).Oncecentered,
tighten down the locking screws.
Specications:
OpticalDesign: NewtonianReector
Aperture: 114mm(4.49”)
FocalLength: 900mm(35.43”)
FocalRatio: 7.89
FinderScope: 6x30mm
Eyepiece1: Kellner20mm
Magnication1: 45x
Eyepiece2: Kellner9mm
Magnication2: 100x
Mount: Equatorial
Weight: 19.7 lbs.
Warnings:
•Neverusethistelescope(oritsviewnder)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.
2120
Fig.12 Fig.13
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