Adjusting the Primary Mirror:
If the telescope is properly collimated you should see the diagonal
mirror(SeeFig.10)attheexactcenteroftheprimarymirror.Ifthediagonal
mirrorappearsoff-center(SeeFig.11)youwillneedtoadjusttheprimary
mirror(SeeFig.9)locatedontheoutsidelower-endofthemaintube.
Todothisyouwillrstneedtoloosentheprimarymirrorlockingscrews
(Fig.8-28).Thesearethescrewsthatareushagainstthesurfaceofthe
telescope. Then alternately loosen and tighten the primary mirror tilt screws
(Fig.8-29)untilthediagonalmirroriscenteredinsidetheprimarymirror.
Theprimarymirrortiltscrewsareeasilyidentiedbecausetheystickout
fromthesurfaceofthetelescope.Oncetheadjustmentiscomplete,
re-tighten the primary mirror locking screws.
Night Time Star Collimation Testing:
•Totesttheaccuracyofyourcollimation,equipyourtelescopewith
the 20mm eyepiece and focus on a moderately bright star.
•Withthestarcenteredintheeldofview,slowlyturnthefocusknob
(Fig.1-4)untilthestarisoutoffocus.
•Ifproperlycollimated,youshouldseeaseriesofconcentriccircles
aroundablackcenterdot(Fig.12-C).
•Ifthecirclesarenotconcentricandtheblackdotisnotcentered
(Fig.12A)youwillneedtomakeadjustmentstotheprimarymirror.
Loosentheprimarymirrorlockingscrews(Fig.8-28)andusethe
horizontalandaltitudeadjustmentstomovethecirclestotheedgeof
thetelescopeeldofview(Fig.12-B).Thenturntheprimarymirror
tiltscrews(Fig.8-29)untiltheblackdotmovestothecenterofthe
imagewiththeconcentriccirclesradiatingfromit(Fig.12-C).
Once centered, tighten down the locking screws.
Specications:
OpticalDesign: NewtonianReector
Aperture: 76mm(2.99”)
FocalLength: 700mm(27.56”)
Focal Ratio: 9.21
FinderScope: 10x30mm
Eyepiece1: Huygenian20mmErecting
Magnication1: 35x
Eyepiece2: Huygenian8mmErecting
Magnication2: 87.5x
Mount: UMount
Weight: 8 lbs.
Warnings:
•Neverusethistelescope(oritsviewnder)tolookdirectlyator
nearthesun.Viewingthesuncancauseinstantandirreversible
eye damage.
•Alwayssupervisechildrenwhenusingthistelescope.
•Donotleavetelescopeunattendedatanytime.Untrainedadultsor
children may not be familiar with the correcting operating procedure.
•Donotpointthetelescopeatthesunevenwhenyouarenotlooking
through it. This will cause internal damage to the telescope.
•Handlethistelescopewithcare.Roughhandlingmightknockthe
internal optical components out of alignment.
CustomerService:
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.
1716
Fig.12