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Celestron C8-NGT, C10-N manual

Models: C10-N C8-NGT C8-N

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Seeing conditions directly affect image quality. These drawings represent a point source (i.e., star) under bad seeing conditions (left) to excellent conditions (right). Most often, seeing conditions produce images that lie some where between these two extremes.

disturbances vary from time-to-time and place-to-place. The size of the air parcels compared to your aperture determines the "seeing" quality. Under good seeing conditions, fine detail is visible on the brighter planets like Jupiter and Mars, and stars are pinpoint images. Under poor seeing conditions, images are blurred and stars appear as blobs.

The conditions described here apply to both visual and photographic observations.

Figure 6-1

Seeing conditions directly affect image quality. These drawings represent a point source (i.e., star) under bad seeing conditions (left) to excellent conditions (right). Most often, seeing conditions produce images that lie some where between these two extremes.

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Celestron C8-NGT, C10-N manual

Contents

Advanced Series Advanced Series GT C8-N / C8-NGTC10-N / C10-N INSTRUCTION MANUALAdjusting the Mount in Altitude TELESCOPE BASICS Some of the many standard features of the Advanced GT include C8-N Shown Fig 1-1 - The Advanced Series NewtonianC8-NGT Shown Fig 1-2 - The Advanced Series GT Newtonian11047 Setting up the TripodAttaching the Equatorial Mount 31061Attaching the Center Leg Brace Installing the Counterweight BarInstalling the Counterweight Attaching the Hand Control Holder Advanced GT Models OnlyAttaching the Slow Motion Knobs For Non-GT Models Only Attaching the Telescope Tube to the Mount Installing the Finderscope Installing the Eyepiecestelescope Balancing the Tube in R.A Balancing the Telescope in DECOF THE TELESCOPE TUBE COMPLETELY Adjusting the Mount in Altitude Adjusting the MountAdjusting the Mount in Azimuth Powering the TelescopeAttaching the Declination Cable For GT Models Only The Advanced GT Hand Control Double Stars Hand Control OperationNamed Stars Named ObjectsStartup Procedure Alignment ProceduresAuto Three-Star Align Auto AlignQuick-Align Last AlignmentRe-Alignment Finding Planets Object CatalogSelecting an Object Slewing to an ObjectRate Button Tour ModeConstellation Tour Direction ButtonsNine available slew speeds Setup Procedures1 = 2 = 1x sidereal 3 = 4 = 5 = 6 = 7 = .5º / sec 8 = 2º / sec 9 = 3º / secIdentify Precise GoTo Scope Setup FeaturesObserving Tip Helpful Hint Utility Features Helpful Hint LIST ADVANCED GTMENU ALIGNMENTA cutaway view of the light path of the Newtonian optical design Image OrientationActual image orientation as seen with the unaided eye FocusingAligning the Finderscope Calculating MagnificationGeneral Observing Hints Determining Field of ViewThe celestial sphere seen from the outside showing R.A. and DEC The Celestial Coordinate SystemMotion of the Stars Pointing at Polaris Latitude Scalesthe south celestial pole Finding the North Celestial PoleDeclination Drift Method of Polar Alignment Observing the Sun Observing the MoonLunar Observing Hints Observing the PlanetsTransparency Solar Observing HintsObserving Deep Sky Objects Seeing ConditionsSeeing conditions directly affect image quality. These drawings represent a point source i.e., star under bad seeing conditions left to excellent conditions right. Most often, seeing conditions produce images that lie some where between these two extremes Piggyback Short Exposure Prime Focus Photography Lunar Phase Terrestrial PhotographyMetering Reducing VibrationAuto Guiding Care and Cleaning of the Optics CollimationAligning the Secondary Mirror Aligning the Primary Mirror Procedure Please read this section completely before beginning Night Time Star CollimatingPage Series 2 - #94119-20 40mmSeries 1 - #94119-10 Orange, Light Blue, ND13%T, Polarizing #s 21, 80A, #15, PolarizingYellow, Deep Yellow, Violet, Pale Blue #s 8, 47, 82A, 96ND-13 Series 3 - #94119-30Light Red, Blue, Green, ND50% T #s 23A, 38A, 58, 96ND-50 Series 4 - #94119-40Page 11047 Appendix A - Technical SpecificationsAdvanced Series 31061Appendix B - Glossary of Terms Page Page CONNECTICUT APPENDIX C LONGITUDES AND LATITUDESLONGITUDE LONGITUDE LONGITUDE INTERNATIONAL CANADADescription Appendix D - RS-232 ConnectionPC Command ASCII Communication ProtocolAdditional RS232 Commands Reset The Position Of Azm Or AltSend Any Track Rate Through RS232 To The Hand Control APPENDIX E - MAPS OF TIME ZONES Page Page Page Page Page Page Page CELESTRON TWO YEAR WARRANTY Products or instructions may change without notice or obligation Celestron 2835 Columbia Street Torrance, CA 90503 U.S.A. Tel. 310Fax. 310 Copyright 2003 Celestron All rights reserved