Celestron 31058, 31056 instruction manual G-8N

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The G-8N

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	Figure 2-1
	G-8N with CG-5 Equatorial Mount
1. Finderscope	9. Tripod Leg Clamp
2. Finderscope Bracket	10. Leg Brace Assembly
3. Tube Ring	11. Counterweight
4. Piggyback Adapter	12. Counterweight Shaft
5. Latitude Scale	13. EquatorialMount
6. Latitude Adjustment Screw	14. Focuser
7. Tripod	15. Eyepiece
8. Accessory Tray

The G-8N • 9

Image 9

Contents C150-HD and G-8N Newtonian Page B L E N T E N T S Celestial Photography T R O D U C T I O N How to Use this Manual Word of Caution Newtonian Optical System Unpacking Your G-8N S E M B L I N G Y O U R N E W T O N I a N T E L E S C O P EG-8N C150-HD Adjusting the Tripod Height Setting Up the TripodAttaching the Accessory Tray They are needed later for polar alignment Attaching the Equatorial MountAttaching the R.A. Slow Motion Knob Attaching the Declination Slow Motion Knob Attaching the Counterweight Bar and Counterweight Attaching the Telescope to the Mount For G-8N Attaching the Telescope to the Mount For C150- HD Balancing the Telescope in R.A Removing the Lens CapCompletely Balancing the Telescope in DECG-8N C150-HD Installing the Finderscope Installing the Eye- piece Technical Specifications ActualVeiw NewtonianView Image OrientationFocusing Aligning the Finder Daytime Observing Your First LookNighttime Observing Calculating Magnification Determining Field of View Celestial Coordi- nate System T R O N O M Y B a S I C SMotion of the Stars Definition Polar AlignmentFinding the Pole Latitude Scales Pointing at Polaris Declination Drift Polar Alignment Finders Aligning the R.A Setting CircleObserving the Moon Planets L E S T I a L O B S E R V I N GObserving Deep-Sky Objects Observing the S u nUsing the Setting Circles Star Hopping Celestial Observing Transparency Viewing ConditionsSky Illumination SeeingCelestial Observing L E S T I a L P H O T O G R a P H Y Short Exposure Prime F o c u s Lunar Phase ISO Crescent Quarter 125 Full 250Piggyback Celestial Photography L E S C O P E M a I N T E N a N C E Care and Cleaning of the Optics CollimationOr back out the holder screws more than one 1 to two 2 turns T I O N a L a C C E S S O R I E S Optional Accessories Single Axis Motor Drive System #93518 Themessiercatalog Great Orion Nebula Elliptical Galaxy List of Bright Stars For Further Reading Celestron ONE Year Warranty