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Celestron C9-S Auto Guiding, Telescope, Standard, With, Model, Cassegrain f/10, Reducer/Corrector

Models: C5-S C9-S C8-S

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Telescope

		Telescope	Standard	With
		Model	Cassegrain f/10	Reducer/Corrector
				f/6.3
	Focal	C5-S	49" (1250mm)	31" (788mm)

		C8-S	80" (2032mm)	50.4" (1280mm)
	Length &	C8-S	80" (2032mm)	50.4" (1280mm)
	Speed
	Speed	C9.25-S	93" (2350mm)	58" (1481mm)
		C9.25-S	93" (2350mm)	58" (1481mm)

		C5-S	13 x 10 (arc	20.5 x 15.7 (arc min)
			min)	20.5 x 15.7 (arc min)
	ST 237		min)
	ST 237	C8-S	8 x 6.1 (arc	12.6 x 9.7 (arc min)
	F.O.V.*		min)	12.6 x 9.7 (arc min)
	F.O.V.*		min)
		C9.25-S	6.9 x 5.3 (arc	11 x 8.4 (arc min)
			min)	11 x 8.4 (arc min)
			min)

*Field of view calculated using SBIG ST 237 CCD camera with 4.7mm x 3.6mm chip.

Table 7-3

Auto Guiding

The Advanced GT telescope has a designated auto guiding port for use with a CCD autoguider. The diagram below may be useful when connecting the CCD camera cable to the telescope and calibrating the autoguider. Note that the four outputs are active-low, with internal pull-ups and are capable of sinking 25 mA DC.

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Image 46

Celestron C9-S, C8-S, C5-S Auto Guiding, Telescope, Standard, With, Model, Cassegrain f/10, Reducer/Corrector, f/6.3, F.O.V

Contents

C5-S C8-S C9.25-S Advanced Series Advanced Series GTINTRODUCTION ASSEMBLYHAND CONTROL TELESCOPE BASICS Some of the many standard features of the Advanced GT include Declination Setting Circle CounterweightsCounterweight Bar Latitude Adjustment ScaleAdvanced C8-SGT Shown On/Off SwitchFigure 2.2 - Advanced Series GT Hand Control#11025 Setting up the Tripod#11071 #11045Attaching the Equatorial Mount Installing the Counterweight BarAttaching the Center Leg Brace Attaching the Hand Control Holder Advanced GT Models Only Installing the CounterweightAttaching the Slow Motion Knobs For Non-GT Models Only Attaching the Optical Tube to the Mount Attaching the Visual BackInstalling the Eyepiece Installing the Star DiagonalInstalling the Finderscope Removing the Lens Cap Rear CellMoving the Telescope Manually Balancing The Mount in R.ABalancing The Mount in DEC Adjusting the MountAdjusting the Mount in Altitude NOT LET GO OF THE TELESCOPE TUBE COMPLETELYAdjusting the Mount in Azimuth Powering the TelescopeAttaching the Declination Cable For GT Models Only The Advanced GT Hand Control Named Objects Hand Control OperationNamed Stars Double StarsAlignment Procedures Startup ProcedureAuto Align Auto Three-Star AlignLast Alignment Quick-AlignRe-Alignment Slewing to an Object Object CatalogSelecting an Object Finding PlanetsDirection Buttons Tour ModeConstellation Tour Rate Button1 = 2 = 1x sidereal 3 = 4 = 5 = Setup ProceduresNine available slew speeds 6 = 7 = .5º / sec 8 = 2º / sec 9 = 3º / secIdentify Precise GoTo Observing Tip Helpful Hint Utility Features Helpful Hint ALIGNMENT ADVANCED GTMENU LISTActual image orientation as seen with the unaided eye Image OrientationReversed from left to right, as viewed with a Star Diagonal Aligning the Finderscope FocusingCalculating Magnification Determining Field of View General Observing HintsThe Celestial Coordinate System The celestial sphere seen from the outside showing R.A. and DECMotion of the Stars Latitude Scales Pointing at PolarisFinding the North Celestial Pole DefinitionDeclination Drift Method of Polar Alignment Observing the Planets Observing the MoonLunar Observing Hints Observing the SunSeeing Conditions Solar Observing HintsObserving Deep Sky Objects TransparencySeeing 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 Short Exposure Prime Focus Photography Crescent Eyepiece ProjectionLunar Phase QuarterMoon Long Exposure Prime Focus PhotographyPlanet Mercury10. Open the shutter using a cable release 2. Remove all visual accessories6. Set the shutter speed to the B setting 3. Thread the Radial Guider onto your telescopeReducing Vibration Terrestrial PhotographyMetering CCD ImagingStandard Auto GuidingTelescope WithCare and Cleaning of the Optics CollimationTo make collimation a simple procedure, follow these easy steps Series 1 - #94119-10 40mmOrange, Light Blue, ND13%T, Polarizing #s 21, 80A, #15, Polarizing Series 3 - #94119-30 Series 2 - #94119-20Deep Yellow, Red, Light Green, ND25% T #s 12, 25, 56, 96ND-25 Light Red, Blue, Green, ND50% T #s 23A, 38A, 58, 96ND-50Page 11071/11072 Appendix A - Technical SpecificationsAdvanced Series 11025/11026Appendix B - Glossary of Terms Page Page APPENDIX C LONGITUDES AND LATITUDES CONNECTICUTLONGITUDE LONGITUDE LONGITUDE CANADA INTERNATIONALPC Command ASCII Appendix D - RS-232 ConnectionCommunication Protocol DescriptionReset The Position Of Azm Or Alt Additional RS232 CommandsSend 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 Copyright 2003 Celestron All rights reserved Celestron 2835 Columbia Street Torrance, CA 90503 U.S.A. TelFax Products or instructions may change without notice or obligation