Celestron C21061 manual 8 9 -1AstroMaster 90AZ Refractor

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Figure 1-1 AstroMaster 90AZ Refractor

(AstroMaster 70AZ refractor similar)

1.	Objective Lens	7.	Pan Handle
2.	Telescope Optical Tube	8.	Accessory Tray
3.	Star Pointer Finderscope	9.	Tripod
4.	Eyepiece	10.	Azimuth Lock
5.	Diagonal	11.	Alt-Az Mount
6.	Focus Knob	12.	Dovetail Mounting Bracket

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Contents AstroMaster Series Telescopes Table of Contents Quick and easy no-toolset up 8 9 Figure 1-1AstroMaster 90AZ Refractor 8 9 Figure 1-2AstroMaster 114 AZ Newtonian Setting up the Tripod Moving the Telescope Manually Attaching the Telescope Tube to the MountInstalling the Diagonal & Eyepieces refractor Installing the Eyepieces on the Newtoniansin step 2 above telescope useful for terrestrial viewingPage Image Orientation FocusingAligning the Finderscope Calculating Magnification Battery CompartmentSwitch Focal Length of Telescope mmDetermining Field of View General Observing HintsThe Celestial Coordinate System Motion of the Stars Observing the Moon Observing the PlanetsObserving the Sun Lunar Observing HintsObserving Deep Sky Objects Star Hopping4.Point about halfway between these two stars Seeing Conditions TransparencySky Illumination SeeingShort Exposure Prime Focus Photography Piggyback PhotographyCCD Imaging for Deep Sky Objects Terrestrial PhotographyCollimation of a Newtonian Care and Cleaning of the OpticsAigning the Secondary Mirror Aligning the Primary Mirror Night Time Star Collimatingto achieve the necessary mirror movement You will find that additional accessories for your AstroMaster telescope will enhance your viewing pleasure and expand the usefulness of your telescope. This is just a short listing of various accessories with a brief description. Visit the Celestron website or the Celestron Accessory Catalog for complete descriptions and all accessories available Specifications Note Specifications are subject to changeAstroMaster 21061Celestron Copyright 2007 Celestron All rights reserved