Celestron 93517 Bedienerhandbuch

C150-HD AND G-8N NEWTONIANINSTRUCTION MANUALModels #31056 and #31058

10 • The C150-HD 1. FinderscopeBracket 9. Accessory Tray 2. Finderscope 10. Counterweight 3. Tube Ring 11. Counterweight Shaft 4.

The G-8N • 11The tripod comes fully assembled with the metal plate, called the tripod head, thatholds the legs together at the top. In additi

12 • The C150-HDThere are three wing bolts that hold the accessory tray to the center leg brace.1. Locate the three wing bolts.2. Place the ac

The G-8N • 13The equatorial mount allows you to tilt the telescope’s axis of rotation so that youcan track the stars as they move across the s

14 • The C150-HDAttaching the R.A. Slow Motion KnobWith the mount securely in place, you are ready to attach some of the accessories(the teles

The G-8N • 15Attaching the Declination Slow Motion KnobLike the R.A. slow motion knob, the DEC slow motion knob allows you tomake fine pointin

16 • The C150-HDAttaching the Counterweight Bar and CounterweightThe last item to be mounted before the telescope tube is the counterweight ba

The G-8N • 17Before you attach the optical tube, fully tighten the right ascension and declinationclamps. This will prevent the telescope fro

18 • The C150-HDBefore you attach the optical tube, make sure that the declination and right ascensionclamps are tight. The optical tube atta

The G-8N • 19The G-8N lens cover has a 1-1/2" cap covering an aperture stop that is offset fromthe center. To utilize the aperture stop,

20 • The C150-HDThe telescope should also be balanced on the declination axis to prevent anysudden motions when the DEC clamp is released. To

The G-8N • 21For the purpose of polar alignment, there are two directions in which the mount canbe adjusted; vertically, which is called altit

22 • The C150-HDThe entire telescope and mount is light enough to pick up and carry outside for acasual observing session. If, however, you w

The G-8N • 23To install the finderscope onto the telescope you must first mount the finderscopethrough the finder bracket and then attach it to

24 • The C150-HDThe eyepiece, or ocular as it is also called, is an optical element that magnifiesthe image focused by the telescope. Without

The G-8N • 25Below is pertinent technical information on your G-8N and C150-HD telescope thatyou may find useful.G-8N C150-HDOptical System: Ne

26 • Telescope BasicTELESCOPE BASICSOnce your telescope has been fully assembled and the accessories attached,you are ready to take a look. T

Telescope Basics • 27To focus your telescope, simply turn the focus knob located directly below theeyepiece holder (see figure 2-13). Turning t

28 • Telescope BasicAccurate alignment of the finder makes it easy to find objects with the telescope,especially celestial objects. To make a

Telescope Basics • 29With the telescope fully assembled and all the accessories attached you areready for your first look. Your first look shou

TABLE OF CONTENTS▲▲▲▲▲ INTRODUCTION ...

30 • Telescope BasicNighttime ObservingLooking at objects in the sky is quite different than looking at objects on Earth.For one, many objects

Telescope Basics • 31As implied in the previous section, you can change the power of yourCelestron telescope just by changing the eyepiece (ocul

32 • Astronomy BasicsASTRONOMY BASICSThis section deals with observational astronomy in general. It includes infor-mation on the night sky, p

Astronomy Basics • 33Like the Sun, the stars also appear to move across the sky. This motion is causedby the Earth’s rotation. For observers

34 • Astronomy BasicsFigure 4-3When the telescope’s axis of rotation is parallel to the Earth’s axis, stars viewedthrough the telescope appear

Astronomy Basics • 35For each hemisphere, there is a point in the sky around which all the otherstars appear to rotate. These points are call

36 • Astronomy BasicsLatitude ScalesThe easiest way to polar align a telescope is with a latitude scale. Unlikeother methods that require you

Astronomy Basics • 37Pointing at PolarisThis method utilizes Polaris as a guidepost to the celestial pole. Since Polarisis less than a degree

38 • Astronomy BasicsDeclination DriftThis method of polar alignment allows you to get the most accurate alignmenton the celestial pole and is

Astronomy Basics • 39Polar Alignment FindersThere are two finders specifically designed for polar alignment that can be usedwith the CG-4 and

Observing the Moon ...

40 • Celestial ObservingCELESTIAL OBSERVINGWith your telescope set up, you are ready to use it for celestial observing.This section covers vis

Celestial Observing • 41Observing Deep-SkyObjectsAlthough overlooked by many amateur astronomers, solar observation is bothrewarding and fun.

42 • Celestial ObservingUsing the Setting CirclesOnce the setting circles are aligned you can use them to find any object with knowncoordinate

Celestial Observing • 43Star HoppingYou can use your setting circles to find these objects (as described earlier inthis manual) or try star ho

44 • Celestial ObservingStar hopping may take some getting used to since you can see more stars throughthe finder than you can see with the na

Celestial Observing • 45Viewing conditions affect what you can see through your telescope during anobserving session. Conditions include tra

46 • Celestial Observingtemperature, don’t touch the telescope tube with your hands. When pointing thetelescope, hold the telescope by the st

Celestial Photography • 47CELESTIAL PHOTOGRAPHYAfter looking at the night sky for awhile you may want to try photographing it.Several forms of

48 • Celestial PhotographyShort exposure prime focus photography is the best way to begin recording celestialobjects. It is done with the cam

Celestial Photography • 49The exposure times listed here should be used as a starting point. Always makeexposures that are longer and shorter

Introduction • 5INTRODUCTIONWelcome to the Celestron world of amateur astronomy! Celestron has beenproviding amateur astronomers with the too

50 • Celestial Photography9. Close the camera’s shutter.As for lenses, use good ones that produce sharp images near the edge of thefield. The

Maintenance • 51TELESCOPE MAINTENANCEAfter you have set up your telescope and started using it, there are a few things toremember for future r

52 • MaintenancePrior to collimating the primary mirror holder, locate the three (3) screws on the endplate at the end of the tube. Unthread t

Optional Accessories • 53OPTIONAL ACCESSORIESThe following is a partial list of optional accessories available for your CelestronC150-HD and G

54 • Optional Accessories• Lanthanum Eyepieces (LV Series) - Lanthanum is a unique rare earthglass used in one of the field lenses of this new

Optional Accessories • 55Single Axis Motor Drive System - #93518By adding the MDCG-5 Drive System to your mount, you add the capacity toautom

56 • The Messier CatalogTHE MESSIER CATALOGTHE MESSIER CATALOGTHE MESSIER CATALOGTHE MESSIER CATALOGTHE MESSIER CATALOGThe Messier Catalog, co

The Messier Catalog • 57M#M#M#M#M#NGC#NGC#NGC#NGC#NGC#Const.Const.Const.Const.Const.R.A.R.A.R.A.R.A.R.A.DECDECDECDECDECMagMagMagMagMagTypeType

58 • The Messier CatalogM#M#M#M#M#NGC#NGC#NGC#NGC#NGC#Const.Const.Const.Const.Const.R.A.R.A.R.A.R.A.R.A.DECDECDECDECDECMagMagMagMagMagTypeType

List of Bright Stars • 59LIST OF BRIGHT STARSLIST OF BRIGHT STARSLIST OF BRIGHT STARSLIST OF BRIGHT STARSLIST OF BRIGHT STARSThe following is

6 • IntroductionThis manual is designed to instruct you in the proper use of your CelestronNewtonian telescope. The instructions are for asse

60 • Astronomy BooksFOR FURTHER READINGThe following is a list of astronomy books that will further enhance your understanding of the night sk

CELESTRON ONE YEAR WARRANTY A. Celestron warrants this telescope to be free from defects in materials and workmanship for one year. Celestron wil

2835 Columbia StreetTorrance, CA 90503Tel. (310) 328-9560Fax (310) 212-5835www.celestron.comCopyright 2002 Celestron All rights reserved.(Products or

Introduction • 7FAMILIAR WITH THE CORRECT OPERATING PROCEDURES OF YOURTELESCOPE.NEVER USE AN EYEPIECE SOLAR FILTER OR A HERSCHELWEDGE SOLAR FI

8 • The C150-HDASSEMBLING YOUR N E W T O N I A N T E L E S C O P EThis section covers the proper assembly instructions for your G-8N and C

The G-8N • 9 1. Finderscope 9. Tripod Leg Clamp 2. Finderscope Bracket 10. Leg Brace Assembly 3. Tube Ring 11. Counterweight 4. Piggy