Celestron CR-150 HD instruction manual Ngc#, Const, Type, Proper Name, H M S, The Messier Catalog

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M#	NGC#	Const.	R.A.		DEC	Mag	Type	Proper Name
			H M S		° ‘
M81	NGC 3031	UMa	9	55.8	69 04	6.8	Sp. Gx.	Bodes Nebula
M82	NGC 3034	UMa	9	56.2	69 41	8.4	Ir.Gx.
M83	NGC 5236	Hya	13	37.7	-29 52	7.6	Sp. Gx.
M84	NGC 4374	Vir	12	25.1	12 53	9.3	El. Gx.
M85	NGC 4382	Com	12	25.4	18 11	9.2	El. Gx.
M86	NGC 4406	Vir	12	26.2	12 57	9.2	El. Gx.
M87	NGC 4486	Vir	12	30.8	12 24	8.6	El. Gx.	Virgo A
M88	NGC 4501	Com	12	32.0	14 25	9.5	Sp. Gx.
M89	NGC 4552	Vir	12	35.7	12 33	9.8	El. Gx.
M90	NGC 4569	Vir	12	36.8	13 10	9.5	Sp. Gx.
M91	NGC 4548	Com	12	35.4	14 30	10.2	Sp. Gx.
M92	NGC 6341	Her	17	17.1	43 08	6.5	Gl. Cl.
M93	NGC 2447	Pup	7	44.6	-23 52	6.2	Op. Cl.
M94	NGC 4736	CVn	12	50.9	41 07	8.1	Sp. Gx.
M95	NGC 3351	Leo	10	44.0	11 42	9.7	Sp. Gx.
M96	NGC 3368	Leo	10	46.8	11 49	9.2	Sp. Gx.
M97	NGC 3587	UMa	11	14.9	55 01	11.2	P. Neb.	Owl Nebula
M98	NGC 4192	Com	12	13.8	14 54	10.1	Sp. Gx.
M99	NGC 4254	Com	12	18.8	14 25	9.8	Sp. Gx.	Pin Wheel Nebula
M100	NGC 4321	Com	12	22.9	15 49	9.4	Sp. Gx.
M101	NGC 5457	UMa	14	03.2	54 21	7.7	Sp. Gx.
M102	NGC 5457	UMa	14	03.2	54 21	7.7	dup
M103	NGC 581	Cas	1	33.1	60 42	7.4	Op. Cl.
M104	NGC 4594	Vir	12	40.0	-11 37	8.3	Sp. Gx.	Sombrero Galaxy
M105	NGC 3379	Leo	10	47.9	12 35	9.3	El. Gx..
M106	NGC 4258	CVn	12	19.0	47 18	8.3	Sp. Gx.
M107	NGC 6171	Oph	16	32.5	-13 03	8.1	Gl. Cl.
M108	NGC 3556	UMa	11	11.6	55 40	10.0	Sp. Gx.
M109	NGC 3992	UMa	11	57.7	53 23	9.8	Sp. Gx.
M110	NGC 205	And	0	40.3	41 41	8.0	El. Gx.
Object Abbreviations:
• Sp. Gx		Spiral Galaxy
• El. Gx		Elliptical Galaxy
• Ir. Gx		Irregular Galaxy
• Op. Cl		Open Cluster
• Gl. Cl		Globular Cluster
• D. Neb		Diffuse Nebula
• P. Neb		Planetary Nebula
NOTE:	All coordinates for the objects in the Messier catalog are listed in epoch 2000.00.

The Messier Catalog • 55

Image 55

Contents The CR-150HD Model #210176 Refractor ii Table of Contents T A B L E O F C O N T E N T SAssembling the CG-5Equatorial Mount Table of Contents Using the Lens Cap Aperture Stop4 Introduction I N T R O D U C T I O NIntroduction How to Use This Manual AWordofCautionThe Mount The Refractor Optical System6 Introduction Unpacking Your CR-150HD A S S E M B L I N G Y O U R C R - 1 5 0 H DThe CR-150HD Assembling the CG-5Equatorial Mount Setting Up the Tripod Adjusting the Tripod HeightTripod Head 10 The CR-150HD Attaching the Accessory TrayAttaching the Equatorial Mount 12 The CR-150HD Attaching the R.A. Slow Motion KnobAttaching the Declination Slow Motion Knob 14 The CR-150HD 1.Lock the DEC clamp to hold the mount in placeTube Rings Dovetail Bracket Attaching the Telescope to the Mount16 The CR-150HD Balancing the Telescope in R.ACOMPLETELY Balancing the Telescope in DECAdjusting the Mount in Azimuth Adjusting the Mount in Altitude18 The CR-150HD OPTICAL TUBE Technical SpecificationsDisassembling and Transporting Your CR 150 HD Storing Your CR- 150 HDThe Eyepiece Attaching the AccessoriesT E L E S C O P E B A S I C S The Star DiagonalBuilt-inT-Adapter 1 1/4 AccessoryFocuser Tension AdapterAttaching the Finder Focusing22 Telescope Basics Aligning the Finder NEVER POINT YOUR TELESCOPE AT THE SUN UNLESS Image OrientationYourFirstLook DaytimeObservingNighttime Observing Determining Field of View Calculating Magnification26 Telescope Basics GeneralPhotographyHints Your Celestron telescope can be used for both terrestrial and astronomical photography. Your telescope has a fixed aperture and, as a result, a fixed f/ratio. To properly expose your subjects photographically, you need to set your shutter speed accordingly. Most 35mm single lens reflex SLR cameras offer through-the-lens metering that lets you know if your picture is under or overexposed. This is important for terrestrial photography where exposure times are measured in fractions of a second. In astrophotography, the exposures are much longer, requiring that you use the “B” setting on your camera. The actual exposure time is determined by how long you keep the shutter open. More on this in the section on “Celestial Photography.” The Celestial Coordi- nate System A S T R O N O M Y B A S I C S28 Astronomy Basics Astronomy Basics Motion of the Stars30 Astronomy Basics Polar AlignmentEquator DefinitionFinding the Pole 32 Astronomy Basics Latitude ScalesPointingatPolaris 34 Astronomy Basics DeclinationDriftPolar Alignment Finders Aligning the R.A Setting CircleC E L E S T I A L O B S E R V I N G Observing the MoonObserving the PlanetsCelestial Observing Using the Lens Cap Aperture StopObserving the Sun SOLAROBSERVINGHINTSObserving Deep-SkyObjects Using the Setting Circles38 Celestial Observing StarHopping 40 Celestial Observing Seeing Viewing ConditionsTransparency Sky Illumination42 Celestial Observing Celestial Photography C E L E S T I A L P H O T O G R A P H YQuarter Short Exposure Prime FocusLunar Phase CrescentThe exposure times listed here should be used as a starting point. Always make exposures that are longer and shorter than the recommended time. Also, try bracketing your exposures, taking a few photos at each shutter speed. This will ensure that you will get a good photo. If using black and white film, try a yellow filter to reduce the light intensity and to increase contrast 46 Celestial Photography PiggybackEktar 1000 color print Konica 3200 color print 48 Celestial Photography Projection PhotographyT E L E S C O P E M A I N T E N A N C E Care and Cleaning of the OpticsTelescope Maintenance Super Modified Achromatic SMA Eyepieces 50 Optional AccessoriesO P T I O N A L A C C E S S O R I E S Dual Axis Drive System - #93523Optional Accessories Motor Drive System - #93518 52 Optional AccessoriesType THEMESSIERCATALOGNGC# Const54 The Messier Catalog Proper Name Constellation LIST OF BRIGHT STARSEpoch Star NameGeneral Observational Astronomy FOR FURTHER READINGAstronomy Texts AtlasesCELESTRON ONE YEAR WARRANTY Torrance, CA Tel Fax Celestron International 2835 Columbia StreetItem #21017-INST Price $10.00