Celestron 11065, 91525, 11055 instruction manual Optional Accessories

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prism arrangement that, in addition to producing correctly oriented images, allows you to look into the telescope at a 45° angle, a desirable arrangement for terrestrial viewing.

Eyepiece Filters - To enhance your visual observations of planetary objects, Celestron offers a wide range of colored filters that thread into the 1-1/4" oculars. Available are: #12 Deep Yellow, #21 Orange, #25 Red, #58 Green, #80A Light Blue, #96 Neutral Density (25% T, and 13% T) and Polarizing filters. These and other filters are also sold in sets.

Eyepieces - Like telescopes, eyepieces come in a variety of designs. And, with the advent of different eyepieces, Celestron also has a variety of designs each with its own advantages and disadvantages. For the 1-1 /4" barrel diameter there are four different eyepiece designs available.

•SMA - The SMA design is an improved version of the Kellner eyepiece. SMA’s are very good, economical, general purpose eyepieces. Available in focal lengths of 6mm, 10mm, 12mm, and 25mm.

•Plossl - Plossl eyepieces have a 4-element lens designed for low-to-high power observing. The Plossls offer razor sharp views across the entire field, even at the edges! In the 1-1 /4" barrel diameter, they are available in the following focal lengths: 6.3mm, 7.5mm, 10mm, 12.5mm, 17mm, 20mm, 26mm, 32mm, and 40mm.

•Ultima - Ultima is not really a design, but a trade name for our 5-element, wide field eyepieces. In the 1-1/4" barrel diameter, they are available in the following focal lengths: 5mm, 7.5mm, 12.5mm, 18mm, 24mm, 30mm, 35mm, and 42mm. These eyepieces are all parfocal. The 35mm Ultima gives the widest possible field of view with a 1-1 /4" diagonal and is ideal for use with the Reducer/Corrector.

•Lanthanum Eyepieces (LV Series) - Lanthanum is a unique rare earth glass used in one of the field lenses of this new eyepiece. The Lanthanum glass reduces aberrations to a minimum. All are fully multicoated and have an astounding 20mm of eye relief— perfect for eyeglass wearers! In the 1-1/4" barrel diameter, they are available in the following focal lengths: 2.5mm, 4mm, 5mm, 6mm, 9mm, 10mm, 12mm, 15mm, 20mm and 25mm. Also available is an LV Zoom Eyepiece with the focal length range of 8 to 24 mm.

In addition to the previously mentioned, there is also a deluxe compact zoom ocular (#93306) that has a variable focal length of 6.5 to 18mm.

Finderscopes - Finderscopes are used to help you locate objects in the main telescope. The larger the finderscope, the more you will see, making it easier to locate objects. One option for finders is the illuminated Polaris 7x50 Finder (#93785-8P).It comes with the bracket, finderscope, and illuminator. There is also a Quick Release Finder bracket (#51149-A)which allows you to easily remove and replace the finderscope without losing alignment. The Quick Release Bracket is only available for the 9x50 and 7x50 Finderscopes.

Another tool for finding objects in the sky is the Star Pointer (#51630). The Star Pointer is different from a finderscope in that you can use both eyes when pointing the telescope at an object. A partially reflective surface projects the image of an LED illuminated pinpoint into the line of sight. Just align the illuminated pinpoint with the object you are interested in and the object will be

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Contents Page E C e l e s t r o n C M- 11 00/1400 B L E O F C O N T E N T S Iv Table of Contents T R O D U C T I O N How to Use This Manual Word of Caution Schmidt-Cassegrain Optical System Unpacking Your Celestron CM-1100 S E M B L I N G Y O U R C M 1 1 0CM-1100 Setting Up the Tripod Central Column Electronics Console Center Leg Brace Attaching the Center Leg Brace Attaching the Central ColumnAttaching the Equatorial Mount Installing Counterweight Installing Counterweight BarAttaching the Optical Tube to the Mount Attaching the Visual Back Installing the Star Diagonal Assembling Your CM-1100 Installing the Finder Installing the Polar Finder Moving the Telescope in R.A. and DEC Adjusting the Mount Balancing the Mount in R.A Balancing the Mount in DEC Assembling Your CM-1100 Technical Specifications Tripod Image Orientation L E S C O P E B a S I C SFocusing General Photography Hints Aligning the Finder Daytime Observing Your First LookNighttime Observing Calculating Magnification Determining Field of View Celestial Coordinate 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 Polar Axis Finder Declination Drift Aligning the R.A. Setting Circle Setting the DEC Circle I N G T H E D R I V E Powering Up the DriveGuide Speed BC Backlash Correction Periodic Error Correc- tionHC/CCD Hand Controller Northern/Southern Hemisphere OperationAutoguiding DEC ReverseObserving the Moon L E S T I a L O B S E R V I N GObserving the Sun Observing Deep-Sky Objects Using Your Setting CirclesStar Hopping Celestial Observing Seeing Conditions Viewing ConditionsTransparency Sky IlluminationCelestial Observing L E S T I a L P H O T O G R a P H Y Full Lunar Phase ISO Crescent QuarterShort Exposure Prime Focus Celestial Photography Piggyback Celestial Photography Eyepiece Projection Planet ISO Moon Mercury Venus Mars Jupiter Saturn Long Exposure Prime Focus Celestial Photography CCD Imaging Description of F-numbers Fastar ConfigurationLunar or small planetary nebulae Imaging at f/7 Imaging at f/11Medium size to small galaxies Planetary or Lunar Imaging at f/22L E S C O P E M a I N T E N a N C E Care and Cleaning of the Optics CollimationTelescope Maintenance Telescope Maintenance T I O N a L a C C E S S O R I E S Optional Accessories Optional Accessories Optional Accessories Mag Type Proper Name ConstNGC# Spiral Galaxy Magnitude Epoch Star Name ConstellationVisual Observation Astronomy TextsAtlases General Observational AstronomyCelestron ONE Year Warranty
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