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User Manual for Celestron C8-A-XLT CG-5 8" f 10 Schmidt-Cassegrain Telescope Click to enlarge the picture
Contents of the user manual for the Celestron C8-A-XLT CG-5 8" f 10
- Product category: Catadioptrics (Cassegrains) Celestron
- Brand: Celestron
- Description and content of package
- Technical information and basic settings
- Frequently asked questions – FAQ
- Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
- Authorized service for Celestron Catadioptrics (Cassegrains)
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User manual for the Celestron C8-A-XLT CG-5 8" f 10 contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any Celestron product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official Celestron user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a Celestron product will considerably shorten its lifespan!
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Product description Striking a comfortable balance between power and portability, the Celestron C8-A-XLT CG-5 8" f/10 Schmidt-Cassegrain Telescope is an ideal choice for observing objects within or beyond our solar system. It features a Schmidt-Cassegrain optical system consisting of a corrector plate, a spherical primary mirror, and a secondary mirror that work together to reduce spherical and chromatic aberrations. These corrections result in crisp and clear high-resolution images with accurate color representation, without distortion—especially at the edges. Complementing the optical system is the proprietary StarBright XLT optical coating system, which improves light transmission and reflectivity across the entire visual spectrum.The optical tube is outfitted with a standard 1.25" visual back to make it easier to find eyepieces, accessories, and imaging gear. For visual observations, a 1.25" star diagonal is included along with a 25mm eyepiece that yields 81x magnification. The C8-A-XLT is offered here without a mount or tripod for users who already have a reliable support system and are looking to upgrade or add to their existing gear, but comes with a standard-sized CG-5 dovetail plate that is compatible with Vixen-style saddles. - Optical Tube
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- 8" (203mm) aperture
- f/10 focal ratio
- 2032mm effective focal length
- Schmidt-Cassegrain catadioptric optical design
- StarBright XLT optical coatings
- Resolution: 0.69 arcsec (Rayleigh); 0.57 arcsec (Dawes)
- Secondary mirror obstruction: 2.5" (69mm); 31% by diameter; 9.77% by area
- StarBright XLT System
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- Maximizes light transmission through optical path
- Improves color rendition, contrast, sharpness, resolution, and brightness
- Broadband system provides flat wavelength transmission across the entire visual spectrum
- Multi-layer mirror coatings with layers of aluminum, SiO2 (quartz), and TiO2 (titanium dioxide)
- Multi-layer anti-reflective corrector plate coatings with layers of MgF2 (magnesium fluoride) and HfO2 (hafnium dioxide); hafnium has a wider band-pass than the commonly used titanium
- High-transmission water white glass corrector plate limits light loss due to internal absorption
- Mounting
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- optical tube assembly (OTA) only; mount and tripod required for proper use
- CG-5 (Vixen-style) dovetail plate for compatible saddles
- OTA weight: 12.5 pounds
- Included Accessories
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- Visual back:
- Standard Schmidt-Cassegrain telescope threads
- 1.25" eyepiece/accessory holder
- Use for prime focus or projection astrophotography with optional adapters
- Eyepiece:
- 1.25"-diameter barrel
- Accepts most 1.25" eyepiece filters
- 25mm focal length yields 81x power
- Diagonal:
- 90° angle puts head in comfortable viewing position
- Threaded for direct connection to OTA without the need for the visual back
- 1.25" snout and eyepiece/accessory holder
- Star diagonal corrects image horizontally, but not vertically
- Finderscope:
- Low 6x magnification preserves wide field of view to more easily find alignment or guide stars
- 30mm aperture helps to see dimmer objects and stars for easier alignment and star-hopping navigation
UPC: 050234102094 In the Box Celestron C8-A-XLT CG-5 8" f/10 Schmidt-Cassegrain Telescope (OTA Only) 6x30 Finderscope 1.25" 90° Star Diagonal 1.25" 25mm Plössl Eyepiece Limited 2-Year Warranty Table of Contents
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Technical parametersCelestron C8-A-XLT Specs | Optical Design | Schmidt-Cassegrain | | Aperture | 8.0" / 203.2mm | | Focal Length | 2032mm | | Focal Ratio | f/10 | | Eyepiece Barrel Diameter | 1.25" | | Diagonal | 90° star
1.25" snout and eyepiece holder | | Finderscope | 6x30 mm | | Tripod | None | | Mount Type | CG-5 dovetail plate
Compatible with Vixen-style saddles | | Power Source | None | | Optical Tube Length | 17.0" / 43.2 cm | | Weight | 12.5 lb / 5.7 kg | | | | Package Weight | 19.8 lb | | Box Dimensions (LxWxH) | 22.9 x 15.3 x 13.3" |
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