About this product
Features:
- 8 HD optics
- CGX computerized equatorial mount
- Celestrons premium StarBright XLT coatings provide maximum light transmission
- A 9x50 finderscope, 1.25 mirror diagonal for more comfortable viewing, and 1.25 40 mm PlÇôssl eyepiece are all included
- Celestrons premium StarBright XLT coatings provide maximum light transmission
*Indent item, approx 1.5 weeks for delivery*
CGX 800 HD combines Celestron's all-new state of the art CGX computerized equatorial mount with its acclaimed EdgeHD optical system. With 8 inches of aperture and our premium StarBright XLT coatings, the CGX 800 HD gives you over 800 times the light gathering power than the unaided eye and is the lightest and most portable telescope in its class.
See the Universe in HD
EdgeHD is an aplanatic, flat field Schmidt-Cassegrain telescope that produces aberration-free images across a wide visual and photographic field of view. The optical system was designed to reduce more than just off-axis star coma; it also provides an astrograph-quality flat focal plane all the way to the edge of the field of view.
True Astrograph Quality
Many optical designs that advertise themselves as "astrographs" actually only produce pinpoint stars across a curved focal plane. While this may be acceptable for some visual observing, stars will appear out of focus at the edge when used with the flat chip sensor of a digital camera. EdgeHD optics produce a focal plane more than three-times flatter than a standard Schmidt-Cassegrain telescope and dramatically flatter than competing coma-free designs. This guarantees you visibly sharp stars across some of the largest CCD chips available today.Learn more about EdgeHD technology.
Improved Performance
Superior edge performance not only creates rounder, more pleasing stars, but actually improves the resolution and limiting magnitude when compared to telescopes of equal aperture. With Celestrons StarBright XLT optical coatings on every surface, EdgeHD optics gives you maximum light throughput across the widest visual and photographic spectrum.
Mechanical Features
In addition to EdgeHDs optimized optical design, the telescope tube has been redesigned to make sure you get the most from your optics each and every night.
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Mirror clutches- Flexible tension clutches hold the mirror in place and reduce image shift when taking long exposure astro-images. Once focused, the flexible rods allow the mirror to be held in place without putting any force or pressure on the mirror assembly, keeping the image centered in the eyepiece (or on the sensor).
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Tube vents- Cooling vents located on the rear cell allow hot air to be released from behind the primary mirror. Each vent has an integrated 95-micron micromesh filter guaranteed to let warm air out without letting dust in.
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Fastar versatility- EdgeHD is the most versatile imaging telescope available today. At its native f/10, you can achieve the image scale necessary to capture the smallest of deep sky objects. Add the optional reducer lenscustom-designed for your size EdgeHD tubeand you can increase your field of view without sacrificing optical performance. A Barlow gives you added power for high-resolution planetary, lunar and solar imaging. All EdgeHD optical tubes are Fastar-compatible, allowing the secondary mirror to be removed and replaced with a third party lens accessory for ultra-fast f/2 wide field imaging.
Specifications:
OPTICAL TUBE INFO: |
|
Optical Design |
EdgeHD |
Aperture (mm) |
203.2 mm (8") |
Focal Length |
2032 mm (80") |
Focal Ratio |
10 |
Focal Length of Eyepiece 1 (mm) |
40 mm (1.57") |
Magnification of Eyepiece 1 |
51x |
Finderscope |
9x50 |
Star Diagonal |
1.25 |
Optical Tube |
Aluminum |
Highest Useful Magnification |
480x |
Lowest Useful Magnification |
29x |
Limiting Stellar Magnitude |
14 |
Resolution (Rayleigh) |
0.69 arc seconds |
Resolution (Dawes) |
0.57 arc seconds |
Light Gathering Power (Compared to human eye) |
843x |
Secondary Mirror Obstruction |
69 mm (2.7") |
Secondary Mirror Obstruction by Diameter |
34% |
Secondary Mirror Obstruction by Area |
11% |
Optical Coatings |
StarBright XLT |
Optical Tube Length |
432 mm (17") |
Optical Tube Weight |
14 lbs (6.3 kg) |
Dovetail Compatibility |
CGE Mount |
MOUNT INFO: |
|
Mount |
German Equatorial Mount |
Instrument load capacity |
55 lbs |
Tripod height adjustment range |
47.25" to 77.5" including EQ headA |
Tripod leg diameter |
2" |
Latitude adjustment range |
3ø-65ø |
Tripod Weight |
19.2 lbs |
EQ Head Weight |
44 lbs |
Max Slew Speed |
5ø/second (4ø/second is default) |
Tracking Rates |
Sidereal, Solar and Lunar |
Number of Auxiliary ports (for hand control and accessories) |
2 |
Autoguide Port |
Yes |
USB Port |
Yes |
Alignment Procedures |
SkyAlign, 3-Star Align, Solar System Align |
Software |
New telescope control PC software |
Included Items |
CGX Equatorial Head|CGX Tripod|Accessory Tray|2 x 11 lbs counterweight|NexStar+ Hand Control|DC Power Cable (plugs into cigarette lighter socket) |