*Indent item, approx 1.5 weeks for delivery*
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.
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 Celestron’s StarBright XLT optical coatings on every surface, EdgeHD optics gives you maximum light throughput across the widest visual and photographic spectrum.
In addition to EdgeHD’s optimized optical design, the telescope tube has been redesigned to make sure you get the most from your optics each and every night.
|OPTICAL TUBE INFO:|
|Aperture (mm)||203.2 mm (8")|
|Focal Length||2032 mm (80")|
|Focal Length of Eyepiece 1 (mm)||40 mm (1.57")|
|Magnification of Eyepiece 1||51x|
|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||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||3°-65°|
|Tripod Weight||19.2 lbs|
|EQ Head Weight||44 lbs|
|Max Slew Speed||5°/second (4°/second is default)|
|Tracking Rates||Sidereal, Solar and Lunar|
|Number of Auxiliary ports (for hand control and accessories)||2|
|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)|
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