Celestron EdgeHD C11 XLT Optical Tube Assembly w. CGE/M Dovetail bar
Product.Nr.:
BP#822215X
Manufacturer: Celestron
4.749,00 EUR
incl. 19 % VAT
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product description
- EdgeHD C11
- 280/2800mm (f/10)
- Optical Tube Assembly (OTA)
- Dovetail Compatibility: Losmandy Standard
See The Universe In HD
- Introducing Celestron's New Aplanatic Schmidt Telescope Design!
- Visibly Sharper Images
- Superior Performance
- Enhanced Mechanical Features
- Fastar® Compatible
EdgeHD is an aplanatic Schmidt telescope designed to produce 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, but also to give 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 "astrograph" quality actually only produce pinpoint stars across a curved focal plane. While this may be acceptable for visual observing, stars will appear out of focus at the edge when used with a 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 other competing coma-free designs. This guarantees you visibly sharp stars across some of the largest CCD chips available today.
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. Starbright XLT® Coatings coupled with Celestron's StarBright XLT coating group on every surface, EdgeHD optics gives you maximum light throughput across the widest visual and photographic spectrum.
Mechanical Features
In addition to Celestron’s new optimized optical design, the EdgeHD tube has been redesigned to make sure you get the most from your optics each and every night.
Mirror Clutches - Flexible tension clutches hold the mirror in place and reduce image shift when rotating the tube around the mount. 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 chip).
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 60 micron micro-mesh filter guaranteed to let warm air out without letting dust in.
Fastar Versatility - The EdgeHD is the most versatile imaging scope available today. At its native f/10 you can achieve the image scale necessary to capture the smallest of deep sky objects. With the optional reducer lens you can increase your field of view without sacrificing optical performance. A barlow gives you the added power for high resolution planetary, lunar and solar imaging. And of course all EdgeHD optical tubes are Fastar® compatible for ultra fast f/2 wide field imaging. Each tube has been fitted with a removable secondary mirror and are opto-mechanically aligned on a laser bench to ensure they are axially symmetric in any configuration.
StarBright™ XLT Coatings
StarBright XLT is a revolutionary optical coating system which outperforms coatings used on competing catadioptric telescopes. All of Celestron’s Schmidt-Cassegrain and EdgeHD telescopes utilize this custom-engineered coating technology. The StarBright XLT coating system comprises of high-transmission coatings for every lens surface, and high-reflectivity coatings for every mirror surface. This ensures maximum light throughput for the telescope, which yields brightest images.
Specifications
| Optical Design | Schmidt-Cassegrain EdgeHD |
| Aperture | 280mm (11 in) |
| Focal Length | 2800mm (110.24 in) |
| Focal Ratio | 10 |
| Eyepiece | 23mm (0.91 in) |
| Magnification | 122x |
| Finderscope | 9x50mm |
| Star Diagonal | 2" with 1.25" Adapter |
| Optical Tube | Aluminum |
| FASTAR Compatible | Yes |
| Highest Useful Magnification | ca. 661x |
| Lowest Useful Magnification | 40x |
| Limiting Stellar Magnitude | 14.7 |
| Resolution (Rayleigh) | 0.5 arcsec |
| Resolution (Dawes) | 0.41 arcsec |
| Light Gathering Power | 1600x |
| Secondary Mirror Obstruction | 3.75 in (95.25 mm) |
| Secondary Mirror Obstruction By Diameter | 34.1% |
| Secondary Mirror Obstruction By Area | 11.6% |
| Optical Coatings | StarBright XLT |
| Optical Tube Length | 24 in (609,6mm) |
| Optical Tube Weight | 28 lb (12.7kg) |
| Dovetail Compatibility | CGE/M Mount / Orange |
Scope of Delivery
- Celestron EdgeHD 11" Schmidt-Cassegrain Optical Tube Assembly
- Aluminum Optical Tube
- Celestron's premium StarBright XLT coatings
- 2800 mm focal length (f/10)
- 23 mm eyepiece included (122x)
- Visual back allows for use with 1.25" accessories
- 9x50 finderscope
- Star diagonal
- Includes dovetail rail compatible with CGE/M mount
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- OTA and...
129,00 EUR
incl. 19 % VAT excl. shipping costs
Nicht auf Lager
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