CELESTRON • EdgeHD 14" Optical Tube Assembly (OTA) • 91060-XLT
This 14" 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. The EdgeHD optics consist of a zero power corrector plate, a spherical primary mirror, and a secondary mirror along with a set of field flattening lenses which reside in the baffle tube. The optics of an EdgeHD telescope feature StarBright XLT multi-layer coatings on the primary and secondary mirrors for increased reflectivity. The corrector is also multi-layer coated to ensure enhanced anti-reflection characteristics.
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.
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 Multi-Layer 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. Normal image orientation for the EdgeHD design is upside-down and reversed. The 2.0" diagonal inverts this image so it is right-side-up, but reversed. This diagonal directly accepts 2.0" eyepieces, and a 1.25" eyepiece adapter is included.
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).
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.
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 lens—custom-designed for your size EdgeHD tube—and 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.
Every EdgeHD that ships has been tested not only for the surface quality of each optical component, but also with a camera and artificial star to ensure the imaging system meets Celestron's rigid performance quality. This “final acceptance test” confirms the EdgeHD will perform in the field and deliver high-quality astroimages.
- A step up from traditional Schmidt-Cassegrains
- EdgeHD creates pinpoint stars throughout the entire field of view
- 2580x light gathering power compared to the naked eye
- Normal focal ratio of f/11
- Fastar focal ratio of f/2
- StarBright XLT coatings for improved light transmission
- Includes a 23mm 82° 6 element Axiom LX eyepiece
- Also Includes a Wide Field 9x50 Finderscope
- Plus a 90° Diagonal w/ StarBright XLT coatings
|Name||Celestron - EdgeHD 1400 14" Optical Tube Assembly|
|Custom Stock Status||Ships in 3-5 Days|
|Aperture||355.6 mm (14 in)|
|Dovetail Compatibility||CGE Mount|
|Eyepiece 1||23 mm (0.91 in)|
|Focal Length||3910 mm (153.94 in)|
|Optical Tube Length||31 in (787.4 mm)|
|Optical Tube Weight||46 lbs (20.87 kg)|
|Secondary Mirror Obstruction||4.5 in (114.3 mm)|
|Secondary Mirror Obstruction by Area||10.3 %|
|Secondary Mirror Obstruction by Diameter||32.1 %|
|Star Diagonal||2" w/1.25" adapter|