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Celestron is pleased to announce that not one, not two, but FOUR Celestron products have just been named “Hot Products 2010” by Sky and Telescope Magazine in their January issue!

And the winners are: Celestron’s EdgeHD Optical Tube Series, FirstScope, and two of our new German Equatorial mounts, the CGEM and CGE Pro. The winners were selected by Sky and Telescope as noteworthy innovations in the field of Astronomy introduced into the marketplace during the past year.

In addition to being deemed a Hot Product, our EdgeHD has also been named International CES Innovations Design and Engineering Award Honoree 2010 in the personal electronics category! This prestigious award is sponsored by the Consumer Electronics Association and the producers of the International CES show, the largest consumer technology tradeshow.

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.

EdgeHD Optics

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 (coming soon) 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.

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Bahtinov Focus Mask for telescopes with dew shield O.D. from 5.5" to 8.5" diameterBahtinov Focus Mask for telescopes with dew shield O.D. from 5.5" to 8.5" diameter
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Skyris 5-Position 1.25" Filter WheelSkyris 5-Position 1.25" Filter Wheel
FARPOINT 90mm scope rings, set of two.FARPOINT 90mm scope rings, set of two.
FARPOINT 125mm scope rings, set of twoFARPOINT 125mm scope rings, set of two
NexImage® 5 Solar System Imager (5MP)NexImage® 5 Solar System Imager (5MP)
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CGE Pro 925CGE Pro 925
CGE Pro 1100CGE Pro 1100
CGE PRO 1100 HD NEWCGE PRO 1100 HD NEW
CGE Pro 1400CGE Pro 1400
CGE Pro 1400 FASTARCGE Pro 1400 FASTAR
CGE PRO 1400 HD NEWCGE PRO 1400 HD NEW

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.

Above: A curved focal plane does not perfectly coincide with a flat CCD chip and therefore will appear out of focus at the edges.

Even when focused sharply in the center of the field of view, a curved focal plane will produce out of focus stars at the edges. The wider the field of view the more pronounced the defect becomes. Compare the two images below. Both images were taken with the same camera under the same conditions. When focused on-axis both appear to be sharp in the center of the image. But as you view the stars closer and closer to the edge, the stars in the first image (taken with a competing coma-free design) become larger and less focused until finally, at the very corners, the star images are de-focused so much that they appear as rings instead of pinpoints.

Competing Coma Free Optical Design

Celestron EdgeHD Optics

Fig 1 - Competing Coma Free design focused on axis, shows sharp stars in the center of the image, but dramatically out of focus stars (donuts) at the edges.
Fig 2 - EdgeHD focused on axis, focuses sharply across the entire FOV.
Both M3 images taken with a 35 mm chip (42 mm diameter focal plane) camera

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.

Celestron's High Definition optics let you resolve smaller spot sizes all the way to outer edge, revealing finer detail and greater contrast.

Fig 1 - Off-axis Coma inherent in many optical design, (such as SCT's shown above) distort star images and compromise resolution.
Fig 2 - EdgeHD focus sharply across the entire FOV revealing fine detail lost with other systems.
Both images cropped down and taken with a 37 mm chip (52 mm diameter focal plane).

Brighter Images

EdgeHD optics give you smaller (more concentrated) stars that create brighter images and allow you to see down to a fainter magnitude than other equally sized telescopes. Poor edge quality can spread out starlight so much that the brightness of a star appears the same as the sky background, making it undetectable to your eye (or camera). With EdgeHD optics you will be able to capture the faintest of galaxies all the way to the corner of your full frame camera chip.

Fig 1 - Faint starlight can go unnoticed at the edge of field of telescopes that exhibit off-axis coma.
Fig 2 - EdgeHD optics can resolve faint detail missed in telescopes of equal aperture.
Both images cropped down and taken with a 37 mm chip (52 mm diameter focal plane).
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Celestron 80LCM Computerized TelescopeCelestron 80LCM Computerized Telescope
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