Orion Atlas 11 EQ Schmidt-Cassegrain Telescope

The Orion Atlas 11 EQ Schmidt-Cassegrain Telescope  observational and astro-imaging system combines giant 11" Schmidt-Cassegrain optics with the beefiest GoTo mount in its price class. It’s a “do-it-all” instrument that can take you places no other comparably priced telescope can go — quickly, accurately, and easily.

The superb 11" optics are made in the U.S.A. by Celestron and feature StarBright XLT high-performance coatings for enhanced light transmission. The optics are housed in an aluminum tube that’s decked out with a 9x50 dovetail finder scope, 1.25" diagonal, 26mm (107x) Sirius Plössl eyepiece, and dovetail mounting bar for attachment to the Atlas equatorial head.

Searching for objects is a thing of the past with the Atlas EQ-G GoTo mount. It offers computerized pointing to any of 13,436 celestial objects in the hand controller’s database. Dual-axis DC stepper motors slew at speeds of 2x to 800x sidereal (up to 3.4° per second) and track at sidereal, lunar and solar rates. Backlash compensation in both axes and periodic error correction (PEC) provide the responsiveness for guiding and the tracking acccuracy needed for astrophotography. The drive base is equipped with a CCD autoguider port and input for 12-volt DC power.

Also included are an RS-232 cable, two 11-lb. counterweights, hand controller mounting bracket, and an illuminated polar-axis finder scope. Optical tube weighs 27.5 lbs., mount 54 lbs., not including counterweights (11-lb. x 3). One-year limited warranty.

These three components of StarBright XLT coatings result in one of the finest coatings available. The peak transmission for the systems is 89% at 520 nm. The overall system transmission is 83.5% averaged over the spectrum from 400 to 750 nm

Buy it online at Amazon.com

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