Celestron CGX-L Equatorial 1100 Rowe Ackerman Astrograph
Capturing impressive deep-sky astroimages is easier than ever with Celestrons new Rowe-Ackermann Schmidt Astrograph, the perfect companion to todays top DSLR or astronomical CCD cameras. This fast, wide-field f/2.2 system offers two huge advantages over traditional f/10 astroimaging: better apparent tracking and shorter exposures. That means youll create better-looking astroimages in a fraction of the time, even without the use of an autoguider.
The Rowe-Ackermann Schmidt Astrograph builds on the legacy of Celestrons Schmidt Camera, which allowed astrophotographers to produce images on film in the 1970s.
Today, with CCD sensor sizes as large as filmor largerthe Schmidt Astrograph offers a 43.3mm optimized image circle to capture pinpoint stars on the largest imaging chips. (Note: We previously published 70mm which is actually the aperture of the last lens in the telescope. The optical design has not changed). Combine this large image circle with a focal length of just 620 mm and you have an instrument suitable for wide-field imaging, creating huge mosaics of the night sky, surveying, and even comet hunting.
The Rowe-Ackermann Schmidt Astrograph features newly designed optics with 4-element rare-earth glass for images free of false color and aberrations like coma and field curvature. The optical quality and spot size across the entire image circle is unprecedented for an astrograph in this price rangeor even that of a much more expensive instrument. The design also provides minimal vignetting.
Advanced features like a custom engineered linear brass focuser bearing and FeatherTouch Micro Focus Knob allow you to make the fine adjustments you need to capture the perfect shot. Meanwhile, a12V MagLev fan reduces cooldown time and provides optimal airflow through the dust filtered optical tube. Engineered as a complete astroimaging system, every component of the Rowe-Ackermann Schmidt Astrograph is optimized for peak performance with DSLR and astronomical CCD cameras. Down to the thickness of the glass used in the included fully-multicoated optical window or an optional imaging filter, every component of the system has been taken into careful consideration to work together seamlessly.
Celestron's newly designed CGX-L Computerized Equatorial mount is the latest addition to our fully computerized equatorial mount series. Capable of carrying Celestrons largest optical tubes with ease, CGX-L is designed for backyard observatories and remote imagers looking for exceptional load capacity to weight ratio, compact design, and innovative features that fully support large telescopes, imaging kits, and the latest in wireless tech accessories.
Key design goals included larger 144 mm diameter worm wheels which provide smoother operation and can more accurately drive heavier loads, longer 270 mm dovetail saddle to support larger optical tubes, remote operation friendly features such as home and limit optical sensors, easier polar alignment adjustments, and better cable management overall. In addition to that, weve made mechanical and ergonomic improvements throughout to make the mount sturdier, easier to use, and easier to transport.
Optical Design Rowe-Ackermann Schmidt
Aperture (mm) 279 mm (11 in)
Focal Length 620 mm
Focal Ratio 2.22
Backfocus from front lens assembly 72.8 mm
Backfocus from included camera adapters 55 mm
Central obstruction diameter 114mm
Finderscope Not Included
Light Gathering Power (Compared to human eye) 1588x
Optical Coatings StarBright XLT
Total Telescope Kit Weight 143 lb
Included Items Total Telescope Kit Weight
Resolution (Rayleigh) 0.5 arc seconds
Resolution (Dawes) 0.41 arc seconds
Optical Tube Length 33in
Mount German Equatorial
Instrument load capacity 75 lb
Tripod height adjustment range 35.75 to 52.75
Tripod leg diameter 2.75"
Latitude adjustment range 3º-65º
Tripod Weight 46.2 lb
EQ Head Weight 52.6 lb
Max Slew Speed 4º/second (3º/second is default)
Tracking Rates Sidereal, Solar and Lunar
Number of Auxiliary ports (for hand control and accessories) 4
Autoguide port Yes
USB Port Yes
Software PWI Telescope Control Software
11" RASA Optical tube assembly
CGX-L Equatorial Head
2 x 22 lb Counterweight
NexStar+ Hand Control
DC Power Cable (plugs into cigarette lighter socket)
8 mm Allen Wrench (contained in rear carry handle)