Clestron SKU: 12059 | Helix SKU: CT12059
COMPUTERIZED MOUNT FEATURES
IMPROVED TRIPOD INCLUDES:
Capturing impressive deep-sky astroimages is easier than ever with Celestron’s new Rowe-Ackermann Schmidt Astrograph, the perfect companion to today’s 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 you’ll 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 Celestron’s Schmidt Camera, which allowed astrophotographers to produce images on film in the 1970s.
Today, with CCD sensor sizes as large as film—or larger—the 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 range—or 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 workhorse CGEM mount lineup has been the German Equatorial backbone for telescopes ranging from 6 to 11 inches of aperture. Since that time, many more astro-imagers and planetarium controlled setups have emerged as backyard telescope technology has evolved. Celestron’s engineering team applied their years of experience designing German Equatorial mounts to the all-new CGX EQ, a culmination of all the advancements made to our technologies, value, and ease-of-use.
The new CGX was designed to better support your telescope for both visual and astro-imaging pursuits. Key design goals included a lower profile EQ head, which provides a more compact and therefore more stable setup; a better drive system; remote operation-friendly with home and limit optical sensors; easier polar alignment adjustments; and better cable management. In addition to that, we’ve made mechanical and ergonomic improvements throughout to make the mount sturdier, easier to use, and transport. The CGX is our new Equatorial backbone to support a wide range of telescopes.
|Optical Tube Info:|
|Optical Design||Rowe-Ackermann Schmidt|
|Aperture (mm)||279 mm (11 in)|
|Focal Length||620 mm|
|Backfocus from front lens assembly||72.8 mm|
|Backfocus from included camera adapters||55 mm|
|Central obstruction diameter||114mm|
|Light Gathering Power (Compared to human eye)||1588x|
|Optical Coatings||StarBright XLT|
|Total Telescope Kit Weight||143lbs|
|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 Mount|
|Instrument load capacity||55lbs|
|Tripod height adjustment range||47.25” to 77.5” including EQ headA|
|Tripod leg diameter||2"|
|Latitude adjustment range||3º-65º|
|Tripod Weight||19.2 lbs|
|EQ Head Weight||44 lbs|
|Max Slew Speed||5º/second (4º/second is default)|
|Tracking Rates||Sidereal, Solar and Lunar|
|Number of Auxiliary ports (for hand control and accessories)||2|
|Software||New telescope control PC software|
|CGX Equatorial Head|
|4 x 11 lbs counterweight|
|NexStar+ Hand Control|
|DC Power Cable (plugs into cigarette lighter socket)|