Celestron 11" RASA Schmidt Astrograph - CGEM DX Package

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Celestron 11" RASA Schmidt Astrograph - CGEM DX Package

Regular Price: $4,999.00

Special Price $3,874.00

Item # CE-11006
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  • The 11" Rowe-Ackermann Schmidt Astrography by Celestron was built for speed! An ultra fast optical design features a focal ratio of just f/2.22.
  • Rare-earth glass provides images with perfect color, free from coma and field curvature.
  • 70mm image circle optimized to keep tack sharp stars to the edges of even the largest imaging sensors.
  • Linear brass focuser bearing minimizes image shift. Dual speed 10:1 FeatherTouch micro focus knob allows for ultra precise focusing.
  • A 12V MagLev fan is super quiet. This high-output fan shortens cool down time and blocks dust from the interior of your optical tube.
  • Includes a M48 and T-thread adapter for quick, easy attachment to popular CCD and DSLR cameras.
  • Paired with the Celestron CGEM DX equatorial mount which has a weight capacity of 50 lbs, ultra-sturdy 2.75" steel tripod and a database of over 40,000 objects!
Description

Details

The Rowe-Ackermann Schmidt Astrograph Design

The Rowe-Ackermann design pairs speed with performance.  Based on the original Schmidt camera design, the RASA optical tube offers major advantages to astro-photographers by giving you a short focal length for relatively a large aperture.  The result is a wide-field f/2.2 system offering the advantage of better apparent tracking.  With only a 620mm focal length, exposure times are also greatly reduced when compared to traditional Schmidt Cassegrain telescopes.   You'll be capturing better images in a fraction the time, without the need of an autoguider!

As CCD imaging has advanced, large sensors have become readily available in increasingly more affordable cameras.  While the imaging hobby has grown in leaps and bounds there has been very little changed in optical designs to accommodate these large imaging sensors.  That is until now.  The Celestron RASA offers an exceptionally sharp 70mm image circle.  This creates such a wide field, you'll be able to fill even the largest imaging chips with edge to edge pin point stars with minimal vignetting. The Rowe-Ackermann scopes are perfect for creating giant night sky mosaics, surveying and comet hunting.  Designed with 4-element rare-earth glass, images are free of false color, coma and field curvature.  Optical quality this excellent has been unheard of in astrographs within this price range.

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.

Includes M48 and T-Thread camera adapters.

Celestron CGEM DX Mount and Tripod

The CGEM DX™ mount is the newest member of our fully computerized Equatorial mount series capable of carrying Celestron’s high-end 11" and 14" optical tubes. The CGE PRO style, 2.75" leg tripod holds even the our 14" optics securely while dampening vibration, which is ideal for both imaging and visual observing. Capable of holding 50 lbs of payload and slewing at 5° per second, you will be able to instantly point to any of the celestial objects in the database.

Ergonomic Design - CGEM DX was designed to be ergonomically friendly with large Altitude and Azimuth adjustment knobs for quick and easy polar alignment adjustment. The internal RA and DEC motor wiring provides a clean look and an easy and trouble free set up.

Innovation - The CGEM DX series has a new innovative Polar alignment procedure called All-Star™. All-Star allows users to choose any bright star, while the software calculates and assists with polar alignment. Another great feature of the CGEM DX sure to please astroimagers, is the Permanent Periodic Error Correction (PEC) which will allow users to train out the worm gears periodic errors, while the mount retains the PEC recordings.

Performance - For objects near the Meridian (imaginary line passing from North to South), the CGEM DX will track well past the Meridian for uninterrupted imaging through the most ideal part of the sky. The CGEM mount has a robust database with over 40,000 objects, 100 user defined programmable objects and enhanced information on over 200 objects.

Power Management - Redesigned electronics deliver constant regulated power to the motors making them capable of driving the telescope even when not perfectly balanced. This allows the CGEM DX to have the payload capacity of that of much larger mounts without sacrificing smooth tracking motion and pointing accuracy across the entire sky.

Celestron CGEM DX Mount and Tripod Features

  • Holds a maximum instrument capacity of 50 lbs
  • CGEM DX Computerized Equatorial Mount
  • Ultra sturdy 2.75" steel tripod with Accessory Tray
  • 40,000 object database with over 100 user-definable objects and expanded information on over 200 objects
  • Proven NexStar computer control technology
  • Flash upgradeable hand control software and motor control units for downloading product updates over the Internet
  • New "All-star" Polar alignment uses any bright star for a quick and accurate Polar alignment
  • Software Features include: Mount Calibration, Database Filter Limits, Hibernate, five Alignment Procedures, and user-defined slew limits
  • Custom database lists of all the most famous deep-sky objects by name and catalog number; the most beautiful double, triple and quadruple stars; variable stars; solar system objects and asterisms
  • Permanent Programmable Periodic Error Correction (PEC) - corrects for periodic tracking errors inherent to all worm drives
  • Steel worm gear and 90 mm pitch diameter brass worm wheel
  • Drive Motors - Low Cog DC Servo motor with integrated optical encoders offer smooth, quiet operation and long life.
  • The motor armatures are skewed to minimize cogging which is required for low speed tracking.
  • Internal Cable wiring for trouble-free setup and transportation
  • Designated six-pin RJ-12 modular jack, ST-4 compatible guide port
  • Autoguide port and Auxiliary ports located on the electronic plate for long exposure astrophotography
  • Double line, 16-character Liquid Crystal Display Hand Control with backlit LED buttons for easy operation of go to features
  • RS-232 communication port on hand control to control the telescope via a personal computer
  • Includes NexRemote telescope control software, for advanced control of your telescope via computer
  • Precision machined 40 mm diameter steel Polar shafts supported by multiple tapered roller bearings and ball bearings
  • GPS-compatible with optional SkySync GPS Accessory

This RASA CGEM DX telescope package includes a 2 year Celestron warranty.

Additional Information

Additional Information

SKU CE-11006
UPC Code 050234110068
Manufacturer Celestron
Telescope Series Celestron RASA Astrographs
Optical Design Astrograph
Mount Type Equatorial - Motorized w/GoTo Option
Warranty 2 Year Warranty
Telescope Aperture 11 in.
Telescope Focal Ratio f/2.22
Telescope Focal Length 620mm
Optical Coatings Celestron XLT
Tube Color or Finish Celestron Grey
Length of Optical Tube 33 in.
Optical Tube Weight 35 lbs.
Mount Weight 45 lbs. Head / 41 lbs. Tripod
Focuser Size 2"
Focuser Style Feather Touch
Manual or Electronic Focusing? Manual
Focusing Speeds Two-Speed
Dew Shield Included? No, Sold Separately
Diagonal Included? No - Sold Separately
Finder Included None
Eyepiece(s) Included None
Hand Controller Included? Yes
Power Adapter Included None - Does Not Require Power
CD ROMs Included None
Counterweights Included (1) 22 lb.
Alignment Procedure EQ North Align, EQ South Align
Tracking Modes EQ North, EQ South
Objects in Database 40,000 +
OTA Mount Type Losmandy-Style Dovetail
Tripod Type Included None, Sold Separately
Total Telescope Weight 122 lbs.
Reviews
Included Items

Included Items

  • 11" RASA Optical Tube
  • M48 Camera Adapter
  • T-Thread Camera Adapter
  • CGEM-DX Mount
  • 1 22 lb. counterweight
  • Tripod
Questions & Answers

Product Questions

Would this scope design be decent for visual use as well?
4
Two quick questions: 1. What are the spot sizes on axis, 10mm off-axis, 15mm off-axis, 20mm off-axis, ....to 35mm of-axis? 2. What is the maximum load (weight of camera etthat can be placed at the image plane before the corrector's figure is compromised?
3
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