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C11CGEM Celestron CGEM 1100-280 / 2800mm C11 SC GoTo Telescope

(CGEM - 1100 Computerized Telescope - 11099)

Celestron C11 on Mount CGEM
Figure: Celestron C11 on the CGEM


... the powerful C11 optics from Celestron on the massive and expandable Goto mount CGEM - that's an all-rounder at a nearly unbeatable price !!

Each C - 11 has a hand retouched and clean finished look. The result is a high imaging quality, which is required especially in the observation of the moon and planets. In general, the resolution is limited only by the atmosphere (Seeing).

With a length of only about 60cm and a weight of about 12kg, the C11 is still quite portable and is still supported by relatively compact mounts.

280mm opening gives you spectacular views of galaxies, nebulae and star clusters. Bright objects are already showing their first colors, and in many gas nebulae the sight already reminds of good astrophotographies.

The CGEM carries the C11 with good stability for observation as well as astrophotography. The combination is still really transportable.



Information about the Celestron CGEM - parallactic mount with computer control - up to 20kg instrument weight


... massive GoTo mount for devices up to 11 "aperture - well suited for astrophotography.

Celestron CGEM Parallactic Mount GoTo

The CGEM mount from Celestron offers, in addition to an attractive design, also good inner values. The mount closes the gap between the proven Advanced GoTo mount (CAM) and the massive CGE. The CGEM can be loaded with equipment, up to about 20kg dead weight, depending on the application and lever.

Built-in tracking with automatic object positioning ... The CGEM comes with a complete GoTo control with approximately 40,000 stored objects and a clean working tracking.

Especially massive pole height ... Large knurled screws in azimuth and height allow easy adjustment of the mount, even at full load. The pole height is particularly solid and gives the mount a higher stability.

Innovative arrangement for astrophotography ... The CGEM has a particularly effective one-nosing procedure (All Star - patent pending). For a precise arrangement it is sufficient, after the calibration of the computer, simply to approach a bright star. The software then calculates the deviation from the optimal arrangement and then tells how far the mount in the azimuth and in the pole height still needs to be corrected. A Polsucher is no longer necessary.

Permanent electronic correction of the screw error ... Also very important for astrophotography - the permanent correction of the periodic error. The mount remembers the correction. The tracking becomes more accurate. Thus, the mount is particularly well suited for astrophotography.

The mount goes beyond the meridian ... Especially handy when taking long-exposure astro-shots and the object passes the meridian. The exposure can be continued. The mechanics of the mount allows a tracking far beyond the meridian passage, without swinging.

Stable 3 "prism clamp ... The CGEM already has the same massive 3" prism clamp as the Celestron CGE or Losmandy mounts. The 3 "clamp allows the use of sturdy, large prism rails, resulting in less vibration and more rigidity in the overall system.

Solid stainless steel tripod ... The height-adjustable stainless steel tripod is extendable to 140cm height. The stability is fully maintained. The wide adjustment range always brings the mount to the correct working height, depending on the instrument type.


The computer control:

- Database of over 40,000 objects - 400 user-defined objects - over 200 objects with extended information
- proven NexStar technology
- Upgradeable software over the Internet
- New innovative All-star Polar Alignment - perfect placement in minutes
- Five alignment possibilities - from the simple 1-star calibration to the highly accurate calibration with any number of stars
- Permanent programmable error correction of the periodic error of the RA screw
- Worm wheel (90mm diameter) made of brass - screw made of steel
- Servo motors with quiet operating noise
- Internal cables - only one connection to the controller
- Autoguiderport - ST4 compatible / RS 232 port
- Includes NexRemote software - for controlling the mount via the computer
- GPS compatible


Technical data of the optics:

- Opening ... 279mm
- Focal length ... 2800mm
- aperture ratio ... f / 10
- Schmidt Cassegrain optics with XLT coating
- Max. meaningful magnification ... about 600fach
- limit size visually ... 14.7mag
- Resolution ... 0.42 "
- Shading by the secondary mirror ... 34%
- Length of the tube ... 60cm
- Weight about 12kg



The mount and the scope of delivery:

- Parallactic mount with instruments up to 20kg loadable
- Mount weight ... 18.6kg
- Tripod weight ... 7,7kg
- 9 adjustment speeds (5 ° / sec, 2 ° / sec, 1 ° / sec, 64x, 16x, 8x, 4x, 1x, 0.5x)
- Tracking speeds - Siderial, Solar and Lunar
- Changeover north / south
- Power supply - 12V / 1.5 amp - cigarettes lighter cable included
- Two counterweights with 8.2 kg is included in the basic equipment
- Permanent correction of the tracking error (NexRemote software)
- RS232 cable