Recognized For Superior Stability
An improved Super HD Tripod supports the CGE mount. This fully extendable
tripod is made from the finest cold rolled carbon steel and can be raised to a height of 50 inches. The tripod uses a dual leg
support for maximum rigidity with an upper leg brace to provide an outward preload and a lower leg brace providing inward
tension.
CGE Equatorial Mounts Can Easily be Balanced on Both Axes
Balancing the weight of camera equipment and
other visual accessories is accomplished by simply sliding the counterweight for Right Ascension and moving the optical tube along
its dovetail mounting for Declination. This means that no additional weight needs to be added to balance the telescope when
additional accessories are added.
Clearance For Accessories
CGE mounts support their tubes at a single
contact point allowing the tube to move freely around its polar axis without making contact with the telescope's mount. This is
particularly useful when adding photographic and CCD instruments that extend from the rear of the telescopes.
GPS
Compatible
All CGE mounts are compatible with Celestron's CN16 GPS accessory (Item #93967). Combine the GPS and
built-in Hibernate mode and these mounts will keep track and remember their exact location and time without the need to re-enter
the information into the remote hand control.
Your wait is over. You've been asking us for a complete selection of our top-of-the-line Schmidt-Cassegrains mounted on a beefy
computerized German Equatorial mount. We proudly announce the CGE Series
Schmidt-Cassegrain Telescope (SCT) Optical Tube Assembly (OTA) and CGE Computerized Mount - Portability and Stability In A
Complete System. All CGE's can be quickly disassembled into easy to handle transportable components - even the CGE 1400!
Recognized for superior stability, German Equatorial mounts eliminate the tuning fork like vibration associated with fork mounted
telescopes. The new CGE's are ideal for viewing objects in every part of the sky - even in the North where fork mounts have
difficulty pointing.
Features:
* Eyepiece: 2" 40mm Barrel
* Star Diagonal: 2" Mirror Diag. w/ 1 1/4" Adapter
* Finderscope: 9X50
* Power Supply: Car Battery Adapter
* Counter Weights: 2 - 25 Lb.
* Focal Length: 3910mm; f/10
* Secondary Obstruction: 4.5"
* Resolution (Rayleigh): .39 arcseconds
* Coatings: StarBright
* Optical Tube: Aluminum
* Fastar Compatable: Yes
Easy to polar align - German Equatorial mounts are the choice of the best astro-photographers
Easy to counter balance - In both RA and Dec, for smooth photographic quality tracking
State-of-the-art Mount - The CGE Mount is made of CNC machined aluminum and stainless steel and features the NexStar®
control system.
Drive Base Features:
. Autoguide port
. PC port
. 3 Accessory Ports
. Real time clock - maintains time even when powered down
. Strain relief power cord cable protection
. Backlit power switch
Drive System:
. U.S. manufactured Pittman 12V DC servo motors
. U.S. manufactured Berg bronze drive gear mated with stainless steel worm shafts
. 4 point RA clutch system for no slip pointing precision.
Tripod Features:
. Dual Leg Support
. Center leg brace provides outward preload
. Lower leg brace provides inward preload
. Extendable powder-coated carbon steel legs
The Celestron CGE series of telescopes contain Pittman 12V DC servo motors; Berg bronze drive gears with stainless steel worm
shafts for smooth operation. The overwhelming quality speaks for its self.
Specifications:
Software
* 40,000 + Objects
* 400 User defined objects
* Hibernate - Maintains alignment even while powered down
* Polar alignment routines for Northern and Southern hemisphere
* Filter limits - Displays only objects above the horizon
* Permanent programmable PEC - Corrects periodic tracking errors inherent in all worm drives
* Smooth ramping of slew motors to reduce wear on drive train
Electronics
* Home sensors on RA and Dec axes
* Real time clock
* Fail safe slew limit switches in RA
* 12V DC Servo Motors with integrated optical encoders, 256CPR used in quadrature
* Encoder resolution: .11 arcseconds
Mechanics
* CNC machined aluminum and stainless steel components
RA axis
* 1" solid ground stainless steel shaft
* Two Preloaded .9835" I.D. x 2.047" O.D. tapered roller bearing
* One 4.724" O.D. x 3.543" I.D. thrust bearing
* 180 tooth, 5.625" diameter enveloping bronze gear preloaded to maintain gear mesh while clutch tension varies, manufactured
to AGMA 10 quality.
* .4375" diameter precision 303 stainless steel worm, manufactured to AGMA 10 quality
* 4 point RA clutch system pre-loading a 4.65" stainless steel disk for no-slip drive and pointing precision
Declination axis
* 1" solid ground stainless steel shaft
* Two Pre-loaded .9835" I.D. x 2.047" O.D. tapered roller bearings
* One 3.250" O.D. x 2.500" I.D. thrust bearing
* 180 tooth, 5.625" diameter non- enveloping bronze gear preloaded to maintain gear mesh while clutch tension varies,
manufactured to AGMA 10 quality.
* .4375" diameter precision 303 stainless steel worm, manufactured to AGMA 10 quality
* 2 point Dec clutch system pre-loading a 4.65" stainless steel disk for no-slip drive and pointing precision
* Latitude Range: 10° to 60°
* CGE Maximum Payload: 65 lbs.
Tripod
* Tripod height: 36" to 50"
* Leg material: cold rolled carbon steel
* Upper leg diameter: 2.75"
* Lower leg diameter: 2.375"
Celestron has brought its renowned StarBright technology to an even higher level of light transmission with the introduction of
our new optional StarBright XLT High Performance Optical Coating System.
StarBright XLT Optical System Design - You'll See The Light.
One of the most important factors in the evaluation of a Schmidt-Cassegrain telescope's optical system performance is its
transmission - the percentage of incoming light that reaches the focal plane. The design of the XLT System accomplishes two
crucial objectives: Develop a coating system that is optimized for visual use and for CCD/Photographic imaging.
The StarBright XLT System - What Makes It Different Makes It Better
There are three major components that make up our StarBright XLT high transmission optical system design:
1. Unique enhanced multi-layer mirror coatings
Our mirror coatings are made from precise layers of Aluminum (Al), SiO2 (quartz), TiO2 (Titanium Dioxide), and Si02. Reflectivity
is fairly flat across the spectrum, optimizing it for both CCD imaging and visual use. Click here to see a plot of the
reflectivity of XLT's Mirror Coatings.
2. Multi-layer anti-reflective coatings
Made from precise layers of MgF2 (Magnesium Fluoride), and HfO2 (Hafnium Dioxide) A rare element costing nearly $2000 per
kilogram, Hafnium gives us a wider band pass than Titanium, used in competing coatings. Click here to see a plot of XLT's
corrector transmission.
3. High Transmission Water White glass
Celestron Schmidt-Cassegrain optical systems with optional StarBright XLT coatings use Water White glass instead of Soda Lime
glass for the corrector lens. Water White glass transmits about 90.5% without anti-reflective coatings. That is 3.5% better
transmission than uncoated Soda Lime glass. When Water White glass is used in conjunction with StarBright XLT's anti-reflective
coatings, the average transmission reaches 97.4% - an 8% improvement! Click here to see a plot of water white glass versus soda
lime.*
These three components of our 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.
