HIGHLIGHTS
- 14" Schmidt-Cassegrain Optical Tube Assembly (OTA)
- Features Celestron's premium patented StarBright XLT optical coatings
- 3910mm focal length (f/11)
- Fastar compatible
- Tube constructed of durable and lightweight aluminum
The Celestron C14-AF XLT optical tube is a world-class instrument that delivers a level of detail to all your favorite deep sky objects. This observatory-ready instrument the largest in its class with over three times the light gathering power of an 8" telescope. With this OTA, you can see amazing detail on the surface of Jupiter, resolve details on the surface of Mars, see Cassini's Division in the rings of Saturn, and even the distant planets of Uranus and Neptune.
The C14 packs serious light gathering ability into its durable aluminum optical tube. It's an ideal instrument for serious astrophotography, providing high-contrast views even at very high magnifications. It is equipped with Celestron's patented StarBright® XLT optical coatings, which visibly increase contrast and light transmission for brighter deep space images and shorter exposure times.
The tube offers a focal ratio of f/11 with the added versatility of Fastar (see below). You can also pair it with the f/6.3 focal reducer for even more astroimaging options.
This flagship OTA can be mounted on a multitude of computerized telescope mounts thanks to its CGEM-style dovetail bar. It's sure to take your visual observing and imaging to the next level.
StarBright XLT coatings
StarBright XLT is Celestron's revolutionary optical coating system. It consistently outperforms all other coatings in the commercial telescope market. There are three major components that make up our StarBright XLT high-transmission optical system design:
- Unique enhanced multi-layer mirror coatings made from precise layers of aluminum, SiO2 (quartz), TiO2 (titanium dioxide), and SiO2 (silicon dioxide). Reflectivity is fairly flat across the spectrum, optimizing it for both imaging and visual observing.
- Multi-layer anti-reflective coatings made from precise layers of MgF2 (magnesium fluoride) and HfO2 (hafnium dioxide). Hafnium-a rare element that costs nearly $2,000 per kilogram-gives us a wider band pass than the titanium used in competing coatings.
- High-transmission water white glass is used instead of soda lime glass for the corrector lens. Water white glass transmits about 90.5% of light without anti-reflective coatings; that's 3.5% better than uncoated soda lime glass. When water white glass is used in conjunction with StarBright XLT's anti-reflective coatings, the average transmission reaches an astonishing 97.4.
These three components make StarBright XLT one of the finest coatings available.
SPECIFICATIONS
| Optical Design |
Schmidt-Cassegrain |
| Aperture |
355.5mm (14") |
| Focal Length |
3910mm (154") |
| Focal Ratio |
f/11 |
| Focal Length of Eyepiece 1 |
40mm (1.57") |
| Magnification of Eyepiece 1 |
98x |
| Finderscope |
9x50 |
| Star Diagonal |
2" with 1.25" adapter |
| Optical Tube |
Aluminum |
| Fastar Compatible |
Yes |
| Highest Useful Magnification |
840x |
| Lowest Useful Magnification |
51x |
| Limiting Stellar Magnitude |
15.3 |
| Resolution (Rayleigh) |
0.39 arc seconds |
| Resolution (Dawes) |
0.33 arc seconds |
| Light Gathering Power (Compared to human eye) |
2581x |
| Secondary Mirror Obstruction |
114mm (4.5") |
| Secondary Mirror Obstruction by Diameter |
32% |
| Secondary Mirror Obstruction by Area |
10% |
| Optical Coatings |
StarBright XLT |
| Optical Tube Length |
787mm (31") |
| Optical Tube Diameter |
400.5mm (15.77") |
| Optical Tube Weight |
46 lbs (21 kg) |
| Dovetail |
CGE Dovetail Bar |
CGE PRO Description
In addition to being fully computerized with a database of over 40,000 celestial objects, the New CGE Pro German Equatorial mount has been completely redesigned to offer numerous design advantages for the Astrophotographer:
Increased Payload Capacity
Able to hold our 14" SCT telescope more securely as well as larger optical tubes up to a maximum instrument capacity of 90 lbs (not including counterweights).
All-Star Polar Alignment
Choose any bright alignment star for a software assisted alignment of the mount's polar axis that will have you ready for imaging even if you can't see the North Star.
No-Tool polar alignment
Larger hand knobs for both Altitude and Azimuth adjustments.
Meridian Tracking
Extended tracking past the Meridian of up to 20 degrees of uninterrupted imaging through the best part of the sky.
Faster slew speed
Improved gearing and motors provide faster slew speeds than ever before with a maximum slew rate of over 5°/per second.
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 CGE Pro to have the payload capacity of that of much larger (and expensive) mounts without sacrificing smooth tracking motion and pointing accuracy across the entire sky.
Accuracy
The hallmark of any telescope mount is its ability to find, center and track celestial objects with the highest degree of accuracy. The CGE Pro provides the precision pointing and tracking accuracy needed for demanding visual and imaging pursuits.
Pointing
With just a standard hand control alignment, the CGE Pro has the ability to center a star in your eyepiece or CCD chip to within 5 arc minutes. Using NexStar's advanced pointing features such as Calibration Stars, Sync and Precise GoTo, further improves the pointing accuracy to as low as 1 arc minute in the desired region of the sky.
Tracking
With larger .75" pitch diameter worm gear and 6" pitch diameter worm wheel, precision made cut-steel gears in gearboxes, and seven slot-skewed armature motors, the CGE Pro delivers smooth +/- 5 arc second tracking accuracy typical unguided periodic error, which can be further reduced with PPEC.
Mount Calibration
Celestron's NexStar hand control has built-in compensation features essential for accurately placing small objects on the center of your CCD chip or high power eyepiece. Aligning on multiple Calibration Stars creates a model of the opto-mechanical inaccuracies inherent in all equatorial mounts. This model is stored within the hand control and is used to compensate for these inaccuracies, thus improving your pointing precision each time you slew your telescope.)
Mount Modeling
Celestron's NexStar hand control has built-in mount modeling features essential for accurately placing small objects on the center of your CCD chip or high power eyepiece. Aligning on multiple Calibration Stars creates a mathematical model of the opto-mechanical inaccuracies inherent in all equatorial mounts. This model is stored within the hand control and is used to compensate for these inaccuracies, thus improving your pointing precision each time you slew your telescope.
And of course, the CGE Pro is also fully T-Point compatible (available from Software Bisque) for ultra precise pointing across the entire sky.
In addition to these improvements, the Celestron line of German Equatorial mounts has long been recognized for features preferred by visual observers and astrophotographer alike. Among them include:
Portability - Set up and transportation of the CGE Pro telescopes is made easy by separating the mount into smaller, easy-to-carry components. Unlike fork arm mounted telescopes, the CGE's optical tubes can be quickly removed from their mounts making even the CGE Pro1400 easily assembled in minutes.
Stability - Recognized for superior stability, German Equatorial mounts place the center of gravity directly over the tripod legs and can be easily polar aligned without the use of an optional equatorial wedge. This proven design reduces the "tuning fork" vibration that can be associated with undersized fork mounts. An improved Super HD Tripod supports the CGE Pro mount. This fully extendable tripod is made from the finest 2.75" stainless steel and can be raised to a height of 55". 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.
Balance - CGE Pro Equatorial mounts can easily be balanced in both axes. Simply sliding the counterweight for Right Ascension and moving the optical tube along its dovetail mounting for Declination, accomplish balancing the weight of camera equipment and other visual accessories. This means that no additional weight needs to be added to balance the telescope when additional accessories are added.
Clearance - CGE Pro 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. Software features allow the user to set the mounts slew limits to guaranty safe motion. This is particularly useful when adding photographic and CCD instruments that extend from the rear of the telescopes.
All CGE mounted telescopes are compatible with Celestron's SkySync GPS accessory. Combine the GPS and built-in real time clock, and these telescopes will keep track and remember their exact location and time without having to enter the information into the hand control.
