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|Optical Design||Schmidt Cassegrain|
|Mount Type||DX Computerized Equatorial|
|Focal Length||3910 mm|
|Optical Coatings||Starbright XLT Coating|
|Optical Tube Length||24 inch|
|What is more important to you?||I want to photograph the night sky|
|Would you like a telescope to navigate for you?||Yes, I would like a scope to guide me.|
See below for the Review from June 2017 of the UK astronomy magazine Astronomy Now
Celestron's newly designed CGX-L Computerized Equatorial mount is the latest addition to our fully computerized equatorial mount series. Capable of carrying Celestron’s largest optical tubes with ease, CGX-L is designed for backyard observatories and remote imagers looking for exceptional load capacity to weight ratio, compact design, and innovative features that fully support large telescopes, imaging kits, and the latest in wireless tech accessories.
Key design goals included larger 144 mm diameter worm wheels which provide smoother operation and can more accurately drive heavier loads, longer 270 mm dovetail saddle to support larger optical tubes, remote operation friendly features such as home and limit optical sensors, easier polar alignment adjustments, and better cable management overall. In addition to that, we’ve made mechanical and ergonomic improvements throughout to make the mount sturdier, easier to use, and easier to transport. COMPACT. ERGONOMIC. INNOVATIVE.
The ultimate imaging optic. 14” aperture, 3910mm focal length, and coma free with a flat focal plane. Can be used for imaging at 3910mm f/11, 7820mm f/20 with a 2X Barlow, 2490mm f/7 with the 0.7X 14” Edge HD reducer, or 675.6mm f/1.9 with the Hyperstar. This makes the C14 Edge HD the most versatile and desirable imaging optic available for the amateur. The Edge HD telescopes and optical tube assemblies have an optical prescription that works in a similar way to the standard f/11 and f/10 SCTs but with further corrections. With the standard SCT, the Schmidt plate corrects for lower order spherical aberration, and coma is reduced by aspherizing the secondary. There is however, still some residual off-axis coma visible on wide field images. This means that star images outside the diffraction limited field become increasingly comatic toward the field edge, extended detail (galaxies, the moon, nebulae), outside the diffraction limited field become increasingly blurred, and the faintest objects at the edge of the field can be rendered beyond visibility. If we remove the residual coma, this problem largely disappears. However, we still have aberrations such as field curvature to contend with. Visually, field curvature can be partly dealt with by simply re-focusing the eyepiece, so that the detail at the edge of the field comes into focus. We can’t do this with a flat detector such as a CCD or CMOS chip. The correcting lens group in all the Edge HD scopes removes off-axis coma and is designed to provide a field with no field curvature over an area covering a conventional 35mm full frame detector. So, the result is a flat focal plane aplanat. It may be that Celestron have also corrected for any off-axis astigmatism, in which case we can call the Edge HDs flat focal plane anastigmats, however, Celestron do not suggest that off-axis astigmatism is an aberration they have corrected for, so it is more appropriate to term the Edge HDs as flat focal plane aplanats.
The secondary can be removed to add the Hyperstar system for the C14 OTA. It is important to note that with the secondary removed, the lens group in the baffle tube that corrects for off-axis coma and gives the flat focal plane, is not used at all. The correcting lens of the Hyperstar unit takes over and creates the corrected field at f/1.9. In this respect, the Edge HD telescopes offer no real advantage over the standard SCTs as a Fastar telescope. If a Celestron SCT optical tube assembly (whether the Edge HD design or standard SCT design), is chosen for f/1.9 Hyperstar (Fastar) use only, the standard SCT offers the same performance as the Edge HD.
On the CGX-L mount, this combination should be considered as an observatory only instrument. On the CGX-L mount this telescope is a serious instrument for advanced amateurs and research facility, but also easily transportable for star parties or to a dark sky site. For schools and universities with astronomy or astrophysics on the curriculum, the CGX-L 14 Edge HD can be used successfully for practical research for the undergraduate and post graduate. Please contact us here at the OpticsShop in Northallerton for advice and information on our observatory installation service.
Requirements. You will need a 12v DC Powertank or 230v AC – 12vDC power supply that is regulated and tip positive.
Budget for the new 14” Edge HD 0.7X focal reducer, a Celestron dew shield, the 2” Baader Oxygen III and UHC filters, a Baader polarizer set and the t-adapter for the 14” Edge. Collimation is via the three screws on the front face of the secondary mount. Keep these telescopes collimated correctly for optimum performance.
With any Cassegrain telescope you will have to consider the affect dew fall. The cheapest solution is a lens hood but when dew is a real problem then heater straps will evaporate dew off.
COMPUTERIZED MOUNT FEATURES:
NEW CGX-L FEATURES
Increased 75 lb load capacity. Exceptional load capacity to weight ratio
Additional Aux accessory ports and autoguider port on the Dec axis for better cable management
Larger 144 mm diameter worm wheels to better and more accurately drive heavier loads
Longer 270 mm dovetail saddle to better support larger optical tubes
Massive 70 mm stainless steel tripod legs with a wider stance for improved stability under heavy loads
New accessory tray holds three 1.25” and two 2” eyepieces with an upright stand for your smartphone or tablet
Heavy duty, 31.5 mm stainless steel counterweight shaft to support additional counterweights
Optional add-on polar axis finderscope custom designed for CGX and CGX-L
Compact, lower profile equatorial head provides improved stability and portability. Sturdier and more rigid with quicker dampening time
Improved motors provide more torque, better slewing and tracking under heavy loads
Heavy duty belt-drive system minimizes backlash while providing smooth motor operation at full capacity
Clear windows built into motor covers so pulleys and belts can be monitored
Spring-loaded brass worm wheel and stainless steel worm gear reduce friction and provide optimum gear mesh
Internal cabling for worry-free remote operation. Power input and lower accessory ports remain stationary while the mount slews to avoid snags
Internal hard stops for both axes prevent cable tension and tripod strike
Internal optical sensors on both axes for simple and safe remote operation
-Home sensors allow the mount to always start in the index position regardless of orientation before a power reset
-Limit sensors automatically shut off slewing or tracking before reaching the hard stop fail safe
Includes Celestron's new PWI telescope control software, co-developed by PlaneWave Instruments. Software features multi-point mount modeling for extremely precise pointing accuracy
Software Polar Align: “All-Star Polar Alignment” allows quick and very precise polar alignment. Align on any bright named star without extra polar alignment accessories, apps, or other assistance
Adjustable EQ head position to optimize center of gravity over the tripod and fully utilize the increased 3º-65º latitude range
Dual-fit Vixen/CG-5 and Losmandy/CGE dovetail saddle
+20º of additional tracking past the meridian on either side
Redesigned tripod has a widened stance for added stability. The minimum tripod height has also been lowered per user feedback
Tripod legs can be collapsed with accessory tray installed for faster setup and transport
Integrated handles for easy transport and portability
All-new ergonomically designed dovetail clamping knobs
Innovative and improved polar alignment adjustment system
All-new ergonomic adjustment knobs with reduced friction for smooth and easy positioning under full loads. Stationary latitude knob with a newly-designed linkage system greatly reduces the amount of friction when polar aligning the mount. Redesigned azimuth adjustment with low-friction Teflon bearings to make adjustments easy under full load. No more binding, rough adjustments!
Easy to read latitude scale
NexStar+ hand control with USB port
USB 2.0 port used to connect directly to PC with PWI Software
2 available autoguider ports for optimum cable management
PEC sensor and PPEC ready
Threaded 12VDC power input barrel connector
Internal Real Time Clock (keeps time and site information saved)
On/Off rocker switch with red LED
|Optical Tube Info:|
|Aperture (mm)||356 mm (14 in)|
|Focal Length||3910 mm (154 in)|
|Focal Length of Eyepiece 1 (mm)||23 mm (0.91 in)|
|Magnification of Eyepiece 1||170 x|
|Star Diagonal||2" with 1.25" adapter|
|Instrument load capacity||75 lb|
|Tripod height adjustment range||35.75” to 52.75”|
|Tripod leg diameter||2.75"|
|Latitude adjustment range||3º-65º|
|Tripod Weight||46.2 lb|
|EQ Head Weight w/o Counterweight Shaft||47 lb|
|Total EQ Head Weight||52.6 lb|
|Max Slew Speed||4º/second (3º/second is default)|
|Tracking Rates||Sidereal, Solar and Lunar|
|Number of Auxiliary ports (for hand control and accessories)||4|
|Software||PWI Telescope Control Software|
|CGX-L Equatorial Head|
|3 x 22 lb Counterweight|
|NexStar+ Hand Control|
|DC Power Cable (plugs into cigarette lighter socket)|
|8 mm Allen Wrench (contained in rear carry handle)|
Celestron’s telescopes reach a new level with integrated WiFi! Leave your hand control behind and slew to all the best celestial objects with a tap of your smart device. Connect your device to your WiFi telescope’s built-in wireless network and explore the universe with Celestron’s SkyPortal mobile app for iOS and Android.
|Celestron’s newest planetarium app is an astronomy suite that redefines how you experience the night sky. Explore the Solar System, 120,000 stars, over 200 star clusters, nebulae, galaxies, and dozens of asteroids, comets, and satellites—including the ISS. SkyPortal includes everything you need to experience the night sky in an exciting new way.|
With Celestron’s patented StarSense Technology, telescope alignment has never been easier! Just attach the StarSense AutoAlign accessory, push the Align button on the hand control or smart device, and StarSense begins capturing and comparing images of the night sky against its internal database.
In about three minutes, it’s gathered enough information to triangulate its position and align itself. Then, press the Sky Tour button: StarSense will automatically slew to all the best stars, planets, galaxies, and more currently visible in the night sky.