CGX-L 1400HD 14” SCT with EdgeHD High Defintion Optics 12077

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Starbright XLT optics
This advanced optical coatings package includes multiple layers of vacuum-deposited high reflectivity aluminum on both primary and secondary mirrors. The coating layers are enhanced with titanium dioxide for maximum reflectivity and then overcoated with a protective layer of silicon monoxide (quartz) for long life.

A unique combination of magnesium fluoride and hafnium dioxide high transmission antireflection coatings is vacuum-deposited on both sides of the Schmidt corrector lens for maximum light throughput and contrast. The corrector lens itself is made of high transmission water white float glass instead of the conventional soda lime glass (which has 3.5% lower transmission than water white glass) that’s used in other telescopes.

Starbright XLT multicoatings give you higher light transmission for brighter deep space images and shorter exposure times during CCD and DSLR photography. Across the total visual/photographic spectrum from 400nm to 750nm, independent laboratory tests show the new Starbright XLT coatings are 16% brighter overall than even the original industry-standard Starbright multicoatings. The XLT coatings also visibly increase the contrast on subtle lunar, planetary, and nebula details when compared with a scope with standard coatings or ordinary multicoatings.

CGE Pro NexStar computer
The NexStar computer hand control of the CGE Pro mount has a built-in database of more than 40,000 stars, deep space objects, and solar system objects it can locate for you. These include the complete RNGC, Messier, Caldwell, IC, and Abell catalogs; selected SAO stars; the planets, the Moon, and others. The 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; non-planetary solar system objects; and asterisms. It contains enough fascinating objects to keep you busy observing for the rest of your life.

You can also store and edit the right ascension and declination of 100 objects of your own choosing, such as the comet and asteroid coordinates published monthly in Astronomy and Sky & Telescope magazines. The computer control can quickly find any of those objects at your command, and track them with high accuracy for visual observing or astrophotography.

All of the database and scope operation information is displayed on a double line, 16-character, liquid crystal display on the hand control. This display leads you through the steps necessary to line up the scope on the sky, locate objects, control scope functions like the brightness of the hand control display, and much more. It shows you basic information about the object being viewed (such as the object’s name, catalog designation, type, magnitude, and so forth). In addition to this basic information, there is enhanced information on over 200 of the most note-worthy objects. The display can also show you the right ascension and declination coordinates at which the scope is aimed.

The NexStar hand control software, motor control software, and database updates are flash upgradeable over the Internet.

There are 19 fiber optic backlit LED buttons that glow a soft red in the dark to make it easy for you to control the computer without affecting your dark-adapted vision. An RS-232 communication port on hand control allows you to control the mount via a personal computer using the supplied NexRemote telescope control software. P>An autoguider port, PC port, and auxiliary ports are located on the mount’s electronic pier for use in long exposure astrophotography. The autoguider port can use a six-pin RJ-12 modular jack ST-4 compatible CCD autoguider to automatically control the drive motors during long exposure astrophotography.

Specially designed power management electronics deliver constant regulated power to the motor so that it is capable of driving the mount even when your scope 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.

The inherent drive accuracy (periodic error) of the CGE Pro mount is a very good +/- 9 arc seconds or better. However, this can be further improved by training the permanent periodic error correction circuit built into the NexStar hand control to reduce the periodic error inherent in all telescope worm gear drives.

For the astrophotographer, special all-star polar alignment software allows you to choose any bright alignment star for a software-assisted alignment of the mount’s polar axis on the celestial pole, even if you can't see the North Star. It works in both northern and southern hemispheres. Once polar aligned, several different sky alignment methods are built into the NexStar computer to line up the scope on the celestial sphere, allowing you to choose a level of computer accuracy in automatically finding objects with which you are comfortable. These include 2-Star Align, Solar System Align, Last Alignment, Quick Align, and 1-Star Align,

With just a standard hand control alignment, the CGE Pro computer has the ability to center a star in your telescope’s eyepiece or on a CCD chip to within 5 arc minutes. Using the NexStar computer's advanced pointing features (such as Calibration Stars, Sync, and Precise Go-To) further improves the pointing accuracy to as low as 1 arc minute in the desired region of the sky. The high precision pointing subroutine (Precise Go-To) in the computer lets you point accurately at objects that you want to photograph that are too dim to be seen though the scope. Other software features include: database filter limits, a mount hibernate mode, and user-defined slew limits.

In addition, the NexStar computer hand control is GPS-compatible (using an optional inexpensive CN16 GPS module) for full GPS (Global Positioning System) satellite accuracy. Once the scope is approximately polar aligned, the 16-channel CN16 GPS system uses signals from government satellites to calculate the scope’s location on earth with an accuracy measured in meters. The system also calculates the current time based on the split second accuracy of the GPS time signals. After the CN16 quickly completes these calculations and enters the information into the computer control for you automatically, the computer then orients the scope with the sky, slews to a pair of guide stars, asks you to confirm that the stars are in the center of the field (and center them if they’re not precisely aligned), and then starts finding and tracking over 40,000 objects for you at your command. With the CGE Pro go-to mount and the CN16, orienting the scope in time and space on earth and aligning the scope on the sky becomes almost as easy a task as simply turning the scope on.

Celestron EdgeHD optics
   Celestron EdgeHD high definition optics are aplanatic, or corrected for spherical aberration. They are essentially conventional Schmidt-Cassegrain optics (spherical primary mirror, spherical secondary mirror, and full-aperture Schmidt aspheric corrector lens), but with the addition of a dual-element multicoated field flattener lens installed in their central baffle tube. The field flattener is designed to reduce off-axis coma and produce aberration-free images across a wide visual and photographic field of view.

   In addition to reduced off-axis coma, the EdgeHD optical system delivers an astrograph-quality flat focal plane across the entire field. Many optical designs that advertise themselves as “astrograph” quality actually produce their pinpoint stars across a curved focal plane. While this may be acceptable for visual observing, stars appear out of focus at the edge of the field when used with the flat rectangular imaging sensor of a DSLR digital camera or a large format CCD. The built-in field flattener of the EdgeHD optical system produces a focal plane more than three times flatter than a standard Schmidt-Cassegrain telescope and dramatically flatter than other competing coma-free designs. This guarantees visibly sharp stars across some of the largest CCD and DSLR chips available today.

   The superior edge performance of the EdgeHD optic system not only creates rounder, more point-like, and more pleasing stars at the edge of the field but actually improves the resolution and limiting magnitude when compared to telescopes of equal aperture. Poor edge quality or field curvature in conventional optics can spread out a star’s image at the edge of the field so much so that the brightness of a star appears the same as the sky background, making it undetectable to your eye (or camera). EdgeHD optics give you smaller (more concentrated) stars that create brighter images that pop out of the sky background, allowing you to see down to a fainter magnitude. This lets you capture fainter stars and galaxies out to the corners of your full frame camera chip than is possible with conventional telescope designs of equal aperture.

This Celestron CGE Pro 1400HD telescope has:

• 14” EdgeHD high definition Fastar-compatible aplanatic Schmidt-Cassegrain optics 
• observatory-grade 90 pound payload capacity CGE Pro German equatorial mount 
• NexStar go-to computer hand control with 40,000+ object database 
• StarBright XLT optical multicoatings for the highest possible light transmission
• 9 x 50mm finderscope 
• NexRemote software to control the telescope via computer 
• 2-year warranty

    The big 14” aperture Celestron CGX-L 1400HD telescope has new and unique aplanatic (free from coma and corrected for spherical aberration) EdgeHD high definition/high contrast Schmidt optics. The advanced Fastar-compatible EdgeHD optical system uses a dedicated dual-element field flattener lens made from premium Schott optical glass in its central baffle tube to reduce off-axis coma and produce aberration-free images across a wide 42mm image circle (as large as the diagonal of a 35mm negative or large format CCD chip and ideal for astrophotography).  Even better, those EdgeHD optics are mounted on a rock-solid Celestron CGX-L go-to German equatorial mount.

   In addition to reduced off-axis coma, the EdgeHD optics deliver an astrograph-quality focal plane more than three times flatter than standard Schmidt-Cassegrains and dramatically flatter than competing coma-free designs. Stars are smaller and more concentrated, creating brighter images and allowing you to see down to a fainter magnitude than other equally-sized telescopes. You see sharp point-like stars to the very edges of some of the largest CCD and DSLR chips available today.

    For the ultimate in brightness and contrast, the CGX-L 1400HD optical tube has state-of-the-art Starbright XLT multicoatings. Its 14” aperture has a light grasp that’s nearly 2600 times that of even the sharpest dark-adapted eye (36% greater than a 12” telescope and almost twice that of a 10” scope). With an effective light-gathering power equal to that many eyes, the EdgeHD optics of the CGX-L 1400HD can reveal to you faint deep space objects in amazing and subtle detail. The unique Fastar-compatible EdgeHD optics allow very short exposure CCD imaging at a phenomenally-fast f/2 focal ratio by adding an optional accessory lens, making quick work of recording wide-field images of faint deep space objects. Simply adding an optional accessory lens to the unique Fastar-compatible EdgeHD optics lets you make quick work of recording wide-field images of faint deep space objects by cutting the scope’s focal ratio to a phenomenally-fast f/2. Combine that immense light-gathering power and super-fast focal ratio with the newly-designed Celestron CGX-L go-to German equatorial mount and you have a mount/OTA combination that is ideal for very serious imaging and visual observing.

   The scope’s advanced NexStar computer hand control makes finding over 40,000 of those stars and objects easy and automatic, so you can spend more time looking at those objects, rather than looking for them.

This Telescope’s Optical System . . .

  • EdgeHD aplanatic Schmidt-Cassegrain optical tube: 14” aperture (3910mm focal length f/11). Guaranteed diffraction-limited optical performance, free from coma and corrected for spherical aberrations (aplanatic design). The optical design is a Sky & Telescope Hot Product for 2010The 31” long aluminum optical tube has a large handle on the rear cell and weighs 45 pounds, making it a reasonable task to transport and assemble the scope in the field. For more details, click on the “EdgeHD optics” icon above.

  • Starbright XLT fully multicoated optics: This high transmission/high reflectivity optical coatings package gives you visibly higher light transmission for brighter deep space images and shorter exposure times during imaging. It also increases the contrast on subtle lunar, planetary, and nebula details when compared with a scope with ordinary coatings or multicoatings. For more details, click on the “Starbright XLT” icon above.

  • Tube vents: Two cooling vents on the rear cell allow warm air to be released from behind the primary mirror when the scope is taken out for a night’s observing or imaging. This shortens the amount of time needed for the optics to cool down to ambient air temperature for peak performance. Each vent has an integrated 60 micron micro-mesh filter guaranteed to let warm air out without letting dust in.

  • Fastar compatible: For the ultimate in wide-field catadioptric imaging, the EdgeHD optical tube is Fastar compatible to allow CCD imaging at a blazingly-fast f/2 focal ratio. An optional Fastar lens assembly lens replaces the scope’s removable secondary mirror (an exchange that takes only a few minutes). Your CCD camera is attached to the Fastar lens. This puts your camera at the f/2 position in the center of the Schmidt corrector lens at the front of the scope, rather than in its normal f/11 position at the Cassegrain focus at the rear. 
    Using the Fastar system and a sub-$1500 Orion Star Shoot Deep Space Imager Pro CCD camera, the 14” CGE Pro 1400HD will record a wide 111 x 74 arc minute field – a long axis over three and one half times the diameter of the full Moon, an immense field for a scope of this size. To assure repeatability when you switch between Fastar and conventional imaging, the scope’s optical tube is opto-mechanically aligned on a laser bench during manufacture so that all components are axially symmetric in any configuration.

  • Focusing: Focusing is accomplished by turning a knob at the rear of the scope body that moves the primary mirror fore and aft along a central baffle tube to adjust the focus. The Celestron focusing mechanism is supported by two pre-loaded ball bearings, minimizing the “mirror flop” typical of bushing focus mechanisms that causes image shift during critical focusing.

  • Mirror locks: Flexible tension locks hold the mirror in place after correct focus is achieved for imaging and reduce image shift when rotating the tube around the mount (when moving past the zenith during astrophotography, for example). Unlike other designs that have only one locking knob located off to one side of the mirror, the Celestron system uses three locks equally spaced around the mirror to distribute the mirror locking force symmetrically. The focuser itself acts as one of the locks, while two flexible rods spaced 120° away in either direction act as the second and third locks. Controlled by variable tension knobs on the rear cell, these rods act in conjunction with the focuser to hold the mirror in place without putting any asymmetrical force or pressure on the mirror. This keeps the image centered in the eyepiece (or chip) no matter what the orientation of the optical tube.

  • Finderscope: 9 x 50mm straight-through achromatic design, with a wide 5.8 degree field of view, mounted in a spring-loaded easy-adjust quick release bracket..

  • Star diagonal: 2” first-surface mirror type, with 1.25” adapter.

This Telescope’s Mount . . .

  • The German equatorial mount has long been the favored choice of astronomy buffs and astrophotographers because of its stability and portability. It is more stable because the center of gravity is directly over the center of its base, and more portable because it can be broken down into smaller component parts than a fork-mount telescope for easy storage and transportation.

    For astrophotography, the German equatorial mount offers easier balancing; unlimited space at the rear of the telescope tube to mount a long camera equipment train that can’t bump into the drive base, as is the case with many fork-mounted scopes; and whole sky access that many fork-mounted scopes can’t achieve.

    Celestron has looked to update the way that people interact with their equipment.  This quest has brought out a new EQ Mount Series, the CGX.  This particular model in the series is the CGX-L and boasts a 75 pound payload capacity.

    Heavy duty mount head: The Celestron CGX-L is a newly-designed high payload capacity/high precision go-to German equatorial mount that epitomizes all of these German equatorial mount virtues.  With its full 75 pound payload capacity it will carry Celestron SCT/HD optical tubes up to 14” in aperture, as well as virtually any other optical tube and accessory payload weighing up to 75 pounds.

    New features are everywhere in the mount head:

    1. Ergonomic handles help you move the 47 pound head with ease.  That’s right; the head weighs 47 pounds and will carry 75.  It is an incredible load to weight ratio.

    2.  Additional accessory ports built into the dovetail saddle plate of the equatorial head.  There are two auxillary ports as well as an autoguider port.  The internal cabling of the CGX-L mount works hand in hand with these new ports on the saddle helping the imager in all of us manage our cables.

    3.  The dovetail saddle plate is longer for added stability and will also accept both Vixen/AVX and Losmandy/Celestron D Style dovetails.

    4.  There are built in home and limit sensors.  The home sensor will take the scope back to its home position at any time and the limit sensor will prevent the mount from slewing past a certain point.

    5.  There are also built-in mechanical hard stops to prevent an instrument from damage should you forget to lock the mount.

    Mount drive system: The CGX-L mount head contains 144mm worm wheels in both Right Ascension and Declination.  The improved drive system uses a belt-driven worm gear that is spring loaded.  The significance of this is it allows the drive to maintain optimum gear mesh for smoother tracking and less backlash.

    The mount requires 2.5 amp 12 VDC power to operate. The maximum 2.5 amp power draw happens only briefly when accelerating to the high speed slewing mode from a standing start. Normal power draw with a well-balanced payload is generally considerably less than half the maximum draw. The mount comes with a car battery cord to operate from the cigarette lighter plug of your car or from a rechargeable 12VDC battery pack. The 17 amp hour capacity Celestron Power Tank #4517V is recommended and will operate the mount all night long without danger of running out of power.

    Specially designed power management electronics deliver constant regulated power to the motor so that it is capable of driving the mount even when your scope not perfectly balanced. This allows the CGX-L  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.

    Polar alignment: To make a casual no-tool polar alignment for visual use quick and easy, there’s a latitude scale with large ergonomically-friendly altitude and azimuth adjustment knobs. If serious long exposure astrophotography is in your plans, the special All-Star Polar Alignment software described below allows you to choose any bright alignment star for a software-assisted alignment of the mount’s polar axis, even if you can't see the North Star.  The mount also has upgraded adjustments for Latitude and Azimuth.  Large one hand knobs make moving a full loaded mount head a dream with a simple twist of the wrist.

    Counterweight: The CGX-L  mount comes with one 22 pound counterweight. The counterweight locks in place on the 5 pound steel counterweight shaft with a single hand-tighten knob, making it easy to rebalance your scope in right ascension if you add heavy photographic accessories. If needed, optional counterweights are available to balance very heavy loads.

    Heavy duty tripod: The CGX-L mount’s adjustable height Super HD tripod has 2.75” diameter stainless steel legs. The height adjustment leg locks are on the inside of the tripod legs to keep them from snagging on clothing in the dark. 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. The upper leg brace forms a convenient tray that holds eyepieces and accessories, as well as a slot to hold your smart phone or tablet, to keep them up out of the dew-soaked grass.  This tray is a new design that will allow you to keep it attached while you fold the legs up.

    Mounting an optical tube: Optical tubes are installed on the CGX-L mount using a slot on the mount head that accepts a Celestron CGE-style/Losmandy D-plate dovetail or a Celestron AVX/CG5/Vixen slide bar. This allows the optical tube to be quickly and precisely balanced fore and aft on the mount in declination, eliminating the need for an extra counterweight to balance a camera or other accessories. Setup and takedown times are exceptionally fast, with large hand-tighten knobs holding the optical tube in place.

    Mount weight: The CGE Pro mount weighs in at 121 pounds. The equatorial head is 47 pounds. The tripod weighs 47 pounds. The supplied counterweight weighs 22 pounds, while the thread-in counterweight shaft weighs 5 pounds. The new ergonomic handles makes it much easier for a single person to move and break down the mount in the field with ease.

    NexStar computer hand control: The NexStar computer hand control of the CGX-L mount has a built-in database of more than 40,000 stars, deep space objects, and solar system objects it can locate for you. These include the complete RNGC, Messier, Caldwell, IC, and Abell catalogs; selected SAO stars; the planets, the Moon, and others. The 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; non-planetary solar system objects; and asterisms. It contains enough fascinating objects to keep you busy observing for the rest of your life.

    You can also store and edit the right ascension and declination of 100 objects of your own choosing, such as the comet and asteroid coordinates published monthly in Astronomy and Sky & Telescope magazines. The computer control can quickly find any of those objects at your command, and track them with high accuracy for visual observing or astrophotography.

    All of the database and scope operation information is displayed on a double line, 16-character, liquid crystal display on the hand control. This display leads you through the steps necessary to line up the scope on the sky, locate objects, control scope functions like the brightness of the hand control display, and much more. It shows you basic information about the object being viewed (such as the object’s name, catalog designation, type, magnitude, and so forth). In addition to this basic information, there is enhanced information on over 200 of the most note-worthy objects. The display can also show you the right ascension and declination coordinates at which the scope is aimed.

    Alignment on the sky and go-to accuracy: No polar alignment finderscope is available for the CGX-L mount, nor is any needed. A unique Celestron All-Star Polar Alignment program built into the NexStar hand control helps you do a very precise polar alignment in mere minutes for long exposure astrophotography. It works in both northern and southern hemispheres.

    To accurately polar align your scope, first do a reasonably-accurate mechanical alignment of the mount on the celestial pole by eye. To make this initial alignment quick and easy, there’s a latitude scale and fine adjustment controls in both altitude and azimuth. Next, use the mount’s standard two-star alignment method to align your scope on the sky. Select a suitable bright star from the NexStar hand control’s data base and slew your telescope to the star. A star near the meridian and close to the celestial equator will give the most accurate alignment results. Then, press the Align button on the hand control and select Polar Align: Align Mount from the hand control menu. Your telescope will re-slew to the alignment star and ask you to center it in the eyepiece in order to “Sync” on the star. After you sync on the star, your telescope will automatically slew to the position that the star should be at if your mount was accurately polar aligned. Use the mount’s altitude and azimuth adjustment knobs to place the star in the center of the eyepiece and press the Align button. That’s all there is to it! Your CGE Pro mount is now accurately aligned on the celestial pole.

    Although the telescope’s tracking may be very good after alignment, pointing accuracy may need to be improved (particularly if you are trying to located small objects on a CCD chip), depending on how close your initial mechanical alignment was on the pole, and by much the mount had to be moved during polar alignment. If that’s the case, you can easily update your telescope’s star alignment in a minute or two if necessary.

    Once polar aligned, several different sky alignment methods are built into the NexStar computer to line up the scope on the celestial sphere, allowing you to choose a level of computer accuracy in automatically finding objects with which you are comfortable. These include 2-Star Align, Solar System Align, Last Alignment, Quick Align, and 1-Star Align,

    With just a standard hand control alignment, the CGE Pro computer has the ability to center a star in your telescope’s eyepiece or on a CCD chip to within 5 arc minutes. Using the NexStar computer's advanced pointing features (such as Calibration Stars, Sync, and Precise Go-To) further improves the pointing accuracy to as low as 1 arc minute in the desired region of the sky. The high precision pointing subroutine (Precise Go-To) in the computer lets you point accurately at objects that you want to photograph that are too dim to be seen though the scope. Other software features include: database filter limits, a mount hibernate mode, and user-defined slew limits.

    GPS compatible: In addition, the NexStar computer hand control is GPS-compatible (using an optional inexpensive CN16 GPS module) for full GPS (Global Positioning System) satellite accuracy. Once the scope is approximately polar aligned, the 16-channel CN16 GPS system uses signals from government satellites to calculate the scope’s location on earth with an accuracy measured in meters. The system also calculates the current time based on the split second accuracy of the GPS time signals. After the CN16 quickly completes these calculations and enters the information into the computer control for you automatically, the computer then orients the scope with the sky, slews to a pair of guide stars, asks you to confirm that the stars are in the center of the field (and center them if they’re not precisely aligned), and then starts finding and tracking over 40,000 objects for you at your command. With the CGX-L  go-to mount and the CN16, orienting the scope in time and space on earth and aligning your telescope on the sky becomes almost as easy a task as simply turning on your CGX-L  mount.

  • Two-year warranty: All Celestron go-to telescopes have a two-year warranty, double that of competitive go-to scopes.
Highest Useful Magnification:
This is the highest visual power a telescope can achieve before the image becomes too dim for useful observing (generally at about 50x to 60x per inch of telescope aperture). However, this power is very often unreachable due to turbulence in our atmosphere that makes the image too blurry and unstable to see any detail.

On nights of less-than-perfect seeing, medium to low power planetary, binary star, and globular cluster observing (at 25x to 30x per inch of aperture or less) is usually more enjoyable than fruitlessly attempting to push a telescope's magnification to its theoretical limits. Very high powers are generally best reserved for planetary observations and binary star splitting.

Small aperture telescopes can usually use more power per inch of aperture on any given night than larger telescopes, as they look through a smaller column of air and see less of the turbulence in our atmosphere. While some observers use up to 100x per inch of refractor aperture on Mars and Jupiter, the actual number of minutes they spend observing at such powers is small in relation to the number of hours they spend waiting for the atmosphere to stabilize enough for them to use such very high powers.
650x
Visual Limiting Magnitude:
This is the magnitude (or brightness) of the faintest star that can be seen with a telescope. The larger the number, the fainter the star that can be seen. An approximate formula for determining the visual limiting magnitude of a telescope is 7.5 + 5 log aperture (in cm).

This is the formula that we use with all of the telescopes we carry, so that our published specs will be consistent from aperture to aperture, from manufacturer to manufacturer. Some telescope makers may use other unspecified methods to determine the limiting magnitude, so their published figures may differ from ours.

Keep in mind that this formula does not take into account light loss within the scope, seeing conditions, the observer’s age (visual performance decreases as we get older), the telescope’s age (the reflectivity of telescope mirrors decreases as they get older), etc. The limiting magnitudes specified by manufacturers for their telescopes assume very dark skies, trained observers, and excellent atmospheric transparency – and are therefore rarely obtainable under average observing conditions. The photographic limiting magnitude is always greater than the visual (typically by two magnitudes).

15.3
Focal Length:
This is the length of the effective optical path of a telescopeor eyepiece (the distance from the main mirror or lens where the lightis gathered to the point where the prime focus image is formed). Focallength is typically expressed in millimeters.

The longer the focallength, the higher the magnification and the narrower the field of viewwith any given eyepiece. The shorter the focal length, the lower themagnification and the wider the field of view with the same eyepiece.

3910mm
Focal Ratio:
This is the ‘speed’ of a telescope’s optics, found by dividing the focal length by the aperture. The smaller the f/number, the lower the magnification, the wider the field, and the brighter the image with any given eyepiece or camera.

Fast f/4 to f/5 focal ratios are generally best for lower power wide field observing and deep space photography. Slow f/11 to f/15 focal ratios are usually better suited to higher power lunar, planetary, and binary star observing and high power photography. Medium f/6 to f/10 focal ratios work well with either.

An f/5 system can photograph a nebula or other faint extended deep space object in one-fourth the time of an f/10 system, but the image will be only one-half as large. Point sources, such as stars, are recorded based on the aperture, however, rather than the focal ratio – so that the larger the aperture, the fainter the star you can see or photograph, no matter what the focal ratio.

f/11
Resolution:
This is the ability of a telescope to separate closely-spaced binary stars into two distinct objects, measured in seconds of arc. One arc second equals 1/3600th of a degree and is about the width of a 25-cent coin at a distance of three miles! In essence, resolution is a measure of how much detail a telescope can reveal. The resolution values on our website are derived using the Dawes’ limit formula.

Dawes’ limit only applies to point sources of light (stars). Smaller separations can be resolved in extended objects, such as the planets. For example, Cassini’s Division in the rings of Saturn (0.5 arc seconds across), was discovered using a 2.5” telescope – which has a Dawes’ limit of 1.8 arc seconds!

The ability of a telescope to resolve to Dawes’ limit is usually much more affected by seeing conditions, by the difference in brightness between the binary star components, and by the observer’s visual acuity, than it is by the optical quality of the telescope.

0.32 arc seconds
Aperture:
This is the diameter of the light-gathering main mirror or objective lens of a telescope. In general, the larger the aperture, the better the resolution and the fainter the objects you can see.
14"
Weight:
The weight of this product.
243 lbs.
Heaviest Single Component:
The weight of the heaviest component in this package.
75 lbs.
Telescope Type:
The optical design of a telescope.  Telescope type is classified by three primary optical designs (refractor, reflector, or catadioptric), by sub-designs of these types, or by the task they perform.
EdgeHD
 
Based on Astronomy magazine’s telescope "report cards", scopes of this size and type generally perform as follows . . .
Terrestrial Observation:
Observing terrestrial objects (nature studies, birding, etc.) is usually possible only with refractor and catadioptric telescopes, and convenient only when the scope is on an altazimuth mount or photo tripod. Most reflectors cannot be used for terrestrial observing. Scopes with apertures under 5" to 6" are generally most useful for terrestrial observing due to atmospheric conditions (heat waves and mirage, dust, haze, etc.) that degrade the image quality in larger scopes. 
No
Lunar Observation:
Visual observation of the Moon is possible with any telescope. Larger aperture scopes will provide more detail than smaller scopes, thereby getting a higher score in this category, but may require an eyepiece filter to cut down the greater glare from the Moon's sunlit surface so small details can be seen more easily. Lunar observing is more rewarding when the Moon is waxing or waning as the changing sun angle casts constantly varying shadows to reveal craters and surface features by the hundreds.  
Very Good
Planetary Observation:
Very Good
Binary and Star Cluster Observation:
Very Good
Galaxy and Nebula Observation:
Very Good
Photography:
Yes
Terrestrial Photography:
Photographing terrestrial objects (wildlife, scenery, etc.) is usually possible only with refractor and catadioptric telescopes, and convenient only when the scope is on an altazimuth mount or photo tripod. Most reflectors cannot be used for terrestrial photography. Scopes with focal ratios of f/10 and faster and apertures under 5" to 6" are generally the most useful for terrestrial photography due to atmospheric conditions (heat waves and mirage, dust, haze, etc.) that degrade the image quality in larger scopes.
No
Lunar Photography:
Photography of the Moon is possible with virtually any telescope, using a 35mm camera, DSLR, or CCD-based webcam (planetary imager). While an equatorial mount with a motor drive is not strictly essential, as the exposure times will be very short, such a mount would be helpful to improve image sharpness, particularly with webcam-type cameras that take a series of exposures over time and stack them together. Reflectors may require a Barlow lens to let the camera reach focus. 
Yes
Planetary Photography:
Yes
Star Cluster / Nebula / Galaxy Photography:
Yes
Warranty:
2 years
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General Accessories
Drive Motors and Drive Accessories (1)
Power Tank 17 Amp-hour 12V DC rechargeable battery
by Celestron
Quantity:  
$129.95 
Visual Accessories
Eyepieces (1)
55mm Plössl
by TeleVue
Quantity:  
$239.01 
  • Starbright XLT fully multicoated Fastar-compatible EdgeHD high definition 14” f/11 optics
  • Go-to fully computerized CGE Pro German equatorial mount with three 22 lb. counterweights
  • Heavy duty adjustable height metal tripod
  • 40,000+ object computer hand control
  • PPEC (Permanent Periodic Error Compensation)
  • RS-232 port for connection to a PC
  • NexRemote remote telescope control software with RS-232 cable
  • CCD autoguider port
  • 9 x 50mm finderscope
  • 2" star diagonal with 1.25” adapter
  • 2” 23mm Axiom 82° field eyepiece (170x)
  • 12V DC car battery cord
  • Dust covers.
Documents
CGE Pro Series Manual 3Mb(s)
Videos
Celestron® CGE Pro™ Computerized German Equatorial Mount
Celestron EdgeHD Optics
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CGX-L 1400HD 14” SCT with EdgeHD High Defintion Optics 12077

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CGX-L 1400HD 14” SCT with EdgeHD High Defintion Optics 12077
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Our Product #: CGXL14HD
Manufacturer Product #: 12077
Price: $8,499.00  FREE ground shipping - Click for more info
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Clear skies,
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The new Celestron CGX-L 1400HD telescope puts the immense light-gathering of 14” aplanatic EdgeHD high definition/high contrast optics on a CGX-L go-to German equatorial mount to give you a high performance telescope that can fulfill your every visual and imaging desire . . .





. . . our 37th year