Celestron EdgeHD 11" f/10 Aplanatic Schmidt-Cassegrain EQ GoTo Telescope

BH #CECGX1100HDK • MFR #12057
Celestron EdgeHD 11" f/10 Aplanatic Schmidt-Cassegrain EQ GoTo Telescope
Key Features
  • 11" (280mm) Schmidt-Cassegrain OTA
  • 2800mm Focal Length, f/10 Focal Ratio
  • StarBright XLT Optical Coating System
  • EdgeHD Aplanatic Field-Flattener Design
Celestron combines a large-aperture SCT optical tube with a precise low-profile motorized computer-controlled GoTo equatorial mount and sets them both on a heavy-duty stainless steel tripod to give you a complete near-research-grade astronomical observation and astrophotography rig—the EdgeHD 11" f/10 Aplanatic Schmidt-Cassegrain EQ GoTo Telescope. You also get the appropriate counterweights to properly balance it all, plus some visual accessories that allow you to start observing right out of the box.
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Celestron EdgeHD 11 Overview

  • 1Description
  • 2Celestron EdgeHD 11" f/10 Aplanatic Schmidt-Cassegrain Telescope (OTA Only)
  • 3Celestron CGX GoTo EQ Mount Head
  • 4Celestron CGX Tripod with Counterweights
  • 5Celestron 11 lb Counterweight for the CGEM EQ Mount

Celestron combines a large-aperture SCT optical tube with a precise low-profile motorized computer-controlled GoTo equatorial mount and sets them both on a heavy-duty stainless steel tripod to give you a complete near-research-grade astronomical observation and astrophotography rig—the EdgeHD 11" f/10 Aplanatic Schmidt-Cassegrain EQ GoTo Telescope. You also get the appropriate counterweights to properly balance it all, plus some visual accessories that allow you to start observing right out of the box.

Celestron EdgeHD 11" f/10 Aplanatic Schmidt-Cassegrain Telescope (OTA Only)

Engineered to deliver sharp and clear distortion-free views, the Celestron EdgeHD 11" f/10 Aplanatic Schmidt-Cassegrain Telescope is an ideal choice for observation, astrophotography, and imaging objects within or beyond our solar system. It features an aplanatic Schmidt-Cassegrain optical system consisting of a corrector plate, a spherical primary mirror, and a secondary mirror along with a set of field-flattening lenses integrated into the baffle tube. Complementing the EdgeHD system is the proprietary StarBright XLT optical coating system, which improves light transmission and reflectivity across the entire visual spectrum. The combination of EdgeHD and StarBright XLT produces bright and clear high-resolution images with true color rendition across the entire field of view without distortion, aberrations, or off-axis comas.

Optimized for imaging, the internal focusing system features mirror support clutches to ensure proper alignment and mirror locks to avoid accidental defocusing during long-exposure astrophotography. The optical tube is outfitted with an oversized 2" visual back to ensure large imaging sensors are completely covered to avoid vignetting. For visual observations, a 2" star diagonal is included along with a 23mm wide-angle eyepiece that yields a respectable 122x power. A reducer adapter is provided to allow the use of smaller and more common 1.25" eyepieces and accessories. The EdgeHD 11 is offered here without a mount or tripod for users who already have a reliable support system and are looking to upgrade or add to their existing gear, but it comes with a large CGE dovetail plate that is compatible with Losmandy saddles.

Optical Tube

  • 11" (280mm) aperture
  • f/10 focal ratio
  • 2800mm effective focal length
  • Aplanatic Schmidt-Cassegrain optical design
  • EdgeHD field-flattener aplanatic design eliminates spherical aberration, field curvature, and off-axis star coma to improve resolution, sharpness, and clarity across the entire field of view, especially at the edges
  • Diffraction-limited SCHOTT glass reduces internal light loss to improve color, clarity, and sharpness
  • StarBright XLT optical coatings
  • Flexible tension clutches hold the primary mirror in place to reduce image shift without putting any force or pressure on the mirror assembly, keeping subjects centered
  • Internal mirror locks prevent accidental adjustment to focusimportant during long-exposure astrophotography
  • Integrated 95-micron mesh filter allows hot air to be released from behind the primary mirror without dust getting in, to prevent mirror distortion due to uneven surface temperatures
  • Resolution: 0.5 arcsec (Rayleigh); 0.42 arcsec (Dawes)
  • Secondary mirror obstruction: 3.75" (95 mm); 34% by diameter; 12% by area

StarBright XLT System

  • Maximizes light transmission through optical path
  • Improves color rendition, contrast, sharpness, resolution, and brightness
  • Broadband system provides flat wavelength transmission across the entire visual spectrum
  • Multi-layer mirror coatings with layers of aluminum, SiO2 (quartz), and TiO2 (titanium dioxide)
  • Multi-layer anti-reflective corrector plate coatings with layers of MgF2 (magnesium fluoride) and HfO2 (hafnium dioxide); hafnium has a wider band-pass than the commonly used titanium
  • High-transmission water white glass corrector plate limits light loss due to internal absorption


  • OTA only; mount and tripod required for proper use
  • Large CGE (Losmandy-style) dovetail plate

Included Accessories

Visual Back:

  • Standard Schmidt-Cassegrain telescope (SCT) threads
  • 2" eyepiece/accessory holder
  • Use for prime focus or projection astrophotography with optional adapters


  • Luminos-series wide-angle
  • 82° field of view
  • 2"-diameter barrel
  • Accepts most 2" eyepiece filters
  • 23mm focal length yields 122x power
  • Parfocal with all Luminos eyepieces, allowing it to be changed out with other Luminos eyepieces without having to adjust the focus
  • Retractable eyecup for use with or without eyewear

Reducer adapter:

  • 2"-to-1.25" reducer adapter allows the use of smaller eyepieces and accessories in visual back or diagonal


  • 90° angle puts head in comfortable viewing position
  • Threaded for direct connection to OTA without the need for the visual back
  • 2" eyepiece/accessory holder
  • Star diagonal corrects image horizontally, but not vertically


  • Low 9x magnification preserves wide field of view to more easily find alignment or guide stars
  • Large 50mm aperture helps to see dimmer objects and stars for easier star-hopping navigation
UPC: 050234105095

Celestron CGX GoTo EQ Mount Head

Celestron's CGX GoTo EQ Mount Head improves on their venerable CGEM platform to provide users with a heavy-duty research-quality mount for large optical tube assemblies (OTAs), accessories, and imaging rigs. Engineered to carry a 55-pound payload, it has high-torque motors and heavy-duty belt-drive system to improve tracking stability and reduce backlash which enable it to smoothly and accurately track near- and deep-sky objects for long periods of time. Its Vixen/Losmandy dual dovetail saddle makes the mount compatible with most plates in use today.

The brain of the CGX EQ is the NexStar+ computer controller. Equipped with a database of 40,000 objects, including the planets, stars, nebulae, galaxies, and the complete Messier catalog, it can also be programmed with up to 100 user-defined objects and filters for custom lists. Its intuitive menu-driven user interface allows you to observe the heavens with nine slew speeds and three tracking rates, plus anti-backlash compensation and Permanent Periodic Error Correction (PPEC) for smoother movements in the motors and improved tracking over time. Features such as guided tours, extended information on 200 popular objects, and multiple alignment options make the NexStar+ controller easy to use for new users and experienced stargazers.


  • German equatorial mount, when properly polar aligned, provides precise tracking on the Right Ascension axis allows the optical tube to follow objects without field rotation—making it ideal for astrophotography and imaging
  • 55 lb payload capacity
  • 3 to 65° latitude adjustment range
  • 20° of additional tracking past the meridian provides greater usability
  • Dual-axis servo motors with optical encoders for smooth tracking and quiet operation
  • High-torque motors provide smooth tracking and slewing for heavy OTAs
  • Internal belt-drive system provides smooth, vibration-free tracking while minimizing backlash
  • Spring-loaded brass worm wheel and stainless steel worm gear reduce friction and improve gear meshing
  • Limit sensors automatically shut off slewing or tracking before reaching the hard stop fail-safe
  • Internal hard stops for both axes prevent cable tension and tripod strike
  • Autoguider port for making corrections while astroimaging
  • Dual Vixen/Losmandy dovetail saddle, compatible with CG-5 and CGE bars
  • Long clutch levers make tightening and loosening of clutches easier for manual movement
  • Internal "Real Time Clock" keeps time and site information saved when power is turned off
  • Internal cables/wires for snag-free operation
  • Runs on included 12 VDC, 4A car/vehicle power supply

NexStar+ Hand Controller

  • Intuitive menu-driven user interface
  • Nine slew speeds: 2x, 4x, 8x, 16x, 32x, 0.3°/sec, 1.0°/sec, 2°/sec, 4°/sec
  • Three tracking rates: Sidereal, Lunar, and Solar
  • Anti-backlash correction: Trains out intrinsic play in gears for smoother movement and tracking
  • Permanent Periodic Error Correction (PPEC): Improves tracking precision for long-exposure astrophotography and imaging
  • Alignment options: One or Two-star, Solar system, Quick, and Last
  • Sky Tour: Based on location, date, and time, the system shows the best objects in the sky and automatically slews to them
  • Object info: Provides useful information about the selected object such as magnitude and constellation; includes extended information about 200 popular objects
Physical characteristics:
  • 2-line, 18-character LCD window with red backlighting for comfortable viewing without affecting night-adjusted vision
  • 19 function keys, backlit in red
  • Mini-USB port: Connect to a computer, for use with software programs for point-and-click slewing capability and updating firmware via PC

NexStar+ Database

  • 40,000-object database
  • 400 user-defined objects for customization
  • Filters for creating custom object lists
  • Solar System: All seven planets plus the moon, sun, and Pluto
  • Custom lists of all the brightest stars, double stars, variable stars, and asterisms
  • Custom lists of all the best galaxies, nebulae, and clusters, as well as the complete Messier catalog and select NGC objects
UPC: 050234153096

Celestron CGX Tripod with Counterweights

Designed to support their CGX equatorial mount, the Celestron CGX Tripod has large 2" diameter legs to provide a solid and sturdy platform for the mount head plus an optical tube assembly and accessories. To accommodate a variety of users, optical tube styles, and viewing positions, the legs can adjust from 47.25 to 77.5" and terminate with spikes to provide solid footing. Graduated markings on the lower leg sections enable you to accurately repeat settings, saving setup and leveling time if you observe from the same location every night. Adding greater stability and vibration suppression, the center accessory tray acts as a leg spreader to lock them in-place while providing a convenient place to keep eyepieces, filters, or your phone safe and close to hand. Two 11-pound counterweights come in the box to assist in properly balancing your OTA on the mount head.

UPC: 050234934848

Celestron 11 lb Counterweight for the CGEM EQ Mount

Use the Celestron 11 lb Counterweight by itself or with other weights to balance your OTA and accessories on Celestron CG-5, CGEM, CG-4 mounts; or any similar mount with a 0.75" (19mm) center bore hole. A large thumbscrew allows you to lock the weight anywhere along the counterweight shaft to allow for precise balance.

UPC: 050234942034

Celestron EdgeHD 11" f/10 Aplanatic Schmidt-Cassegrain Telescope (OTA Only) Specs

Optical DesignAplanatic Schmidt-Cassegrain
Aperture11.0" / 279.4mm
Focal Length2800mm
Focal Ratiof/10
Eyepiece Barrel Diameter2.0"
1.25" with included reducer
Diagonal90° star
2" snout and eyepiece holder
Mount TypeCGE dovetail plate
Compatible with Losmandy-style saddles
Power SourceNone
Optical Tube Length24.0" / 61.0 cm
Weight28.0 lb / 12.7 kg
Packaging Info
Package Weight45 lb
Box Dimensions (LxWxH)30 x 19 x 18"

Celestron CGX GoTo EQ Mount Head Specs

Mount TypeMotorized; German Equatorial Dual Fork
GoTo CapabilityYes, NexStar+ Hand Controller
Payload Capacity55 lb / 24.9 kg
MotorDual Axis
Tracking RatesLunar, Sidereal, Solar
Latitude Adjustment3 to 65°
Polar Axis ScopeNone
Power SourceVehicle Adapter (Included)
DC Input Power12 VDC
MountingTo Optical Tube Assembly: Dual Losmandy-/Vixen-Type Saddle
DimensionsNot Specified by Manufacturer
Weight44 lb / 20 kg (Mount)
Packaging Info
Package Weight57.1 lb
Box Dimensions (LxWxH)27.13 x 21.25 x 14.5"

Celestron CGX Tripod with Counterweights Specs

Minimum Height47.25" / 1200.15 mm
Maximum Height77.5" / 1968.5 mm
Material of ConstructionStainless Steel
Leg Diameter2.0" / 50.8 mm
Weight19.2 lb / 8.7 kg
Packaging Info
Package Weight48.55 lb
Box Dimensions (LxWxH)46 x 13.11 x 12.69"

Celestron 11 lb Counterweight for the CGEM EQ Mount Specs

Counterweight Bar0.75" / 19.0 mm, diameter
Weight11.0 lb / 5 kg
Packaging Info
Package Weight12.69 lb
Box Dimensions (LxWxH)10.9 x 8.9 x 3.85"

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