User manual
Celestron CGX 1100 11" f 2.2

User Manual for Celestron CGX 1100 11" f 2.2 Rowe-Ackermann Schmidt GoTo EQ Astrograph

• Product category: Catadioptrics (Cassegrains) Celestron
• Brand: Celestron
• Description and content of package
• Technical information and basic settings
• Frequently asked questions – FAQ
• Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
• Authorized service for Celestron Catadioptrics (Cassegrains)

Product description

• 11" f/2.2 Rowe-Ackermann Schmidt Astrograph (OTA only)
  • CGX Intro by Bryan Cogdell
  • Rowe-Ackermann Schmidt Astrograph Tour
  The 11" f/2.2 Rowe-Ackermann Schmidt Astrograph from Celestron is specifically designed for astrophotography and astroimaging with a large 11" aperture and fast f/2.2 focal ratio. The optical tube assembly (OTA) is being offered by itself without a mount and comes with a Celestron CGEM-style dovetail plate for use on compatible mounts and tripods. Using 4-element rare-earth optical glass lenses ensures accurate color rendition and eliminates aberrations such as coma and field curvatures. The improved StarBright XLT multi-coating system, which includes anti-reflection coatings on the lenses and highly reflective coatings on the mirrors, increases light transmission throughout the entire optical path. A 12V MagLev fan reduces cooldown time and provides optimal airflow through the optical tube while filtering harmful dust from the interior.The 43.3mm imaging circle is made to cover today's large DSLR and CCD imaging sensors to capture full-frame shots without vignetting, while a fast focal ratio reduces exposure times without sacrificing image quality and gives the user more time for multiple shots of the same object for layering or with different filters. A custom-designed FeatherTouch micro focus system has a 10:1 reducer with linear brass focuser bearing to enable very precise focusing to clearly resolve topographic details on the Moon or split double stars and reveal details of most other celestial objects in between. Since this OTA is designed as an imaging scope, a 42mm T-thread camera adapter and 48mm camera adapter are provided. Other adapters are available if required.
  Optical Performance
  • • 11"-diameter aperture
    • 620mm focal length
    • Fast f/2.2 focal ratio
    • Proprietary StarBright XLT fully multi-coated optical system
    • 4-element rare-earth glass for true color rendition without aberrations across the entire field of view
    • 43.3mm image circle captures pinpoint stars on today's large CCD and DSLR imaging chips
    • Resolution: 0.5 arcsec (Rayleigh), 0.41 arcsec (Dawes)
  StarBright XLT Coating System
  • • Multi-layer mirror coatings made from layers of aluminum, SiO2 (silicon dioxide), and TiO2 (titanium dioxide)
    • Reflectivity is flat across the light spectrum, for both astrophotography/astroimaging and visual observation
    • Multi-layer anti-reflective coatings made from layers of MgF2 (magnesium fluoride) and HfO2 (hafnium dioxide)
    • High-transmission water white glass corrector lens with 97.4% light transmission
  Focuser
  • • Linear brass focuser bearing reduces image shift
    • Dual-speed 10:1 FeatherTouch micro focus knob provides precise focusing
  Construction Details
  • • 42mm T-thread and M48 camera adapters included for attachment to CCD and DSLR cameras
    • Heavy duty CGEM dovetail plate
    • 12 VDC MagLev fan reduces cooldown time, provides airflow, and filters dust
  UPC: 050234910750
• CGX GoTo EQ Mount with Tripod Celestron's CGX GoTo EQ Mount with Tripod improves on their venerable CGEM platform to provide users with a heavy-duty research-quality mount for larger optical tube assemblies (OTAs), accessories, and imaging rigs. Engineered to carry a 55-pound payload and outfitted with high-torque motors with a heavy-duty belt-drive system to improve tracking stability and reduce backlash, it is able 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. To provide a stable platform for the mount and your OTA, a heavy-duty stainless steel tripod is included that sports large 2"-diameter legs, an accessory tray that doubles as a stabilizer, and an adjustment range from 47.25 to 77.5" including the head.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 custom user-defined objects and filters for custom object 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 and invaluable to new users and experienced stargazers.
  Mount
  • • German equatorial mount
    • 55 lb payload capacity
    • 3-65° 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
  • • Features:
    • 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
    • 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
    • Functions
    • 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
  Tripod
  • • Stainless steel legs
    • Adjustable-height 47.25-77.5", including head
    • Heavy-duty 2" diameter
    • Wide leg stance provides greater stability, especially on uneven ground
    • Accessory/eyepiece holder tray that doubles as a leg spreader/lock
    • Weight: 19.2 pounds
  UPC: 050234153096

• 42mm T-Adapter

• 48mm Camera Adapter

• Limited 2-Year Warranty

• NexStar+ Hand Control (EQ)

2 x
• 11 lb Counterweight for Advanced VX

• Stainless Steel Tripod

• Counterweight Shaft

• 12 VDC Car/Vehicle Power Adapter

• Limited 2-Year Warranty

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Technical parameters

• 11" f/2.2 Rowe-Ackermann Schmidt Astrograph (OTA only)

  Optical Design	RASA
  Aperture	280 mm / 11"
  Focal Length	620 mm
  Focal Ratio	f/2.2
  Focuser	Internal
  Diagonal	None
  Finderscope	None
  Mounting System	Losmandy Style
  Optical Tube Dimensions	Length: 33" / 83.8 cm

  Batteries	None
  Adapter	12 VDC
  GPS	None
  Wi-Fi	None
  Weight	43.0 lb / 19.5 kg

  Box Dimensions (LxWxH)	39.0 x 20.0 x 19.0"

• CGX GoTo EQ Mount with Tripod

  Mount Type	Equatorial
  Load Capacity	55.0 lb / 24.9 kg
  Motor	Dual-axis servo with heavy-duty belt-drive system
  GoTo Capability	Yes, NexStar+ hand controller
  Latitude Adjustment Range	3 - 65°
  Polar Axis Scope	None
  Tripod	Adjustable height of 47.25 - 77.5" / 120 - 197 cm, including head Stainless steel 2"-diameter legs
  Power Source	12 VDC, 4 A
  Weight	Mount head: 44.0 lb / 20.0 kg Tripod: 19.2 lb / 8.7 kg

  Box Dimensions (LxWxH)	46.5 x 13.8 x 13.0"

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