Celestron C6-S GT XLT Advanced Series 6" Schmidt-Cassegrain Telescope

Celestron C6-S: Picture 1 thumbnail Celestron C6-S: Picture 2 thumbnail Celestron C6-S: Picture 3 thumbnail Celestron C6-S: Picture 4 thumbnail Celestron C6-S: Picture 5 thumbnail Celestron C6-S: Picture 6 thumbnail

List Price: $1,907.95

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About Celestron C6-S

The Advanced C6-SGT 6" Schmidt-Cassegrain features a precision optical system with 1500mm focal length (f/10) and offers 40% more light gathering than a 5" telescope.

All C6-SGT models come standard with Celestron's StarBright® XLT coatings at no extra cost.

Mounted on the Advanced GT Series computerized mount, this telescope has some high performance software and hardware features. Operated by our proven NexStar® computer control technology, the telescope has a 40,000+ object database with 100 user-definable objects and expanded information on over 200 objects. 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; solar system objects and asterisms

Using the RS-232 communication port on the hand control, you can control the telescope via a personal computer and our new flash upgradeable hand controls allow you to update your telescope's operating software via the Internet. An Autoguider port is also included for astrophotography. No matter at what level you are starting out, this precision instrument will satisfy your needs both visually and photographically.

CG-5 Mount - Precision engineered for stability
The German Equatorial mount has precision worm gears on both axes for extremely smooth stability. The key element that makes this system the most stable in its class is the NEW heavy-duty tripod with larger and more substantial legs that offer excellent damping characteristics for more stable views. The CG-5 also has a convenient latitude scale for easier alignment and an optional polar finder scope for the ultimate in precision alignments

Celestron C6-S Features

  • 6" Schmidt-Cassegrain telescope
  • StarBright XLT high transmission coatings
  • 6x30 finderscope to help accurately find objects
  • Heavy Duty (CG-5GT) computerized German Equatorial mount
  • Ultra sturdy 2" diameter steel tripod with accessory tray
  • Star diagonal provides more comfortable viewing position when observing objects that are high in the sky
  • The SkyX First Light Edition astronomy software with a 10,000 object database, printable sky maps and 75 enhanced images
  • Computerized Mount FeaturesProven NexStar computer control technology
  • 40,000 object database with over 100 user-definable objects and expanded information on over 200 objects
  • 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; solar system objects and asterisms
  • DC Servo motors with encoders on both axes
  • Flash upgradeable hand control software and motor control units for downloading product updates over the Internet
  • Autoguider port for long exposure astrophotography
  • Double line, 16-character Liquid Crystal Display Hand Control with backlit LED buttons for easy operation of goto features
  • Compatible with optional NexRemote telescope control software, for advanced control of your telescope via computer
  • RS-232 communication port on hand control to control the telescope via a personal computer
  • GPS-compatible with optional SkySync GPS Accessory (93969)

Celestron C6-S Specifications

Optical Design
Aperture (mm)
150 mm (5.91 in)
Focal Length
1500 mm (59 in)
Focal Ratio
Focal Length of Eyepiece 1 (mm)
25 mm (0.98 in)
Magnification of Eyepiece 1
60 x
Star Diagonal
Mount Type
CG-5 Equatorial
Accessory Tray
Highest Useful Magnification
354 x
Lowest Useful Magnification
21 x
Limiting Stellar Magnitude
Resolution (Rayleigh)
0.93 arc seconds
Resolution (Dawes)
0.77 arc seconds
Light Gathering Power
459 x
Apparent Field of View
.83 Degree
Linear Field of View (@1000 yds)
44 ft (13 m)
Secondary Mirror Obstruction
2.2 in (56 mm)
Secondary Mirror Obstruction by Diameter
Secondary Mirror Obstruction by Area
Optical Coatings
StarBright XLT
Optical Tube Length
16 in (406 mm)
Total Telescope Kit Weight
52 lbs (24 kg)
Weight of Counterweights
1 - 11 lbs
Slew Speeds
3Degree/second max
Tracking Rates
Sidereal, Solar and Lunar
Tracking Modes
EQ North
Alignment Procedures
AutoAlign, 2-Star Alignment, Quick Align
Communication Ports
RS-232 communication port on hand control
Computer Hand Control
Double line, 16 character Liquid Crystal Display; 19 fiber optic backlit LED buttons
40,000 objects, 100 user defined programmable objects.Enhanced information on over 200 objects
2-year Telescope Warranty

Questions & Answers Powered by TurnTo®

Questions about this item:

Russell N  How do you know the best position for the telescope counterweight?
BRIAN R  Quite simple Russell. Just adjust the weight until it balances out your scope. I usually give the scope a gentle push from side to side and if it remains still once it's come to a halt, you are good to go... Good luck
douglas k  What is the wall 12 volt electrical outlet to plug into for this telescope ?
Andrew R  How would this scope be for astrophotography? I'm planning to buy for someone using an Olympus OM-D EM 5 16 mp digital mirror less camera. Thanks
MICHAEL D  hi i actually tried both scopess. the iOptron 152 and the celestron 6". i have poor eyesight and found that both were too dark for me to do much viewing. I'm currently using a Stellarvue 102ed with mush better results. 4" of cleara apperture. i hope this helps
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