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Celestron - C6-RGT 150mm Refractor Telescope


Discontinued Product

Manufactured by: Celestron

Celestron C6-RGT Refractor Telescope


CELESTRON - C6-RGT 150mm Refractor Telescope

The Celestron C6-RGT refractor has a light gathering power 6x more powerful than a standard 60mm. The optical tube is a 1200mm focal length (f/8) refractor mounted on a German Equatorial mount. Include accessories are a 9x50 finderscope, 20mm Plossl 1.25" eyepiece, 2" focuser, and a 2x barlow lens. With the addition of the RS-232 communication port on the hand control, the telescope can be controlled via a PC and the autoguider port can function for connecting cameras to perform astrophotography.


  • High quality 6" refractor
  • Heavy Duty computerized German Equatorial mount
  • 9x50 finderscope with bi-directional alignment screws and a spring loaded pivot support
  • 2" focuser allows for use with 2" or 1.25" eyepieces
  • Star diagonal provides more comfortable viewing position when observing objects that are high in the sky
  • Ultra sturdy 2" diameter steel tripod with accessory tray
  • “The SkyX – First Light Edition” astronomy software with a 10,000 object database, printable sky maps and 75 enhanced images


  • Proven 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)




Product Series

The Advanced Series family of computerized GoTo telescopes was designed to offer the novice or more advanced user a selection of models with the features and quality that serious amateurs can appreciate.  These scopes come on heavy-duty computerized German Equatorial mounts with ultra-sturdy 2" stainless steel legs and center tray for superior rigidity and vibration dampening.

Additional Information

Name Celestron - C6-RGT 150mm Refractor Telescope
Manufacturer Celestron
Model 21020
Discountinued Yes
Accessory Tray Yes
Alignment Procedures AutoAlign, 2-Star Alignment, Quick Align
Angular Field of View 0.83 °
Aperture 150 mm (5.91 in)
CD ROM "The Sky®" Level 1
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
Counterweights 2-11 lbs
Database 40,000 objects, 100 user defined programmable objects. Enhanced information on over 200 objects
Eyepiece 1 20 mm (0.79 in)
Finderscope 9x50
Focal Length 1200 mm (47.24 in)
Focal Ratio 8
Magnification 1 60 x
Mount CG-5 Equatorial
Optical Tube Length 50.5 in (1282.7 mm)
Power Supply Car Battery Adapter
Resolution (Dawes) 0.77 arcsec
Resolution (Rayleigh) 0.93 arcsec
Software Precision 24 bit, 0.08 arcsec calculation
Star Diagonal 1.25
Tracking Modes EQ North and EQ South
Tracking Rates Sidereal, Solar and Lunar
Tripod 2 inch Stainless Steel