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Celestron - C100ED-RGT 4" Advanced Series Refractor Telescope


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Manufactured by: Celestron


CELESTRON - C100ED-RGT 4" Advanced Series Refractor Telescope • 21026

The Celestron C100ED-RGT is a 4" (100mm)  f/9 APO refractor  with high quality optical tube equipped with  ED glass providing excellent color correction and razor sharp images and virtually eliminates chromatic aberration usually seen during planetary and lunar viewing. Celestron has included a 2" Rack and Pinion focuser, 25mm 1.25" eyepiece, erect image diagonal, and a 9x50 finderscope.

The German Equatorial mount has precision worm gears on both axes for extremely smooth, rock solid stability largely due to the included heavy-duty CG-5 tripod with larger and more substantial (2") legs that also provide excellent damping characteristics. 


Features Include:

  • 100mm (4") diameter ED Refractor
  • f/9 Focal Ratio
  • Fully multi-coated optics
  • Low dispersion ED glass
  • 2" Rack and Pinion Focuser
  • 20mm Plossl eyepiece (45x)
  • 9x50 finderscope
  • 1¼  Erect Image stardiagonal
  • Heavy Duty (CG-5) German equatorial mount






Additional Information

Name Celestron - C100ED-RGT 4" Advanced Series Refractor Telescope
Manufacturer Celestron
Model CEL-21026
Manufacturer Part No CEL-21026
Telescope Aperture 3.1" - 4"