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Unfortunately Celestron C4-R Advanced Refracting Telescope - 21016 is no longer carried by OpticsPlanet. You can also explore other items in the Telescopes category yourself to try and find the perfect replacement for you!

Celestron C4-R Advanced Refracting Telescope - 21016 Product Info

Celestron C4-R Advanced Refracting Telescope #21016 carefully designed for the more advanced astronomer and feature imageexquisite optics on a heavy-duty mount. The optics of this telescope are made to exacting standards, with high quality materials to ensure top performance. The Celestron C4R offers a 63% increase in image brightness over 80mm models, with the larger aperture delivering incredible images of the moon; Saturn and its ring structure; Jupiter and its belts; and hundreds of deep-sky objects, including galaxies, nebulae and star clusters. Celestron C4 R is mounted on the CG-4 mount. The mount features precision gears for extremely smooth motion. A counterweight, latitude scale, setting circles, and slow motion controls on both axes are standard, so you have a fully loaded telescope right from the start.

For more information on Celestron C4-R Advanced Refracting Telescope #21016 please make sure to check out the Celestron C4-R Advanced Refracting Telescope Manual in PDF format (~291KB).

Specifications for Celestron C4-R Advanced Refracting Telescope #21016:

Optical Design:   Achromatic Refractor
Optical Diameter:   4.0" (102mm)
Focal Length:   39.4" (1000mm)
Focal Ratio:   f/10
Maximum Useful Magnification:   240x
Resolving Power (arc seconds):   1.14
Optical Coatings:   Multicoated
Optical Tube Dimensions:   4.0 x 40.0" (10.2 x 101.6 cm) WxL
Mount Type:   German-type equatorial
Eyepiece Barrel Diameter:   1.25"
Finderscope:   6x30mm
Tripod:   Adjustable aluminun
Motor:   Optional
Weight:   36.00 lb (16.33 kg)

Features of Celestron C4-R Advanced Refracting Telescope #21016:

  • Glass, coated optics
  • German equatorial mount
  • Slow-motion controls with setting circles

Package Contents:

  • Celestron C4-R Advanced Refracting Telescope #21016
  • 1-1/4" 20mm Eyepiece (50x)
  • 6x30 Finderscope and Mounting Bracket
  • CG-4 Equatorial Mount and Tripod
  • Rack and Pinion Focuser - 1-1/4"
  • 90° Mirror Diagonal - 1-1/4"
  • The Sky Level I CD-ROM
  • Accessory Tray

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Celestron C4-R Advanced Refracting Telescope - 21016, MPN: 21016, UPC: 050234210164, Code: CI-TS-21016

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