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Currently Unavailable Celestron C4-R Advanced Refracting Telescope - 21016 is currently unavailable for purchase. Our team of product experts would be happy to recommend an alternative for you, or to answer any questions you might have. Please fill out our and a member of our team will respond within 24 hours!

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