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Skip to content Celestron EclipSmart 10 Pack

Starizona SCT Coma Corrector/Reducer LF - Large Format C11/C14

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SKU: STZ-SCTCORR-LF
$499.00
 

SCT Focal Reducer/Coma Corrector LF
Large Format for C11/C14

The Starizona SCT Coma Corrector offers astronomers and astrophotographers with standard SCT telescopes a wider field of view. This version, a large-format version, is designed to cover full-frame (35mm format) sensors.

This corrector is made for the Celestron 11" and 14" standard SCTs. It will thread directly onto the 3.29" threads on the rear cell of the telescopes. With the larger optical elements, this SCT Corrector LF will minimize the vignetting over the large sensors. The remaining vignetting is minimal and limited only by the telescope baffles.

The focal ratio in the C14 is reduced to f/7.5 and speed is increased 2.1x and the focal ration is reduced to f/7.2 in the C11 and the speed is increased 1.9x.

The backfocus is 132mm (5.2") and accommodates a variety of accessories. The rear threads are 3.29" threads, the same on the rear cell of the specified telescopes.

The graphs depicted in the photos depict spot sizes compared to the C14 at f/11 and the C14 at F/7.5. Each square is 40 microns. The RMS spot size at the edge of the field for the C14 without the SCT Corrector LF is 106 microns. The SCT Corrector LF is only 13 microns!


Specifications

For the C11

  • Focal Ratio: f/7.2
  • Focal Length: 2000mm

For the C14

  • Focal Ratio: f/7.5
  • Focal Length: 2665mm

General Specifications

  • Image Circle: 42mm
  • Mechanical Backfocus: 132mm (5.20")
  • Maximum Diameter: 3.5"
  • Length: 2.7"
  • Mounting Thread: Standard C11/14 3.29"-16tpi thread
  • Weight: 1.6 lbs (730g)
  • Optics: Fully AR coated optics
  • Place of Manufacture: Made in USA