Antares Focal Reducer - Schmidt-Cassegrain - Multicoated - 4203

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Sky Instruments   ——   SKU: SIS-4203
$124.00 CAD
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Product Info

Antares Focal Reducer - Schmidt-Cassegrain - Multicoated

Product Highlights:

  • Antares Focal Reducer - For SCT Telescopes
  • f/6.3 (Reduction) Focal Ratio
  • 43 mm Aperture
  • 4 Element Achromat
  • Fits standard SCT Output Threads
  • Designed For f/10 Schmidt-Cassegrain Scopes
  • Fully Multicoated

This Antares SCTFR is the standard thread-on F/6.3 4-element fully multicoated reducer used on f/10 Schmidt-Cassegrain telescopes. It works best with this type of telescope optics, reducing the SCT f/number from f/10 to f/6.3. It is actually only a reducer, but it does increase true field at the expense of some increase in spherical aberration, and some vignetting (dimming) at the edge of the field. (Not a true corrector lens.)


Antares Model No: SCTFR
Optics Type: Focal Reducer Lens
Aperture: 43 mm
Focal Length: -NA-
Optical Design: 4-Elements
FL Reduction: 0.63x (approx.)

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