reducers, flatteners & correctors

Antares Focal Reducer - 2" - 0.7x - Multicoated - 4204

Antares   ——   SKU: SIS-4204
$114.00 CAD
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Product Info

Antares Focal Reducer - 2" - 0.7x - Multicoated

Product Highlights:

  • Antares Focal Reducer - 2"
  • 0.7x Reduction (approx.)
  • 43 mm Aperture
  • 4 Element Achromat
  • Fits standard 2" barrel filter threads
  • Designed For f/10 or higher f/ratios
  • Fully Multicoated

The Antares FR2-0.7X is the same 4-element f/6.3 lens system used for f/10 Schmidt-Cassegrain telescopes but in a 2" barrel threaded for standard filters. It is recommended for increasing true field in telescope with f/ratios of f/10 or higher. Focal length reduction is around 0.7X, but the exact reduction factor depends on the lens positioning between the objective and image plane. (Not a true field corrector lens.)


Antares Model No: FR2-0.7
Optics Type: Focal Reducer Lens
Aperture: 43 mm
Focal Length: -NA-
Optical Design: 4-Elements
FL Reduction: 0.63x to 0.7x (approx.)

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