Antares Focal Reducer - 2" - 0.5x - 40 mm Multicoated - 4202

Sky Instruments   ——   SKU: SIS-4202
$46.00 CAD
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Product Info

Antares Focal Reducer - 2" - 0.5x - 40 mm Multicoated

Product Highlights:

  • Antares Focal Reducer - 2"
  • 0.5x Reduction in Nominal Focal Length
  • 40 mm Aperture Doublet
  • 158 mm Achromat
  • Fits standard 2" Filter Threads
  • Fully Multicoated

This Antares Focal Reducer - 2" - 0.5x - 40 mm (Multicoated) can be used either visually or photographically to decrease focal length and increase true field at the expense of some vignetting (dimming) at the edge of the field. The reduction depends on the spacing of the reducing lens between the objective and the image plane. This will vary depending upon the telescope used and the camera and accessories used, therefore the exact reduction factor is not a constant. Antares FR2-0.5 is a fully multicoated 40/158 mm achromat and fits standard 2" filter threads.


Antares Model No: FR2-0.5
Optics Type: Focal Reducer Lens
Aperture: 40 mm
Focal Length: 158 mm
Optical Design: Doublet
FL Reduction: 0.5x (approximate)

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