Sharpstar Optics 0.74x Reducer and Flattener for Full Frame Cameras for Sharpstar AL-140PH Telescopes - RD140075

Sharpstar OpticsSKU: RD140075

Sale price$514 CAD
In stock: 2 unit(s) - Most orders placed by 2PM EST will be shipped out the same day (weekdays)


Designed to work with the Sharpstar 140PH apochromatic triplet refractor, the Sharpstar 0.74x Reducer and Flattener produces a flat field and razor-sharp images across a full-frame image circle.

The three-element design takes the 140PH from f/6.5 to f/4.8. The camera end of the flattener has M48x0.75 threads, while the telescope side has M88x1 threads to connect directly to the 140PH focuser.

This flattener transforms the Sharpstar 140PH into a powerful and highly capable imaging tool.


  • Works with: Sharpstar 140PH apochromatic triplet refractor
  • Focal ratio: f/4.8
  • Imaging circle: 44mm
  • Lens number: Triplet
  • Max outer diameter: 88mm
  • Back focus: 55mm
  • Overall length: 106mm
  • Surface coating: Fully multicoated
  • Weight: 0.9kg

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