SharpStar 0.74x (f/4.8) Reducer for 140PH
SharpStar 0.74x (f/4.8) Reducer for 140PHSharpStar 0.74x (f/4.8) Reducer for 140PHSharpStar 0.74x (f/4.8) Reducer for 140PHSharpStar 0.74x (f/4.8) Reducer for 140PH

SharpStar 0.74x (f/4.8) Reducer for 140PH

£415.00✓ 2 year warranty


1x in stock shipped 1-2 working days

About this product

Model:  sharpstar_140ph_reducer
Part Number:  140PH Reducer

Dedicated 0.74x Reducer / Flattener for SharpStar 140PH Telescopes

The f/4.8 Focal Reducer for the Sharpstar 140PH telescope provides excellent image quality across a large imaging circle. Large enough to cover a 35mm full format sensor.

This 0.73x Reducer and Flattener features a triplet air-spaced design and wide aperture that achieve excellent field flatness and illumination over a 44mm image circle.

One end of the reducer features an M88×1 thread that connects to the 140PH focuser. While the camera side includes an external male M48×0.75 thread with a 55mm back focus distance for connection to popular M48 Camera adaptors and M48 threaded filter Wheels and Cameras. 

The reducer also includes an internal female M48x0.75 thread for attaching a filter.

Incorporates a 360º rotator for convenient framing.


  • Suitable for Sharpstar 140PH
  • Reduces from f/6.5 to f/4.8 focal ratio
  • 44mm Fully illuminated image circle
  • Fully multi-coated,  air-spaced triplet optics
  • 88mm Outer diameter
  • 55mm back focus
  • Total Length: 106mm (including M48 Thread)
  • Weighs 0.9kg
  • Telescope Model: Sharpstar 140PH

Spot Diagram

Connection Diagram



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