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.
FEATURES
- 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
![](/user/products/large/sharpstar_140ph_reducer_optics_1.jpg)
![](/user/products/large/sharpstar_140ph_reducer_optics_2.jpg)
Connection Diagram
![](/user/products/large/sharpstar_140ph_reducer_connections_1.jpeg)
Dimensions
![](/user/products/large/sharpstar_140ph_reducer_dimensions_1.jpg)
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