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