0.5x Focal Reducer For Telescope With 1.25 Inch Filter Thread, Fully Multi Coated Field Corrector For Visual And Astrophotography, Wide Field Of View And Shorter Exposure Times, 85mm Focal Length
✔️ 85mm focal length; ~0.5x reduction; 1.25in filter thread
This 0.5x focal reducer is a compact 1.25 inch threaded optical accessory designed for telescopes and astro-imaging setups. It lowers focal length to widen the field of view and shorten exposure times when attached between a telescope's eyepiece or camera and the optical path.
✅ 85mm focal length
✅ 0.5x reduction factor for wider field of view and shorter exposures
✅ 1.25 inch filter thread; 28.5x0.75 mm on both sides
✅ Black anodized aluminum housing; cemented, coated optics
✅ Stackable with other 1.25 inch threaded accessories
💡 What is a focal reducer used for in telescope imaging and visual observing?
It is a handy accessory that reduces the telescope’s effective focal length, expanding the field of view and enabling faster imaging. It works with standard 1.25 inch threaded equipment, and is suited for use with longer focal ratio telescopes and eyepieces with narrow to moderately wide apparent fields of view.
- Wider field of view for astrophotography
- Shorter exposure times for deep-sky imaging
- Works with standard 1.25 inch threaded accessories
- Compatible with longer focal ratio telescopes
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