Askar 0.7x Reducer FRA600 Full Frame F/3.9
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Vai al moduloAskar 0.7x Reducer for FRA600 – Full Frame Performance at F/3.9
The Askar 0.7x Reducer for the FRA600 is designed to transform the FRA600 astrograph into a fast, high-performance imaging system. It reduces the focal ratio to F/3.9 while maintaining a fully flat field for Full Frame sensors, ideal for wide-field and high-speed astrophotography.
Optical Performance and Compatibility
The reducer provides excellent illumination across a 44 mm image circle, minimizing vignetting and ensuring consistent image quality over the entire sensor. Its mechanical design ensures a stable and precise connection to the FRA600 optical system.
Connections and Backfocus
The reducer features a 2" threaded interface with an M48x0.75 connection, ensuring compatibility with most astronomical cameras and accessories. The standardized 55 mm backfocus allows direct integration into common imaging setups.
Technical Specifications
| Reduction factor | 0.7x |
| Resulting focal ratio | F/3.9 (with FRA600) |
| Supported image circle | 44 mm |
| Connection | 2" thread – M48x0.75 |
| Backfocus | 55 mm |
The Askar 0.7x Reducer for FRA600 is an essential accessory for astrophotographers seeking higher imaging speed, wide-field coverage and a perfectly corrected field on full-frame sensors.