Askar FRA400 Astrograph Flat-Field f/5.6 to f/3.9 Telescope svbony usb camera 1 x SV190 10mm 1

1 x SV190 10mm 1

we closely examined the sensitivity curves of today’s popular CCD cameras

MFR Coating: Usable down to f/1

6nm offers better contrast

so it has ever been only available in the improved version

Askar FRA400 Astrograph Flat-Field f/5.6 to f/3.9 Telescope svbony usb camera 1 x SV190 10mm 1Askar FRA400 Flat Field Astrograph The Askar FRA400 is part of the acclaimed Askar FRA (Flat field Refractive Astrograph) series, designed for high quality astrophotography and visual observation. With built in flat field correction and excellent control of chromatic aberration, the FRA400 delivers sharp, colour accurate stars from centre to edge even on full frame sensors. Flat Field Design for Full Frame Imaging The FRA400 optical system uses a