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Having high QE means more of the light that enters your telescope and reaches the sensor is actually used
we recommend our standard UHC filter for greater contrast enhancement
So if you would use it with a really compact
MFR Coating: Usable down to f/1
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 Having high QE means moreAskar 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
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