Description
- 72mm aperture
- 400mm focal length
- Quintuplet air- spaced APO design
- Supporting full frame
Welcome to our brand new Askar FRA series! The FRA, which stands for Flat-field Refractive Astrograph,is a refractive equipment with built-in flat field correction. FRA can also be applied in visual observation. So the FRA series is among the few versatile and quality astrophotographic devices in the current astronomy market.