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Welcome to use brand new ASKAR FRA series! The FRA, which stands for “FLATFIELD REFRACTIVE ASTRAGRAPH”, is a refractive astrograph designed
for built-in flat field correction. FRA also used in visual observation, this series creates versatile high-quality flat frame images for astrophotography, 
is the few great telescope of versatile optical tube.

For more information, please go to Askar official website to check, click  here to jump.

It’s excellent in controlling and possibly avoiding chromatic aberrations, the image quality is also optimized to satisfy the customers of requirement.
It’s worth mentioning that FRA 400/5.6 has a pair of multifunctional attachment tube rings owns the patent, it’s not all style and no substance though, the FRA shows well-conceived design and has a practical three-sided mounting platform, which is convenient for attaching various accessories for photography.