FMA180 pro adopts a sextuplet air-spaced APO design with
three lenses in front and three in the rear, two of which are ED glasses,
providing excellent correction of chromatic aberration.
It still has a 44mm aperture, 180mm focal length, and 4.5
focal ratios. It supports a 44mm full-frame image circle.
Rosette Nebula | ASKAR FMA180pro+zwo 294mc
FMA180 pro Parameters