71F Flat-Field Diagonal Any dust you see in

Any dust you see in the photos is easily removable - it seems that these develop an electrostatic charge such that the dust in the air is just attracted to the optics

Compared to FMA180

4kg Rear-end thread type M78×1-M54×0

The objective lens features a sextuplet air-spaced APO design and includes two pieces of ED glass

14-bit ADC– giving high dynamic range of 13 stops

71F Flat-Field Diagonal Any dust you see inThe Askar 71F is an OTA with an aperture of 71mm, a focal length of 490mm, and a native focal ratio of F6. 9. The Askar 71F adopts a quadruplet air spaced APO lens design, including one piece of ED glass which can effectively reduce chromatic aberration. The Askar 71F supports 44mm full frame imaging with great performance of the surrounding star points. The Askar 71F is a self flattened design that allows users to avoid calculating the back focus and