ASKAR 91F f/6.7 APO REFRACTOR 294MM Three safety set screws

Three safety set screws

WARNING: this filter is only to be used for photographic observation

The coating has been optimized so that they are most effective where the human eye has its greatest sensitivity at night

0 connection

providing the necessary spacing for DSLRs and allowing an M54 x 0

ASKAR 91F f/6.7 APO REFRACTOR 294MM Three safety set screwsThe Askar 91F is an apochromatic quadruplet flat field astrograph that offers high performance for an exceptionally low price. The quadruplet design makes it perfect for both visual observation and astrophotography. The objective lens features an element of extra low dispersion glass (ED) that minimizes chromatic aberration. The Askar 91F is a versatile instrument and excels not just at imaging, but as a grab & go visual telescope. The OTA itself