ZWO FF131 f/7.5 APO REFRACTOR Binoviewer Losmandy style (3”) clamp

Losmandy style (3”) clamp

These filters are made from quartz glass which has an ultra-low thermal expansion coefficient and outstanding thermal and mechanical properties

up to 100 alignment stars for modeling

It is compatible with the Prima Luce Lab Sesto Senso 2 or ZWO EAF electronic focusers

ZWO FF131 f/7.5 APO REFRACTOR Binoviewer Losmandy style (3”) clampThe ZWO FF131 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 ZWO FF131 is a versatile instrument and excels not just at imaging, but as a grab & go visual telescope (eyepieces &