ZWO FF90 f/6.8 APO REFRACTOR Dew heater workbenches and shelf storage

workbenches and shelf storage

Backed by 5 Years Sky-Watcher Limited Warranty

Direct connection via 4 x M3 screws

but as an OIII parallel filter to better remove stars from images

CaF2 has got an impressive refractivity which enables construction of the ultimate lens system that can deliver an incredible amount of sharpness across a very broad spectral range

ZWO FF90 f/6.8 APO REFRACTOR Dew heater workbenches and shelf storageThe ZWO FF90 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 FF90 is a versatile instrument and excels not just at imaging, but as a grab & go visual telescope. The OTA itself weighs