DayStar Filters FlatCap Imaging Diffuser (150-159mm OTA OD)

Use the DayStar Filter FlatCap Imaging Diffuser to capture a flat field reference image when setting up and calibrating your astrophotography or imaging system. The diffuser is designed to fit over the front-most component of your telescope optical tube, and this one will fit OTAs with 150-159mm outside diameters.