Great News to Fuji, Olympus and Pentax Users! STC Astro-Multispectra Clip Filter Is Now Available for You! - Vendor and Group Announcements - Cloudy Nights
Camera Sensor Neutral Density Filter // STC Optics Clip-in ND Filter Update - YouTube
From Dened to Sadr 3, first light with STC clip filter duo narrow-band ( David ) - AstroBin
STC Launch Clip Filter Range for Olympus Cameras – 43 Rumors