Baader 3.8 OD Digital Solar Filter 140mm

NOT suitable for visual observation. Only suitable for digital solar photography with all high-quality telescopes and long focal length telephoto lenses. Suitable for highest magnifications and detailed photography of sunspots etc. at very short exposure times ; AstroSolar FOTO solar filter foil OD 3.8, mounted stress-free in temperature-compensating mount ; No astigmatic images in winter or with rapid temperature changes in summer ; Scope of delivery: BDSF (ASTF) filter, two sets of centering pins in 38mm length. 3 pins with 10mm diameter and 3 pins with 20mm diameter, adjustable for the respective diameter of the telescope tube or dew cap. Additionally 3 securing straps with self-adhesive pads, cover plugs for adjustment openings, warning sticker for AstroSolar photo film; please use our Solar Filter Finder Tool to find the right filter for you - http://astrosolar.com/baader-solar-filter/index.php?lang=de