Astronomik SII 6 nm CCD Clip-Filter for Sony Alpha 7 and 9 Cameras
Astronomik SII 6 nm CCD Clip-Filter
for Sony Alpha 7 & 9 Bodies
This 6 nm SII CCD clip-filter for Sony Alpha 7 and 9 cameras (see below for compatible models) is suitable for imaging cosmic bodies (including nebulae) along the singly ionized sulfur (SII) wavelengths. This narrowband, 6 nm filter works well both in conditions of light pollution or dark skies! Blocking all wavelengths from UV to infrared (including the emission lines of sodium/Na and mercury/Hg artificial lighting) except for the SII singly ionized sulfur wavelengths which occur as a doublet at 671.7 nm and 673 nm. With an average of 94% transmission (90%+ guaranteed), this narrowband filter is a good choice for heavily light polluted observing sites, or for imaging faint objects in star-crowded regions of the night sky.
Astronomik's innovative clip-filter system allows a variety of filter types to be attached to your camera, and are designed for use with normal lenses or telescopes. Made in Germany, these filters have an optical thickness of 1 mm with laser-cut lenses and black anodized aluminum frames.
Compatibility of Astronomik Clip-Filter for Sony Alpha 7 & 9
These Astronomik clip-filters have been successfully tested with Sony Alpha 7, 7r, and 7s bodies in Mk I, Mk II, and Mk III versions. Also compatible with the Alpha 9 body.
Currently, these clip-filters are not compatible with the following models: Alpha 7r IV, Alpha 58, Alpha 68, Alpha 77, Alpha 99, Alpha 6500, and all Sony DSLR bodies using the A-mount.