SVBONY Telescope Filter H-Alpha 7nm Canon EOS-C Clip Filter Narrowband Astronomical Photographic CCD Filter for Deep Sky

SIZE EOS-C

• Optical high-precision double-sided polishing to ensure that the parallelism is higher than 30 inch and high flatness 1/4, to ensure that does not affect the image quality
• High cutoff the light damage and other stray light interference; electron gun evaporation technology
• Using German imported glass; using double-sided polishing processing
• High uniformity planetary wheel coating fixture to improve the uniformity of the filter wavelength
• The narrow band filter; even in areas where light pollution is heavy; and the full moon (the moon's largest and brightest) is the same; very narrow bandwidth; which reduces the interference of the external environment

• Item Reference: B07HQDVQFS 0602318837271 602318837271