Optolong CLS EOS-C Clip on Filter Medium Dovetail Clamp 1x Instruction

1x Instruction

Parfocal filters: All Astronomik Filters are parfocal

12nm filters are the better choice

The Astronomik UHC filter enhances deep-sky views

Optolong CLS EOS-C Clip on Filter Medium Dovetail Clamp 1x InstructionOptolong CLS EOS C Clip on Filter OPTOLONG CLS Filter Clip Built in Filter for EOS C Camera Planetary CCD Cameras & DSLR This filter is made for photography of deep sky targets in urban environments. The filter works by blocking the wavelengths or mercury and sodium vapour used in urban lighting while letting the visible and the critical OIII, H Alpha and H Beta bands through, allowing great versatility in terms of potential objects to image. Use it