Chroma filters optimized for fast optics

This is an exploration of DWB-111 in Ha 3nm. The Propeller Nebula is an emission nebula in the constellation Cygnus. This is a first light image for my new  Chroma Ha 3nm filter (1800 sec x 10) and the VSD with its reducer now at F3. OIII and  SII  to follow soon. 🙂

DWB-111 Propeller Nebula

DWB-111 Propeller Nebula

Set of special Chroma filters

This is special set of Chroma filters optimized for fast optics. In my case F3. Chroma manufacture high quality sputtered filters commonly used for Astronomy




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