SHO and HA versions for this new year Rosette.
Atik 314L+ with FFR WOIII and Takahashi FS-60. HA SII OIII Astrodon 5nm filters. LX90 mount and guiding.
HA 2 hours, OIII 4 hours, SII 2h20. Location : Chatenay Malabry, France. Focal length : 291mm, Sampling 4,55"/pixel.
Pure HA layer, seen in Astronomie Magazine ed. Feb 2010 :