The Helix Nebula
Astro-Physics RHA 305mm F3.8 Honders Astrograph, Bisque PME
SBIG STT8300 AO-8T FW8-G
34Hours of Ha, 5 Hours OIII + 30:30:30 mins RGB
AstroDon 3nm Ha, OIII, Gen 2 RGB
Capture with CCDops, post-processing in MaxImCCD 6 and Photoshop 6
Data capture from Barden Ridge, southern Sydney.
Deep H-alpha data is shown below
Image copyright Peter J Ward 2014