NGC 7293 (Caldwell 63, PK 36-57.1 PN G036.1-57.1) planetary nebula in Aquarius. Taken
Sept 29, Oct 2, Oct 5, and Oct 6, 2007 with a DSI Pro II and Outback Cooler on a C80ED
operating at f7.5. RGB subframes were 2 minutes, while the H-alpha subframes were
4 minutes and the OIII subframes were 6 minutes. The resulting total exposures were
Ha = 140 min, OIII = 138, R=22 min, G= 36 min and B= 36 min. The final LLRGB
composite was processed in the following combination Ha:(Ha+OIII) : (Ha+R):(OIII+G):(OIII+B).
Captured with Envisage, calibrated and sigma combined in Iris with other processing using FITZ,
PixInsight LE and Photoshop CS. North is up.