Abell 1 (PN A66 1, PN G119.4+06.5, PK 119+06.1), Planetary Nebula in Cepheus. Taken Nov. 15, 18, 21,
22. 23, 24 and 25, 2022. Imaged with Starlight Xpress’ SX-825 camera and a Celestron EdgeHD 9.25 at
f10, on a Losmandy G11/Gemini mount. The H-alpha and OIII subframes were 15 mintues binned 1x1,
while the RGB subframes were 3 minutes binned 2x2, resulting in the following total exposures
L:R:G:B = (HA+OIII): (R+Ha):(G+OIII):(B+OIII) (min) = (570+480):(57+570):(57+480):(57+480).
Captured with Nebulosity, calibrated, sigma combined in Siril with other processing using PixInsight
LE, Photoshop CS and GIMP. North is up.