Michael Nolle
NGC246
NGC246 is an interesting planetary nebula in Cetus. I imaged it during two evenings on the 30th and 31st December 2021 from my location on Gozo / Malta.
Imaged through an 8 inch f/8 GSO RC on an EQ8. Camera was a modified Canon EOS 700D with cooling, which kept the sensor at -15 degree Celsius. I used again the Optolong L-eNhance filter. In all 51 x 5 minute exposures were stacked with DeepSkyStacker in sigma clipping mode (dark, flats and bias correction applied). Further processing was done in multiple software like Fitswork (gradient removal), Photoshop (a slight correction of elongated stars, RGB alignment due to atmospheric dispersion, background neutralisation), Affinity Photo (saturation, contrast, levels, noise reduction).
North is to the right, in the top right corner you can also see NGC255,
NGC246
NGC246 is an interesting planetary nebula in Cetus. I imaged it during two evenings on the 30th and 31st December 2021 from my location on Gozo / Malta.
Imaged through an 8 inch f/8 GSO RC on an EQ8. Camera was a modified Canon EOS 700D with cooling, which kept the sensor at -15 degree Celsius. I used again the Optolong L-eNhance filter. In all 51 x 5 minute exposures were stacked with DeepSkyStacker in sigma clipping mode (dark, flats and bias correction applied). Further processing was done in multiple software like Fitswork (gradient removal), Photoshop (a slight correction of elongated stars, RGB alignment due to atmospheric dispersion, background neutralisation), Affinity Photo (saturation, contrast, levels, noise reduction).
North is to the right, in the top right corner you can also see NGC255,