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PN-M57_2021-10-20

PN-M57_2021-10-20

M57 aka The Ring Nebula in Lyrabr/2. Boltwood 0.4m f/4.7 Newtonian, Televue 2x barlow, QHY5III178MC colour camerabr/3. shot with SharpCap, 120 x 10s and 15s exposures at gain 42.br/4. SharpCap was unable to detect stars in any images so live stacking did not work, I had to save all individual images. Trailed images were removed and the remainder stacked using Siril, which was also used for colour balance, noise reduction, and histogram equalization. The resulting TIF image was enhanced (levels, curves, and saturation) and mildly sharpened in Photoshop.
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