LBN 331 - Omicron Cygni

by Eduardo Barbosa

Objects in field: LBN 331, LBN 336, LBN 345, 30 Cyg, 31 Cyg, 31 omi01 Cyg, 32 Cyg, 32 omi02 Cyg, The star 30 Cyg, The star ο1 Cyg, The star ο2 Cyg

Equipment: Sky-Watcher Esprit 100ED, QHYCCD QHY268 M

Integration: 39h

Hα, OIII and SII, 12 hours each. The palette is HOO, so SII doesn't make it into the colour, but it does feed the luminance, which is synthetic and built from all three channels. Stars are RGB. It does a convincing impression of a supernova remnant. It isn't one. This field is almost always presented on the diagonal. I've rotated it horizontal, which turns the bright arc into a ridgeline and…