Cassiopeia in Narrowband (Doug Gray)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: B175 · Bubble nebula · Cassiopeia · Cepheus · IC 10 · IC 1470 · IC 1502 · IC 1525 · IC 1536 · IC 1590 · IC 59 · IC 63 · IC 65 · M 103 · M 52 · NGC 103 · NGC 110 · NGC 129 · NGC 133 · NGC 136 · NGC 146 · NGC 147 · NGC 185 · NGC 189 · NGC 225 · NGC 278 · NGC 281 · NGC 358 · NGC 366 · NGC 381 · And 65 more.

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Cassiopeia in Narrowband

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Cassiopeia in Narrowband

This one overlaps a bit with my prior widefield shot of Cepheus. I suppose I'm slowly working my way towards a mosaic of the northern hemisphere sky, although I don't think I'll every have something as grand as JP Metsavainio's epic mosaic.

Unlike the Cepheus shot, I don't think I've seriously shot anything in this field. I'm starting on the bubble nebula with the big apo now, but I don't see much of it here. SH2 155, 157, 171, 184, and 185 are now on my potential target list now.

Standard post processing with Siril, StarNet++, and Photoshop, but was not able to do the photometric calibration due to plate solve issues. This is a modified HSO palette with the green channel also getting about 10-20% Ha and OIII. Flats remain an issue, so much local brightness normalization was done by hand and lead to some fainter details being washed out and maybe some noise being kept.

Milky Way, Nightscapes and Widefields (CMOS)

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Status	Advanced success
Started	...
Astrometry.net job	4971723
PixInsight job	6IO0PN4HSTK5MKRNM8GQUZ5GK0MUH9RK
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	00h13m56s.4
RA (top/left)	02h27m24s.9
RA (top/right)	01h18m33s.2
RA (bottom/right)	23h27m07s.0
RA (bottom/left)	21h42m34s.5

Dec (center)	+61°22′54″
Dec (top/left)	+74°48′17″
Dec (top/right)	+46°07′16″
Dec (bottom/right)	+44°52′49″
Dec (bottom/left)	+71°48′34″

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Cassiopeia in Narrowband

Cassiopeia in Narrowband

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Cassiopeia in Narrowband

Cassiopeia in Narrowband

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