M 97 A Planetary Nebula in Ursa Major (G400)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: IC 1258 · IC 1259 · M 97 · NGC 3587 · Owl nebula · PK148+57.1

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M 97 A Planetary Nebula in Ursa Major

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M 97 A Planetary Nebula in Ursa Major

Gathered photons on this object during midnight and 1:30am within the nautical twilight. Thereafter the moon got to prominent and the scope was heading into the halo of one of my three street lamps I have to struggle with. Indeed, ISO 4000 was a challenge to be expected in the processing later. But the test shots before starting the series showd that RGB was well located within the first third of the histogram. The only thing I do not know where it stems from ist that black artefact in the lower right area of the photography. Need to sort this out later.

Original
C
Final
D

C

Description: Darkended the background. With respect to the bottom right artefact it is not covered within the Masterflat. It is within the light frames but it does not look like a defocussed dust corn or anything like that...

Uploaded: ...

D

Description: Made the outer red shell more prominent and and denoised the core as well as the background.

Uploaded: ...

Schmidt-Cassegrain Telescope (SCT) Imagers

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Status	Advanced success
Started	...
Astrometry.net job	2089157
PixInsight job	ORA55FCGG5NU1FSXDQOHOW1EQMVM0R6F
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	11h14m51s.330
RA (top/left)	11h16m11s.392
RA (top/right)	11h15m18s.233
RA (bottom/right)	11h13m30s.677
RA (bottom/left)	11h14m24s.756

Dec (center)	+55°00′40″.18
Dec (top/left)	+54°51′15″.00
Dec (top/right)	+55°15′01″.38
Dec (bottom/right)	+55°10′01″.78
Dec (bottom/left)	+54°46′18″.89

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M 97 A Planetary Nebula in Ursa Major

M 97 A Planetary Nebula in Ursa Major

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M 97 A Planetary Nebula in Ursa Major

M 97 A Planetary Nebula in Ursa Major

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