Messier 97 in HO : Planetary Nebula in Ursa Major (Daniel.P)

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

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Messier 97 in HO : Planetary Nebula in Ursa Major

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Messier 97 in HO : Planetary Nebula in Ursa Major

Another image acquired under the cold, light polluted sky near Paris.

I am now using routinely remote control of outdoor computer using AnyDesk software.

Note that on the 21st of January, I acquired 10 hours of net exposures over a total time of 13h, in a fully automated way, only doing remote checks of progress from inside my home. This is a good progress going toward my remote observatory.

The processing was performed in PI as follows :

note : star mask was created using satrnet++ applied on Lum component of RGB image

For H & O channels :

- Images Calibration (Dark and Flat )

- Cosmetic Correction

- Image Registration

- Image Integration

- Mure Denoise

Then :

- Create HO color image

- Color balance on nebula and color saturation using mask to protect dark area.

- ABC & DBE

- Deconvolution of SHO masked with 2.4 pixel psf

- Going NL using HT

- Color Saturation range masked (and desaturate bkg)

- Color balance stars under star mask

- Color sat satrs under star mask

- TGV denoise (no mask)

- HDR for version B

Final image adjustments performed in Photo on Imac :

- levels adjustments

- adjust color looking using "selective color"

- crop & deflip

Final
Original
B

B

Description: Boosted to show halo

Uploaded: ...

ZWO ASI1600MM/QHY163M

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Status	Advanced success
Started	...
Astrometry.net job	3222735
PixInsight job	I2L7M2SO9UPPHQIVN6VJ3657JKOUNSQV
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	11h14m48s.130
RA (top/left)	11h18m54s.331
RA (top/right)	11h10m37s.316
RA (bottom/right)	11h10m47s.441
RA (bottom/left)	11h18m53s.743

Dec (center)	+55°00′37″.30
Dec (top/left)	+55°27′05″.20
Dec (top/right)	+55°26′10″.16
Dec (bottom/right)	+54°33′39″.82
Dec (bottom/left)	+54°34′32″.71

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Messier 97 in HO : Planetary Nebula in Ursa Major

Messier 97 in HO : Planetary Nebula in Ursa Major

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Messier 97 in HO : Planetary Nebula in Ursa Major

Messier 97 in HO : Planetary Nebula in Ursa Major

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