M56 in a Sea of Stars (April-May 2020) (Vitali)

Celestial hemisphere: Northern · Constellation: Lyra (Lyr) · Contains: M 56 · NGC 6779

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M56 in a Sea of Stars (April-May 2020)

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M56 in a Sea of Stars (April-May 2020)

With just 8 degrees galactic latitude the M56 globular cluster is almost lost in a sea of Milky Way stars. I hope you enjoy the view.

During the processing I've tried to pay attention to the stars and to show how colorful they are. PixInsight's Photometric Color Calibration + SCNR processes have been used for the color calibration.

I've attempted to image M56 last year, but there was a problem with the EdgeHD main mirror back then, which caused severe collimation issues. So I was not able to get good enough raw data. I like the small cluster and wanted to have a good picture of it, hence the re-shooting

Let me know what you think. Comments are always welcome.

Vitali

B

Description: Downsampled 2x. I think that it looks better and makes processing artifacts in the stars less visible.

Uploaded: ...

C

Description: Another attempt to preserve star colors. I've used a different background subtraction method, different deconvolution and stretching parameters.

Uploaded: ...

D

Description: Integrated and reprocessed from scratch in PixInsight 1.8.8-6. Arcsinh + Masked Stretch for RGB to preserve the star colors, especially in the star centers.

Uploaded: ...

E

Description: A different PixInsight workflow.

Uploaded: ...

F

Description: More color saturation.

Uploaded: ...

Globular Star Clusters

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Status	Advanced success
Started	...
Astrometry.net job	4083969
PixInsight job	J5A3B3F977TUH15QEPPZ586IEBROC5RO
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	19h16m37s.127
RA (top/left)	19h17m40s.129
RA (top/right)	19h15m32s.379
RA (bottom/right)	19h15m34s.369
RA (bottom/left)	19h17m41s.752

Dec (center)	+30°10′45″.91
Dec (top/left)	+30°19′50″.60
Dec (top/right)	+30°19′14″.75
Dec (bottom/right)	+30°01′39″.32
Dec (bottom/left)	+30°02′14″.87

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M56 in a Sea of Stars (April-May 2020)

M56 in a Sea of Stars (April-May 2020)

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Contribution Index (beta):

M56 in a Sea of Stars (April-May 2020)

M56 in a Sea of Stars (April-May 2020)

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Acquisition details

Description

Comments

Revisions

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C

D

E

F

Sky plot

Histogram

In these public groups

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