M13 The Great Globular Cluster in Hercules, March 2020 (Vitali)

Celestial hemisphere: Northern · Constellation: Hercules (Her) · Contains: Hercules Globular Cluster · M 13 · NGC 6205

M13 The Great Globular Cluster in Hercules, March 2020, Vitali

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M13 The Great Globular Cluster in Hercules, March 2020

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M13 The Great Globular Cluster in Hercules, March 2020

I was curious what a 2800mm focal length scope can do with M13. The faint stars around the cluster needed a long total exposure time. The full resolution image shows a number of tiny 18m..20m galaxies around the cluster and stars up to magnitude 21.5.

This image consists of 475 unguided exposures 120 seconds each, which were acquired on multiple nights during the last new-Moon period: 19-03-2020, 16-03-2020, 19-03-2020, 23-03-2020, 24-03-2020, 25-03-2020, 26-03-2020, 28-03-2020, 31-03-2020, 01-04-2020, 02-04-2020.

The color calibration was done using PixInsight's Photometric Color Calibration tool (being red color blind I have to rely on such aids

.

Comments are welcome and appreciated.

Be safe and stay healthy!

Original
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Final
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C

Description: The magic of stacking. This is the best raw frame, the result of image integration process and the final processed image. Downsampled 4x.

Uploaded: ...

I

Description: Reprocessed again. I felt that my previous processing attempts did not fully unlock the potential of the raw data.

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J

Description: And another one with HDRMultiscaleTransform and over-saturation.

Uploaded: ...

Globular Star Clusters

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Status	Advanced failed
Started	...
Astrometry.net job	3974741
PixInsight job	BH0KO38D0LX6OQIUMGNFZ54PB2MWYEFN
PixInsight queue size	n/a
PixInsight stage	PLATE_SOLVING_IMAGE

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M13 The Great Globular Cluster in Hercules, March 2020

M13 The Great Globular Cluster in Hercules, March 2020

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M13 The Great Globular Cluster in Hercules, March 2020

M13 The Great Globular Cluster in Hercules, March 2020

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