Hercules Cluster - M13 (Edward Overstreet)

Celestial hemisphere: Northern · Constellation: Hercules (Her) · Contains: Hercules Globular Cluster · IC 4617 · M 13 · NGC 6205

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Hercules Cluster - M13

Link: https://www.youtube.com/@nightskyimaging/streams

Link to TIFF/FITS: http://www.nightskyimager.com

Powered byPixInsight

Hercules Cluster - M13

Link: https://www.youtube.com/@nightskyimaging/streams

Link to TIFF/FITS: http://www.nightskyimager.com

I took 20, 10 second exposures - 20, 15 second exposures, - 20, 20 second exposures - 20, 30 second exposures and 20, 45 second exposures. I blend the images giving the most weight - 60 percent to the 10 second stack.....down to the 45 second stack that was weighted at 5 percent. I shot the cluster using an ASI533MC Pro camera at -10~ with the Celestron Edge 8 HD and 7x reducer (1422 fl). The gain was set at 0 and offset 10. My goal was to expose all of the stars in the core without oversaturating any part of the core. The images were captured unguided, running a Pempro pec curve only on an Atlas Pro EQ/AZ mount

I processed the stack in PixInsight and used Pixel math for most of the processing.

I used 3 sample points and AXIAL placement in DBE.

SPCC was used for color calibration

No deconvolution was used - no noise reduction...it wasn't needed in spite of small stacks and 0 gain......I wasn't expecting that.

GHS was used for the non linear transform

Modest saturation in curves

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Status	Advanced success
Started	...
Astrometry.net job	7965183
PixInsight job	I21DO5W2MKYOA1KM6P131JG5QJ156LFE
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	16h41m37s.910
RA (top/left)	16h40m07s.471
RA (top/right)	16h41m15s.779
RA (bottom/right)	16h43m06s.441
RA (bottom/left)	16h41m58s.510

Dec (center)	+36°27′45″.66
Dec (top/left)	+36°31′35″.29
Dec (top/right)	+36°09′50″.71
Dec (bottom/right)	+36°23′51″.41
Dec (bottom/left)	+36°45′39″.34

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Hercules Cluster - M13

Hercules Cluster - M13

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Hercules Cluster - M13

Hercules Cluster - M13

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