M13 - Great Hercules Cluster (Sedat Bilgebay)

Celestial hemisphere: Northern · Constellation: Hercules (Her) · Contains: Great Cluster in Hercules · M 13 · NGC 6205 · NGC 6207

M13 - Great Hercules Cluster, Sedat Bilgebay

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M13 - Great Hercules Cluster

When I tried to upload this image yesterday, I had some difficulties either because of my slow connection or due to Astrobin database maintenance. I had a flight to catch I was not able to enter the specifics of the image. Sorry about that.

This is a work in progress... I had to capture the subs less than optimal conditions, ie hazy weather, and when the object was low in the sky. I was essentially testing my new MESU 200 mount's tracking.

To obtain this Pseudo Luminance, I have combined long and short exposures of various lengths and various filters as below:

Luminance - 12x 900s, 10x 30s, 50x 10s

Red – 9x 600s, 30x 10s

Green – 14x 600s, 24x 10s

Blue – 21x 600s, 35x 10s

These frames were captured on the following nights:

August 16, 17,18,19,20,21, September 4, 5, 24, 25

I’m still trying to find out the best method to process this data…. What I did so far in post processing in Pixinsight is the following:

- Dynamic crop

- Dynamic Background Extraction

- Histogram Transformation

- HDRMultiscale Transform

I will combine the RGB channels and see how the color version will turn out.

The image scale is 1.76” per pixel. So it’s not a high res image. However, I’m very pleased with how the numerous tiny galaxies in the image are showing their details. There are some artifacts in the L subs caused by a reflection from the OAG mirror which I fixed in the RGB shots. I will have to spot heal those in Photoshop probably.

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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 failed
Started	...
Astrometry.net job	893527
PixInsight job	K9XMTF4PG8QIUJQG7RAX2SAEXGLVT86G
PixInsight queue size	n/a
PixInsight stage	PLATE_SOLVING_IMAGE

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M13 - Great Hercules Cluster

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M13 - Great Hercules Cluster

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