Messier 13 (LRGB) (Linda)

Celestial hemisphere: Northern · Constellation: Hercules (Her) · Contains: HD150679 · HD150998 · Hercules Globular Cluster · IC 4617 · M 13 · NGC 6205 · NGC 6207 · PGC 2074909 · PGC 2075117 · PGC 2076112

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Messier 13 (LRGB)

Link: https://lindasastronomyadventures.space/?p=11349

Powered byPixInsight

Messier 13 (LRGB)

Link: https://lindasastronomyadventures.space/?p=11349

Like many amateur astronomers I have a long relationship with M13. It was the first DSO I ever found on my own (thanks to a Telrad) and it remains one of my favorite visual targets. I imaged it from the edge of the suburban DC lightsome a few years ago with an 80mm refractor and I wasn't feeling much need to revisit it but one my teammates on the SRO telescope suggested it so we added it in. I'm glad we did! This version of M13 is much improved! A much larger telescope, finer image scale, more integration time and better processing skills all made for a better result!

Processing was fairly straightforward. Care in stretching is probably the most important thing with a bright object like this one.

Processing:

L:
dynamic crop
DBE
blurXterminator
GHS

RGB
channel combination
dynamic crop
DBE
blurXterminator
SPCC
LRGBCombination (adding L)
GHS iterations (small stretches combined with linear shifts left) to bring up the levels without blowing the core)
curves (slight contrast adjustment and slight saturation boost)
unsharp mask (very mild sharpening)

LGBTQIA+ Astrophotographers
AstroBin Platform open discussions community forum
Women Astrophotographers
Cloudy Nights
NOVAC
Imaged with N.I.N.A.
N.I.N.A. Users

SRO Planewave CDK14

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Distribution of astrophotographers

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	Distinct awarded users	Total awarded images
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Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
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Star trails
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Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
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Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

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.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Advanced success
Started	...
Astrometry.net job	7882423
PixInsight job	ZVWPP95IXU16K72RRS9V9H97SWXX5Z35
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	16h41m44s.590
RA (top/left)	16h43m27s.992
RA (top/right)	16h43m32s.841
RA (bottom/right)	16h40m01s.860
RA (bottom/left)	16h39m54s.152

Dec (center)	+36°28′12″.38
Dec (top/left)	+36°51′42″.34
Dec (top/right)	+36°05′42″.73
Dec (bottom/right)	+36°04′36″.64
Dec (bottom/left)	+36°50′36″.40

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Messier 13 (LRGB)

Messier 13 (LRGB)

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Messier 13 (LRGB)

Messier 13 (LRGB)

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