M13 (iva) - AstroBin

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

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M13

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M13

M13, much better compared to my older image of the same subject.

New 80mm guide scope is doing fine in taming the added Barlow, out of the 102 frames I took I had to throw away only a couple (maybe there was a wind gust).
Acquisition was 2 minutes for all the 4 filters at 1x1 binning.

Couldn't really get rid of the background gradient so I needed to push the black point a bit high to get a decent uniformity.
I'm getting too lazy since I started using the AutomaticBackgroundExtractor in PixInsight, but unfortunately the feature doesn't really work well in case of a globular like this. that takes almost all the field of view!

I think I'm going to take another handful of globulars and get more proficient at post processing them.
The needed exposure time and number of post-processing steps for globulars are much less compared to other deepsky objects and results are decent even if the moon is close by.

I like the end result here but still all my images seem to lack sharpness... hope one day I'll find the reasons!

Globulars

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Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

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
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

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
Own remote observatory
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	1529772
PixInsight job	5CE9N05VEVSR7YGJYMX1I6XI98OOTAU0
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	16h41m39s.937
RA (top/left)	16h40m51s.805
RA (top/right)	16h42m37s.892
RA (bottom/right)	16h42m27s.862
RA (bottom/left)	16h40m42s.237

Dec (center)	+36°27′47″.14
Dec (top/left)	+36°37′01″.16
Dec (top/right)	+36°34′24″.70
Dec (bottom/right)	+36°18′31″.79
Dec (bottom/left)	+36°21′06″.90

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M13

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M13

M13

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