M13 - The Great Globular Cluster in Hercules (Jason Guenzel)

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

M13 - The Great Globular Cluster in Hercules, Jason Guenzel

Powered byPixInsight

M13 - The Great Globular Cluster in Hercules

Powered byPixInsight

M13 - The Great Globular Cluster in Hercules

Often referred to as the finest globular cluster in the northern sky, Messier 13 is likely home to hundreds of thousands of stars. Stars in globulars such as these can be compacted into tight little neighborhoods, with typical separations of only a light year (less quarter the distance we are from our closest neighbor). In fact, in the core, star spacings could be significantly more cramped. They typically consist of large older stars of roughly the same age, indicating they were spawned by a similar common mechanism. Though uncommon, the tight spacing does lead to occasional star mergers in which the resultant star differs significantly from the rest of the population.

Globulars are typically satellites of a host galaxy and this one is no exception. This globular sits over 20,000 light years distant and outside the disk of the Milky Way. Measuring close to 200 light years wide it is one of the largest in apparent size for us on Earth.

I was able to finish this one off though the data was shot under less-than-stellar conditions and under direct moonlight. It is less integration than I would normally put into an image, but you have to take what you can get, I suppose. One thing good about shooting globulars is that they are not affected as much by the moon, so that was what led me to capture it when I did. I'm still really hoping the weather takes a turn toward Spring!

Enjoy!

Cloudy Nights
Schmidt-Cassegrain Telescope (SCT) Imagers
ZWO ASI1600MM/QHY163M

Please note: The following tables are updated every 24 hours.

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	Basic success
Started	...
Astrometry.net job	2019059
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

Image Index:

Contribution Index (beta):

M13 - The Great Globular Cluster in Hercules

M13 - The Great Globular Cluster in Hercules

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

In these public groups

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

M13 - The Great Globular Cluster in Hercules

M13 - The Great Globular Cluster in Hercules

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

In these public groups

Notifications

AstroBin is in READ ONLY mode

Sorry :-(

Sorry :-(

Sorry :-(

Are you really sure?

Warning!

Warning!

Are you sure?

Report abuse

Slideshow settings

IOTD/TP stats (last [x] days)

Distribution of astrophotographers

Distribution of subject types

Distribution of data sources

Sorry

Sorry

Share

Upload new revision

Upload uncompressed source (XISF/FITS/PSD/TIFF)

Delete image and all its revisions?

Delete original image?

Delete all other versions?

Delete all revisions?

IOTD/TP stats

The following people like this image

The following people bookmarked this image

Warning

Flag malfunctioning thumbnails

Contains

Remove yourself as a collaborator

Plate-solving information