M19 (NGC 6273) Globular cluster in Ophiuchus in RGB and Boundary of Extinction (Ian Parr)

Celestial hemisphere: Southern · Constellation: Ophiuchus (Oph) · Contains: M 19 · NGC 6273

M19 (NGC 6273) Globular cluster in Ophiuchus in RGB and Boundary of Extinction, Ian Parr

Powered byPixInsight

M19 (NGC 6273) Globular cluster in Ophiuchus in RGB and Boundary of Extinction

Powered byPixInsight

M19 (NGC 6273) Globular cluster in Ophiuchus in RGB and Boundary of Extinction

Messier 19 or M19 (also designated NGC 6273) is a globular cluster in the constellation Ophiuchus and about 28,700 Light Years away. It is one of the most oblate of the known globular clusters but the flattening appears to the result of extinction caused by intervening gas and dust. This cluster contains an estimated 1,100,000 times the mass of the Sun and it is around 11.9 billion years old. That intervening gas and dust created a special problem when processing due to the mis-leading colour gradient which sent me back to gather more data and a final tweak to the gradient line in NSG helped to resolve that. With so many stars in the field and the underlying gradient, I abandoned DBE and stuck to WYSIWYG for a result that confirmed what was evident in some wide field images of that region; that the globular resides on the edge of the boundary of the extinction zone and it's oblate nature is a result of that.

And so with that the moon has come back into play and I say good bye to the seasonal globular feast and go back to Narrow band.

This month's new moon was a very welcome change from the prevailing rubbish conditions.

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	6089481
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

Image Index:

Contribution Index (beta):

M19 (NGC 6273) Globular cluster in Ophiuchus in RGB and Boundary of Extinction

M19 (NGC 6273) Globular cluster in Ophiuchus in RGB and Boundary of Extinction

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

Image Index:

Contribution Index (beta):

M19 (NGC 6273) Globular cluster in Ophiuchus in RGB and Boundary of Extinction

M19 (NGC 6273) Globular cluster in Ophiuchus in RGB and Boundary of Extinction

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

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