Newtonian RGBHa image of M101 - modified with 26 May 2023 luminance to show SN2023ixf (Tim Hawkes)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: M 101 · NGC 5451 · NGC 5455 · NGC 5457 · NGC 5461 · NGC 5471

Newtonian RGBHa image of M101 - modified with 26 May 2023 luminance to show SN2023ixf, Tim Hawkes

Powered byPixInsight

Newtonian RGBHa image of M101 - modified with 26 May 2023 luminance to show SN2023ixf

Powered byPixInsight

Newtonian RGBHa image of M101 - modified with 26 May 2023 luminance to show SN2023ixf

Combined image from 2 Newtonian telescopes. 2.5h OSC camera RGB image of M101 at F5.0 and f 1000mm combined with 40 min of an F4.0 , f = 1200 mm image with part of a 1h HA mono camera image added back into the red channel to emphasise HA regions.

103 of the 251 frames were taken at a darker (Bortle 4) site than the rest (Bortle 6) - moonless on both occasions. The frames from the darker site were weighted considerably more highly in the overall integration according to their SNR .

The luminance of the above was replaced with that from 193 x 40s AS1294MM exposures at high resolution (0.405 arcsec/ pixel) to show the May 2023 supernova.

M101 is visible as a large face on spiral galaxy. It is about 21M ly distant and comprises about a trillion stars. Somewhat similar to the Andromeda galaxy It has a disk mass on the order of 100 billion solar masses, along with a small central bulge of about 3 billion solar masses.M101 has a high population - more than 1200_ of HII regions many of which are very large and bright, three bright enough to be separately classified as NGC 5461, NGC 5462, and NGC 5471.M101 is asymmetrical due to the tidal forces from interactions with its companion galaxies which also triggers star formation in the spiral arms_ and for the largest of these sometimes triggers Type II core collapse supernovae.

The most recent of these supernovae - first recorded on 19 May 2023 - is shown in this image - at an estimated (approximate by me) visible magnitude of ~ 11.75 on 26 May 2023. It is located near NGC 5461, a prominent HII region in an outer spiral arm of the bright galaxy. Accounting for the 21 M ly distance the visible light output can be estimated as ~ 800 million x solar.

Original
Final
C

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	7839662
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

Image Index:

Contribution Index (beta):

Newtonian RGBHa image of M101 - modified with 26 May 2023 luminance to show SN2023ixf

Newtonian RGBHa image of M101 - modified with 26 May 2023 luminance to show SN2023ixf

Equipment

Acquisition details

Description

Comments

Revisions

Sky plot

Histogram

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

Newtonian RGBHa image of M101 - modified with 26 May 2023 luminance to show SN2023ixf

Newtonian RGBHa image of M101 - modified with 26 May 2023 luminance to show SN2023ixf

Equipment

Acquisition details

Description

Comments

Revisions

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?

Delete this revision?

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