Supernova Remnants (Gary Imm)

Supernova Remnants

Supernova remnants (SNR) are some of the most fantastic objects in the sky. The fine tendrils seen throughout each nebula are ionized gas fronts, ejected as shock waves in the supernova explosion. The different colors reflect the variations in the strengths and compositions of these gas shock waves. Each SNR continues to expand outward, changing the details of its appearance slightly each year. These SNRs are typically thousands of years old.

The use of narrowband filters is required in order to bring out the color and detail of these nebulae. The filters typically used to capture the SNR signal are hydrogen, oxygen and sulfur. Most of these images use the bi-color HOO palette.

Over 300 SNRs have been catalogued in our Milky Way. The poster contains the SNRs that I have been able to image to date. The technical data for the objects on the poster is shown in Revision E.

Each of the objects of the poster has previously been uploaded and described individually on Astrobin. They all reside in my Astrobin SNR Collection.

Final
Original
H
I

H

Description: Technical Data

Uploaded: ...

I

Description: Object Locations

Uploaded: ...

Cloudy Nights
Themed Compilation Posters

Nebulae
Nebulae Posters
SNR

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 failed
Started	...
Astrometry.net job	6292875
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

Image Index:

Contribution Index (beta):