Southern Pinwheel Galaxy (Messier 83) (Bruce Rohrlach)

Celestial hemisphere: Southern · Constellation: Hydra (Hya) · Contains: M 83 · NGC 5236 · Southern Pinwheel Galaxy

Southern Pinwheel Galaxy (Messier 83), Bruce Rohrlach

Powered byPixInsight

Southern Pinwheel Galaxy (Messier 83)

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

Powered byPixInsight

Southern Pinwheel Galaxy (Messier 83)

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

The stunning Southern Pinwheel Galaxy (Messier M83; The Milky Way's smaller cousin) in the constellation of Hydra, almost directly overhead at around 3am this morning. With a diameter 40% the size of the Milky Way and containing around 40 billion stars, it is the closest barred spiral galaxy to the Milky Way at 15 million Light Years distant.

It's face-on aspect present a great opportunity for astronomers to study the workings of a galaxy similar to our own galaxy type. Six supernova have been identified to date in M83, five of which occured in the last 100 years,making it a great target for amateur supernova hunters. If you image M83 regularly - compare your subs !

This was the second test object with my new ZWO ASI224mc CMOS planetary camera that I have purchased in preparation for Jupiters upcoming opposition.This cam has real potential for small DSO's (galaxies small planetary nebula and globular clusters). This image comprises 36 minutes of exposure (stack of 72 x 30 sec subs) imaged with a ZWO ASI224mc CMOS sensor (polar aligned with PoleMaster).

A fair bit of AMP glow at 1 minute exposure, so I backed off to 30 second subs, but nevertheless was very happy with the signal (sensitivity) which allowed the image to be built from relatively modest integrated exposure time. Looking forward to seeing how M83 looks once I build up around 2 hours of exposure. March, April and May are the best months for M83 in southern skies.

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	3509201
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

Image Index:

Contribution Index (beta):

Southern Pinwheel Galaxy (Messier 83)

Southern Pinwheel Galaxy (Messier 83)

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

Image Index:

Contribution Index (beta):

Southern Pinwheel Galaxy (Messier 83)

Southern Pinwheel Galaxy (Messier 83)

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