Southern Pinwheel Galaxy with faint Tidal Stream (Terry Robison)

Southern Pinwheel Galaxy with faint Tidal Stream

The Southern Pinwheel Galaxy has a Magnitude of 7.54, making it one of the brightest barred spiral galaxies our the sky. This is a massive grand design spiral and is about one half the size of our galaxy, The Milky Way. Grand design spiral is an appropriate name for this classification.

It occupies an area of 12.9 X 11.5 arcmin of the sky, but the presentation and orientation of M83 really couldn’t get any better. I can look and explore the details of this galaxy for extended periods. It has well-defined arms containing very active and bright Ha areas. Tiny wispy threads are visible at the ends of the galaxy arms. If you look carefully, dark vanes present within the dimmest parts. And, to top it off, the many tiny galaxies distributed throughout really complete the scene. Yep, it’s been on my todo list for years, and hopefully, I have done it justice.

There is another treat, a very faint tidal stream. This would be the glowing area on the far left. I checked with Simbad, and it’s there, bearly. Conner Matherne recently posted his version of this incredibly faint stream of material that is in an arc, away from the main body of the galaxy. It was an interesting puzzle on how to tackle the problems of revealing such a faint feature next to a very bright galaxy. The most challenging part was dealing with what appears to be a dip in luminosity around the galaxy.

Instruments Used:

•10 Inch RCOS fl 9.1

•Astro Physics AP-900 Mount

•SBIG STL 11000m

•FLI Filter Wheel

•Astrodon Luminance, Red, Green, Blue Filters

•Baader Planetarium H-alpha 7nm Narrowband-Filter

Acquisition Details

•Luminance 35 X 900 seconds

•Ha 36 X 1200 seconds

•Blue 12 X 900 seconds

•Green 8 X 900 seconds

•Red 7 X 900 seconds

Total Time: 27.5 Hours

Astronomical Society of Victoria (ASV)
Objects of the South - negative declination only

	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

	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

	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

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	3374247
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

Image Index:

Contribution Index (beta):

Southern Pinwheel Galaxy with faint Tidal Stream

Southern Pinwheel Galaxy with faint Tidal Stream

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

In these public groups

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

Southern Pinwheel Galaxy with faint Tidal Stream

Southern Pinwheel Galaxy with faint Tidal Stream

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