NGC 253 The Sculptor Galaxy in RGB with Spectophotometric Colour Calibration (Ian Parr)

Celestial hemisphere: Southern · Constellation: Sculptor (Scl) · Contains: NGC 253 · Sculptor Filament · Silver Coin

NGC 253 The Sculptor Galaxy in RGB with Spectophotometric Colour Calibration, Ian Parr

Powered byPixInsight

NGC 253 The Sculptor Galaxy in RGB with Spectophotometric Colour Calibration

Powered byPixInsight

NGC 253 The Sculptor Galaxy in RGB with Spectophotometric Colour Calibration

The Sculptor Galaxy also known as the Silver Coin Galaxy and is located at the center of the Sculptor Group, one of the nearest groups of galaxies to the Milky Way.
It is brightest galaxy in the Sculptor group and is one of the intrinsically brightest galaxies in the vicinity of our Milky Way, only surpassed by the Andromeda Galaxy and the Sombrero Galaxy with a apparent magnitude of 8.0 and size of 27.5 by 6.76 arcminutes.

This has been re-re-worked with the new Spectrophotometric Colour Calibration tool in Pixinsight which is applied early to Linear combined Data and the results are then stretched with the Globalised Hyperbolic Stretch tool. The results are so much easier to manage and requires far less pushing around later and that delivers the sort of natural colour I was hoping for while keeping better detail than I got previously from the same data. I have seen reviewers claiming they cannot see any difference over PCC. This is my Final Revision using non-default values in SPCC like the actual filters et.al. Hmm .. see Adam Block's new YouTube run through on this tool before casting stones. Using the most accurate parameters for the equipment, like filters, and using background neutralisation on a preview region of intertest, as well as applying to the Linear data early, means a lot less bruising around the details and a much cleaner result downstream which made it easier to manage background murk from light pollution I am very happy with some of the small background galaxies now.

So despite the dearth of clear nights lately I should have plenty to do now walking back through my old RGB Data.

Original
Final
B

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	6679514
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

Image Index:

Contribution Index (beta):

NGC 253 The Sculptor Galaxy in RGB with Spectophotometric Colour Calibration

NGC 253 The Sculptor Galaxy in RGB with Spectophotometric Colour Calibration

Equipment

Acquisition details

Description

Comments

Revisions

Sky plot

Histogram

Image Index:

Contribution Index (beta):

NGC 253 The Sculptor Galaxy in RGB with Spectophotometric Colour Calibration

NGC 253 The Sculptor Galaxy in RGB with Spectophotometric Colour Calibration

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