NGC 55 From Red and Luminance Subs Only! (Alex Woronow)

Celestial hemisphere: Southern · Constellation: Sculptor (Scl) · Contains: IC 1537 · NGC 55 · PGC 1050 · PGC 107623 · PGC 107624 · PGC 107658 · PGC 107659 · PGC 124643 · PGC 124644 · PGC 124779 · PGC 124782 · PGC 171726 · PGC 599244 · PGC 599647 · PGC 600430 · PGC 600628 · PGC 601019 · PGC 601041 · PGC 601552 · PGC 601905

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NGC 55 From Red and Luminance Subs Only!

Powered byPixInsight

NGC 55 From Red and Luminance Subs Only!

NGC 55 From Red and Luminance Subs Only!

A.K.A: Cadwell 72

OTA: CDK 24"
Camera: Mor. 61000 (downsampled 4x)
Observatory: Heaven's Mirror
Date of Capture: Aug-Sept 2023
Date of Processing: Sept 2023

Exposures:
R:11 x 900 sec
L: 19 x 900
Total Exposure time: 7.5 hours
Image Width: 31 arc-minutes

Processing Tools:
1.   Commercial: PixInsight, Topaz (Studio2, Photo AI2), 3DLUT Creator
2.   Pixinsight Addons: NoiseXTerminator, BlurXTerminator, StarXTerminator, Normalize Scale Gradient
3.   My Scripts: NB_Assistant, AC_Restar, Subframe Weighting Tool (Excel w/ J. Hunt)

Processing Description:
That's correct…I had just 1hr of total exposure with about 2/3 of that in luminance and the rest in red…no blue, no green. Blue and green were synthesized from the difference between the luminance pixel values and the red pixel values. This is my first try at such a thing, and it is not bad. It would not be hard to redo and balance colors a bit better…but I not going to do that—this was just a proof of concept.

Alex Woronow

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	Advanced success
Started	...
Astrometry.net job	8525356
PixInsight job	9UF2ZPWNP5YEC619SSYTZMUQ55EJJMRL
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	00h14m52s.677
RA (top/left)	00h13m32s.133
RA (top/right)	00h16m13s.319
RA (bottom/right)	00h16m12s.823
RA (bottom/left)	00h13m32s.451

Dec (center)	-39°11′50″.67
Dec (top/left)	-39°22′13″.26
Dec (top/right)	-39°22′11″.70
Dec (bottom/right)	-39°01′24″.69
Dec (bottom/left)	-39°01′26″.37

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Contribution Index (beta):

NGC 55 From Red and Luminance Subs Only!

NGC 55 From Red and Luminance Subs Only!

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NGC 55 From Red and Luminance Subs Only!

NGC 55 From Red and Luminance Subs Only!

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