M31 (Andromeda Galaxy) in HaLRGB (Andrew Gutierrez)

Celestial hemisphere: Northern · Constellation: Andromeda (And) · Contains: Andromeda Galaxy · M 110 · M 31 · M 32 · NGC 205 · NGC 221 · NGC 224

M31 (Andromeda Galaxy) in HaLRGB, Andrew Gutierrez

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M31 (Andromeda Galaxy) in HaLRGB

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M31 (Andromeda Galaxy) in HaLRGB

My first effort at combining HaLRGB. I re-processed the same five frames (pre-processed in Astro Pixel Processor) multiple times in efforts at getting a more realistic version that resembled some of the outstanding versions I've seen on Astrobin. My first 3 efforts were post-processed in Photoshop exclusively, with a lot of unguided experimentation that led to unsatisfactory results.

In my final version, I used APP for a majority of the post-processing (combining the channels, reducing light pollution, calibrating the background and stars, stretching the image, and applying some color saturation). Then onto Photoshop for final tweaks (selective color enhancement, clarity, dehaze, some noise reduction). I'm much happier with the result here. This will be my post-processing method going forward, unless and until I decide to bite the bullet and learn PixInsight!

Original
C
Final
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C

Description: One more try. This one is back to HaRGB, and reflects an attempt to emulate a version that a friend processed in PixInsight using this data. I probably will need start using PI myself, as I feel rather directionless when trying to process in Photoshop.

Uploaded: ...

D

Description: Combined and 90% post-processed in Astro Pixel Processor instead of Photoshop. This seems to have preserved more detail and looks more natural/less processed to me than my prior Photoshop-dominant versions.

Uploaded: ...

NOVAC
Takahashi Refractors
ZWO ASI1600MM/QHY163M

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	Distinct awarded users	Total awarded images
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	Image of the day	Top pick	Top pick nominations	Total submitted
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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
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Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
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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	3822474
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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M31 (Andromeda Galaxy) in HaLRGB

M31 (Andromeda Galaxy) in HaLRGB

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Image Index:

Contribution Index (beta):

M31 (Andromeda Galaxy) in HaLRGB

M31 (Andromeda Galaxy) in HaLRGB

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Acquisition details

Description

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D

Sky plot

Histogram

In these public groups

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