Reprocessing my old subs - M31 (Palmito)

Celestial hemisphere: Northern · Constellation: Andromeda (And) · Contains: Andromeda Galaxy · HD3765 · HD3969 · HD4143 · HD4174 · HD4322 · HD4501 · M 110 · M 31 · M 32 · NGC 205 · NGC 206 · NGC 221 · NGC 224

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Reprocessing my old subs - M31

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Reprocessing my old subs - M31

My processing skills have greatly improved over the past 3 years. The weather has been painfully bad for the past 3 months, so I started reprocessing my old subs.

Two years ago I was shooting with a Canon DSLR lens. Too little did I know about astrophotography. Yet to my surprise I was able to gather much much more than my previous attempt.

For that I have applied all of my skills and dedication. Restarting from stack :') as many times as necessary. I have also applied new skills, as working with a lens has it's own challenges.

In particular I have explored the world of gnomonic projections. Building a distortion map with ImageSolver and a star field with CatalogsStars and aligning my subs with those.

I believe including this step, correcting for the lens distortion greatly improved my stacks.

As my bin2x2 RGB felt very under sampled I decided to deconvolve them too. That greatly improved sampling, but induced chromatic aberrations. I feel this is the main flaw in this work. I am more than happy with the result and don't think it is worth trying to reduce it further.

Beginners AP
The refractors!
CMOS Imagers
Cloudy Nights
AAA : Astronomes et Astrographes Amateurs
Suburban Astrophotography
PixInsight Addicts
Losmandy mounts
Camera Lens Astrophotography
ZWO ASI1600MM/QHY163M

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	Distinct awarded users	Total awarded images
Image of the day
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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
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Northern lights
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	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.
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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	4126189
PixInsight job	D5D7EKTNM0C1T7RDA1Y52G78ZULFPARP
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	00h42m50s.56
RA (top/left)	00h47m32s.61
RA (top/right)	00h47m43s.54
RA (bottom/right)	00h37m58s.24
RA (bottom/left)	00h38m08s.15

Dec (center)	+41°15′02″.6
Dec (top/left)	+40°04′49″.7
Dec (top/right)	+42°24′29″.0
Dec (bottom/right)	+42°24′32″.10
Dec (bottom/left)	+40°04′51″.4

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Reprocessing my old subs - M31

Reprocessing my old subs - M31

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Reprocessing my old subs - M31

Reprocessing my old subs - M31

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