M31 Andromeda (Parag Batavia)

Celestial hemisphere: Northern · Constellation: Andromeda (And) · Contains: 35 And · 35 nu. And · Andromeda Galaxy · HD3431 · HD3765 · HD3969 · HD4143 · HD4174 · HD4322 · HD4501 · HD4669 · HD4902 · M 110 · M 31 · M 32 · NGC 205 · NGC 206 · NGC 221 · NGC 224 · The star ν And

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M31 Andromeda

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M31 Andromeda

Another attempt at Andromeda. This one was taken on a night with about 40% moon, and a mix of below average seeing and above average transparency.Acquisition:

Lights: 210 x 120s (7 hrs) @ -10C, Gain 100
Flats: 40
Darks and Bias from library

Equipment:

ED80T-CF
Moonlite Focuser
Field reducer / flattener
Orion Starshoot G26 OSC
Orion 50mm guide scope
ASI120MM guide cam
CEM40 mount

High level processing steps:

WBPP
Crop, DBE, Neut, PCC
Mild (30%) NoiseXTerminator
Stretched manually with a combination of histogram transform and arcsinh - I seem to have better luck keeping colors this way
StarNet++
Galaxy processing

LHE
Lots of histogram + curves
More editing in Lightroom Classic to try to bring out some blues, and straighten out the central orange / yellow - I always struggle with this and may have gone too far
Back to PI

Stars processing

EZ Star reduction 2 steps
Saturation increase to bring out more colors

PixelMath to re-combine
Final noise reduction step with NoiseXTerminator

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	6379463
PixInsight job	4CAH07IB5KISDF1B3KTVRUNS94RYTSJT
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	00h42m48s.20
RA (top/left)	00h36m53s.29
RA (top/right)	00h53m19s.20
RA (bottom/right)	00h49m01s.74
RA (bottom/left)	00h32m09s.13

Dec (center)	+41°15′57″.5
Dec (top/left)	+39°34′22″.8
Dec (top/right)	+40°48′40″.6
Dec (bottom/right)	+42°56′22″.1
Dec (bottom/left)	+41°39′29″.4

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M31 Andromeda

M31 Andromeda

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Image Index:

Contribution Index (beta):

M31 Andromeda

M31 Andromeda

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

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