M31 (JDJ) - AstroBin

Celestial hemisphere: Northern · Constellation: Andromeda (And) · Contains: Andromeda galaxy · Great Nebula in Andromeda · M 110 · M 31 · M 32 · NGC 205 · NGC 206 · NGC 221 · NGC 224

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M31

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M31

Imaged the Andromeda Galaxy (M31) on the nights of November 2 & 24, 2019. This is first set of M31 images for the season. I took ~5 hours of RGB data using an LPS-D1 filter and ~5 hours of narrowband data using an Optolong Lenhance dual narrowband filter. This first image is the RGB version generated from the LPSD1 filter data.

Imaged with WO GT81 at F4.7 (382 mm focal length) using Flat6A II field flattener/0.8x reducer, IDAS LPS D1 Clip Filter, and full spectrum modified Nikon D5300.

Pre-processed using PixInsight Batch Pre-Processing (BPP) script. Images calibrated using darks, bias, and flats. Stacked 112 subs (180 sec at ISO 200) for a total integration time of ~5 hours. Post-processed in Pixinsight: Cropped, gradient removal with ABE, MLT for noise reduction, Photometric Color Calibration, stretched using masked stretch, Curves Transformation, ACDNR for noise reduction, Morphological Transformation to shrink stars, Local histogram transform, and Color Saturation boost.

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Final
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Description: HDR transform to increase dust lane visibility. Cropped to remove off-color edges.

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The OSC Club (One Shot Camera)
The refractors!
Cloudy Nights
Suburban Astrophotography

Galaxies

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	Distinct awarded users	Total awarded images
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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	Advanced success
Started	...
Astrometry.net job	3090375
PixInsight job	E5KOUSX92TUD80YVK96AFGBPOMGRN0KB
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	00h42m43s.14
RA (top/left)	00h36m48s.10
RA (top/right)	00h38m49s.85
RA (bottom/right)	00h48m23s.74
RA (bottom/left)	00h46m48s.42

Dec (center)	+41°14′05″.10
Dec (top/left)	+42°36′15″.8
Dec (top/right)	+39°38′20″.1
Dec (bottom/right)	+39°50′44″.4
Dec (bottom/left)	+42°49′17″.7

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M31

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M31

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