M51 - The Whirlpool Galaxy (JDJ)

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn) · Contains: IC 4263 · IC 4278 · M 51 · NGC 5169 · NGC 5173 · NGC 5194 · NGC 5195 · NGC 5198 · Whirlpool galaxy

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M51 - The Whirlpool Galaxy

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M51 - The Whirlpool Galaxy

Imaged M51, the Whirlpool Galaxy, this past spring from my red zone backyard 10 miles north of Washington DC. Captured OSC RGB images using an LPS-D1 filter on the nights of May 6, 20, and 21, 2019.

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 80 subs (180 sec at ISO 200) for a total integration time of ~4 hours. Post-processed in Pixinsight: Cropped, gradient removal with ABE, MLT for noise reduction, Background Neutralization, Color Calibration, SCNR, stretched using Arcsinh then Histogram Transformation Tool, Curves Transformation, HDR transform, Local histogram transform, and Color Saturation boost.

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Final
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B

Description: Additional post-processing. Boosted blue channel.

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

Galaxies

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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	2955934
PixInsight job	88O0K8GTGRVJIVQBCGOEULCEA8MM48K3
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	13h29m58s.81
RA (top/left)	13h26m50s.18
RA (top/right)	13h27m02s.27
RA (bottom/right)	13h33m02s.67
RA (bottom/left)	13h33m00s.00

Dec (center)	+47°11′20″.9
Dec (top/left)	+47°52′46″.3
Dec (top/right)	+46°28′41″.4
Dec (bottom/right)	+46°29′33″.10
Dec (bottom/left)	+47°53′42″.4

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M51 - The Whirlpool Galaxy

M51 - The Whirlpool Galaxy

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Image Index:

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M51 - The Whirlpool Galaxy

M51 - The Whirlpool Galaxy

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Description

Comments

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Sky plot

Histogram

In these public groups

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