M51 (Nils Langner)

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn) · Contains: IC 4263 · M 51 · NGC 5194 · NGC 5195 · Whirlpool Galaxy

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M51

Revision title: Reworked in SirIL using biases and flats

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M51

Revision title: Reworked in SirIL using biases and flats

Taken under a reasonably dark country sky from the backyard in a tiny franconian village called „End“.

Iso 6400.

No darks no flats no bias no autoguiding.

The Bresser AR-102xs/640 shows, due to its fast lens, significant blue chroma around brighter stars; however, this can easily be removed using the color replace tool in photoshop. It also shows significant field curvature; since I am not using a field flattener, I am concentrating on small objects centered in the optical axis cutting away the outer distorted areas.

Original
B
Final
C

B

Description: Pixinsight Processing:
Automatic Background Extraction
Background Neutralization
Colour Calibration
Multiscale Linear Transform/Denoising
Stretching
Curves Transformation
HDR
SCNR

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C

Title: Reworked in SirIL using biases and flats

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	Distinct awarded users	Total awarded images
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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
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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.
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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	5244827
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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M51

Revision title: Reworked in SirIL using biases and flats

M51

Revision title: Reworked in SirIL using biases and flats

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M51

Revision title: Reworked in SirIL using biases and flats

M51

Revision title: Reworked in SirIL using biases and flats

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C

Sky plot

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