M51 - One Year Later (Greg Bass)

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn) · Contains: IC 4277 · M 51 · NGC 5194 · NGC 5195 · Whirlpool Galaxy

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M51 - One Year Later

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M51 - One Year Later

Where I live this time of year has a low hanging overcast, not especially conducive for astrophotography as a hobby. However, in a little over an hour's drive I can be under 6,000' Bortle 3 clear skies.

When I joined Astrobin last year, I posted an image of M51 that I had taken in April and July of 2021. It was captured with my 40-year old orange Celestron C8 and an unmodified Nikon D5600. Since then, I've acquired a mid-90s Celestron C8 and I've added a mono camera.

With the evolution in my equipment, I packed my camping gear and headed to the mountain to take another shot at the Whirlpool galaxy.

Amazing to see the difference between the M51 images that one year's growth in this hobby can make.

Original
Final
B

B

Description: As I continue to learn PixInsight, I thought this revision, in which I added the Ha data using Pixel Math instead of the NBRGB Combination Script, is visually more appealing.

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SoCal Astrophotography

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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	Basic success
Started	...
Astrometry.net job	5808296
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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M51 - One Year Later

M51 - One Year Later

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Image Index:

Contribution Index (beta):

M51 - One Year Later

M51 - One Year Later

Equipment

Acquisition details

Description

Comments

Revisions

B

Sky plot

Histogram

In these public groups

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