Leo Triplet Medium Field (Christopher Davenport)

Celestial hemisphere: Northern · Constellation: Leo (Leo) · Contains: M 65 · M 66 · NGC 3593 · NGC 3623 · NGC 3627 · NGC 3628 · The star 73Leo

Leo Triplet Medium Field, Christopher Davenport

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Leo Triplet Medium Field

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Leo Triplet Medium Field

Red 180 x 36
Blue 180 x 24
Green 180 x 12

This image is one of those ones that really took me by surprise, these are short subs, with no lum or anything else. I had actually setup for a different target, but the timing for it was not great, so I collected some data on it and then it disappeared behind the trees.

So what to do now as it is still beautiful outside?

So thought I might as well collect some short subs on the Leo triplet for colour and set the sequence on repeat to get as much as possible until the clouds roll in. Then I went to bed, when I woke up in the morning the sequence had managed to run almost three times. It was set to collect 12 R&B and 6 Green.

Anyway I stacked the image set and used a balance of Lum from the three, to produce a artificial Lum channel. After pulling this out of APP, the detail was really good. Although I did have a bad gradient problem from the green channel in the sky background.

So my processing routine was pretty simple, Stack with Flats, darks and bias. Combine RGB, Boost the Lum channel. Then pushed this through starnet v2 to separate the stars and the galaxies.

In Photopea, I just cropped, and ran the usual noise reduction filters.
Then I made a artificial gradient layer off the galaxy layer, by masking out the galaxies and and setting it to soft light.

Next some some targeted curves layers, to boost the galaxies, to remove the green tinge in the sky etc. Then on the stars some dust and scratches, just light, like 2 pixel by 7.

Lastly boost the vibrance and the saturation and Viola.

Hope you enjoy this little, pearl as much as I do.

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	Distinct awarded users	Total awarded images
Image of the day
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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
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Star trails
Northern lights
Noctilucent clouds
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	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
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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.

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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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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	5697417
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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