Bode's Galaxy (Chris Kagy)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: Bode's Galaxy · Cigar Galaxy · M 81 · M 82 · NGC 3031 · NGC 3034

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Bode's Galaxy

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Bode's Galaxy

This is, essentially, my real first light project with the Stellarvue SVX-102T, and was very straightforward for acquisition and processing.

Over several clear (!!) nights, I collected 2.5 hours each RGB (180s exposures at gain 0), and 10.5 hours Lum (60s exposures at gain 0). In Bortle 8.5 Northern VA, shooting at the low gain allowed me to lengthen my exposure and clip fewer than 10px in each frame.

Processing was not unusual: WBPP to stack (with LN, and 2x drizzle) and dynamic crop. RGB followed the typical Channel Combination, BXT, DBE, NXT, SXT, GHS, CT, followed by a light convolution.
After deconvolving the Lum, I lightly sharpened with MLT then used GHS to stretch, followed by HDRMT and LHE to recover some detail. I then pulled the Lum master into Photoshop as a TIF and sharpened using high pass filters at a small and then slightly larger pixel size. After slight contrast adjustment with curves, I pulled the Lum master back into PI and added it to the RGB master with LRGB Combination. As you can see, nothing unusual except, perhaps, for sharpening in PS which I find gives me a tool that I can control better.

NOVAC
"Simply Stellarvue"

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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
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Star trails
Northern lights
Noctilucent clouds
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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.
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	9171843
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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