M101 - 20220521 - TS72F6 - IR642 (altazastro)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: M 101 · NGC 5457 · NGC 5461 · NGC 5473 · NGC 5477

M101 - 20220521 - TS72F6 - IR642, altazastro

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M101 - 20220521 - TS72F6 - IR642

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

Powered byPixInsight

M101 - 20220521 - TS72F6 - IR642

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

My first experiment with the use of the Astronomik IR 642 filter (bandpass 642-842 nm) as an "urban filter for galaxies" to pierce through IL.
Results are promising, also considering that the sky was rather murky and that this time I live stacked the pics instead of saving the individual light frames and stacking them afterwards with Astro Pixel Processor, an approach that always guarantees better results, particularly on difficult subjects.
Indeed stars, particularly bright ones, look way more bloated than usual, albeit this could also be related to the use of an IR PASS filter with a refractor.
Astro Pixel Processor was used only for its "wiping" or light pollution reduction post processing feature.

Broadband under Bortle 7/8/9

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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	5786376
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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M101 - 20220521 - TS72F6 - IR642

M101 - 20220521 - TS72F6 - IR642

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Image Index:

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M101 - 20220521 - TS72F6 - IR642

M101 - 20220521 - TS72F6 - IR642

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Sky plot

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