M27 - 20211007 - TS72F6- UHC (altazastro)

Celestial hemisphere: Northern · Constellation: Vulpecula (Vul) · Contains: Dumbbell Nebula · M 27 · NGC 6853 · The star 14Vul

M27 - 20211007 - TS72F6- UHC, altazastro

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M27 - 20211007 - TS72F6- UHC

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M27 - 20211007 - TS72F6- UHC

More a test than a thorough work, this image was aimed at testing how much the field curvature of the TS72F6 APO without flattener affects the APS-C format.
Not much light was collected, also because of intervening clouds, tracking was also not ideal for a good part of the session, as was transparency, so the final result is far from ideal.
I had to significantly crop the stacked image to cut off (more or less completely) the curvature effect, however this proves that if the subject imaged does not fill most of the field and one is not excessively fussy, this scope can be used with a APS-C DSLR without a flattener.
Nevertheless, comparing this image with my other M27 pics taken with color cameras, it may even comes out as one of the best, a tribute to the little APO.

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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.

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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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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
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Astrometry.net job	5078311
PixInsight job	n/a
PixInsight queue size	n/a
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M27 - 20211007 - TS72F6- UHC

M27 - 20211007 - TS72F6- UHC

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M27 - 20211007 - TS72F6- UHC

M27 - 20211007 - TS72F6- UHC

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