Sun FD in H-Alpha 29th of August 2022 - Timelapse (Arne Danielsen)

Contains: Solar system body or event

Sun FD in H-Alpha 29th of August 2022 - Timelapse

Acquisition type: Lucky imaging

Sun FD in H-Alpha 29th of August 2022 - Timelapse

Acquisition type: Lucky imaging

Sun FD in H-Alpha 29th of August 2022 - Timelapse

Time-lapse animation created from 462 recordings between 09:58 and 13:54UT on August 25th 2022. Each recording was 20 seconds long with a framerate of 30fps (600 frames) and a 10 seconds delay between each recording. The recordings where made using Coronado 60mm/BF15 w/Beloptik ITF, stopped down to 50mm, Baader 35nm H-Alpha and ZWO ASI 178mm, which gives a focal-length of 400mm and a sampling of 1.24" per pixel.

Everything was mounted on a Sky-Watcher SolarQuest AltAz mount.

The best (sharpest) 200 frames from each recording was stacked in AutoStakkert!3 before they were aligned, sharpened in ImPPG and contrast-stretched in Adobe Photshop.

The animation was scaled down to 2/3 in PIPP at 20 fps effectively compressing the 3 hours 56 minutes of duration down to 23 seconds.

The field rotation is because the sequence was recorded in AltAz mode.

Please note: The following tables are updated every 24 hours.

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.

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Astrometry.net job	n/a
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Sun FD in H-Alpha 29th of August 2022 - Timelapse

Sun FD in H-Alpha 29th of August 2022 - Timelapse

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Sun FD in H-Alpha 29th of August 2022 - Timelapse

Sun FD in H-Alpha 29th of August 2022 - Timelapse

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