Mars 28 Aug 2020 - 4 min stack (Seb Lukas)

Contains: Solar system body or event

Mars 28 Aug 2020 - 4 min stack

Acquisition type: Lucky imaging

Mars 28 Aug 2020 - 4 min stack

Acquisition type: Lucky imaging

Red Planet before dawn on Sat 29 Aug 2020 AEST.

Had a nearly two hour imaging run starting shortly after 3am with Mars at its highest. Maximum altitude is now less than 50 degrees from my location as the planet continues to move northward. To compensate for the effects of atmosphericdispersion I have decided to start using the corrector this opposition. This is the best three minute stack out of 30 OSC runs taken at various focal ratios. Additional length in the imaging train increases F number considerably but after comparing results from alternative setups (including drizzle option in AutoStakkert) I've decided to keep this combination (using Meade 2x short-focus barlow lens).

Shield volcano hemisphere is on view here with Amazonis, Olympus Mons and Tharsis Ridge approaching the terminator. Southerly Ascraeus Mons is sporting an evening shadow to its east and there appears to be a semi circular orographic cloud on top of Arsia Mons. The peaks appear pinkish in colour compared to the surrounding plain.

In the south albedo features of Mare Sirenum, Memnonia, Aonius Sinus and Solis Lacus stretch from P to F limb. The South Polar Cap has now shrunk considerably and there is a hint of dust activity to its immediate west. Opposite pole is showing signs of ice build up as the northern autumn commences.

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	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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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
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Mars 28 Aug 2020 - 4 min stack

Mars 28 Aug 2020 - 4 min stack

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Mars 28 Aug 2020 - 4 min stack

Mars 28 Aug 2020 - 4 min stack

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