Bay of Rainbows (Ron Giddy)

Contains: Solar system body or event

Bay of Rainbows

Acquisition type: Lucky imaging

Sinus Iridum – The Bay of Rainbows. In this image clearly showing its classical Jewelled Handle, comprising an illusionary setting for 5 gemstones, only visible for a few short hours each month when the terminator passes over the basin. The low sunlight illuminates the Jura mountains with a Clair-Obscure effect at 2 days after first quarter setting the valleys in deep shadow while highlighting the prominent peaks creating the visual effect of a Jewelled Handle. It is a highly prominent and imposing feature which stands out against a background of darkness which is difficult to image correctly while retaining the low Dorsa wrinkled wave like features within the bay that also come to prominence at this time. Another hugely important and stand out feature of this image is the “Moon Maiden” first brought to prominence by the Italian astronomer Giovanni Cassini in a drawing published in 1679. “She” can be seen in the structure of the Promontorium Heraclides overlooking the peaceful bay. (to best view the Maiden, rotate the image 90 degrees counterclockwise). Other standout features are the Promontorium Laplace, the small crater Laplace A at the entrance to the bay and the crater Bianchini in deep shadow on the crest line of the Montes Jura. To the right of the image are the craters Helicon and Le Verrier.

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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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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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PixInsight job	n/a
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