NEOWISE (19 July 2020) (rdk_CA)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: Solar system body or event

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NEOWISE (19 July 2020)

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NEOWISE (19 July 2020)

I was able to get a crude image of comet NEOWISE through low clouds here in the Bay Area late last month. I acquired the image using my DSLR camera through a 135 mm lens set to f/2.8. This system was mounted on top of my C8 telescope. Light pollution is quite severe where I live, and the comet was nearly drowned out by the glow of city lights from San Francisco to the NW. Subtracting out the background was also complicated due to uneven transparency from the low clouds.

I am inexperienced with imaging and post-processing when it comes to comets and asteroids. In this case, I generated two stacks, using one with the stars as a reference and the other using the comet. I then removed the star trails for the comet-stabilized image and overlaid the two using Corel Paint Shop.

Bright comets like this don't come by all that often - so I am glad I had a chance to image it while I could (even if under less than ideal circumstances!)

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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.

Status	Basic success
Started	...
Astrometry.net job	3722602
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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NEOWISE (19 July 2020)

NEOWISE (19 July 2020)

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NEOWISE (19 July 2020)

NEOWISE (19 July 2020)

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