Comet Catalina (RonAdams)

Celestial hemisphere: Southern · Constellation: Virgo (Vir)

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Comet Catalina

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Comet Catalina

Due to the weather I've not been able to image and when that happens I usually look back over

old image folders to see if there is anything I can reprocess and improve. Today I decided to

reprocess several images of comets. These images were taken with my Nikon D3000 and that

camera did not have a very good signal to noise ratio. My Nikon D5300 has a much better signal

to noise ratio and I rarely have to deal with bad noise issues. For me processing an image of

a comet is difficult especially when there are bad noise issues and heavy light gradients. And

please notice that I said for me because I'm sure there are many imagers that have no problem

what so ever. It is difficult to remove heavy noise and light gradients without degrading the

relatively dim tail of the comet. So that's basically what I was doing with my reprocessing.

Trying to remove noise and light gradients yet still preserve the data captured in the tail.

With all of that said please enjoy my image of Comet Catalina taken on 12-15-15 and reprocessed

today 8-28-17.

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.

Status	Basic success
Started	...
Astrometry.net job	1706906
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Comet Catalina

Comet Catalina

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Image Index:

Contribution Index (beta):

Comet Catalina

Comet Catalina

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

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