Ion Waves of Comet Neowise July 25, 2020 (Jeff Ball)

Contains: Solar system body or event

Ion Waves of Comet Neowise July 25, 2020

Link: https://www.earthandskyphoto.com/

Ion Waves of Comet Neowise July 25, 2020

Link: https://www.earthandskyphoto.com/

This comet has been a complete blast to follow and image. I have used every focal length from 20mm-50mm-85mm-135mm-400mm. The comet was constantly changing and full of surprises.

My best view was from Spruce Knob on July 18. It was spectacular.

I was motivated by Roland Christen's long focal length detail of the ion tail to take this image from Calhoun County Park in WV. I went with the RASA to get the exposure times as short as possible in order to minimize star trailing as well as to freeze the motion of the tail.

In the end, I ended up stacking 20x30 second exposures in order to freeze the tail "waves" and to improve the signal to noise ration. I did guide on the Comet successfully with the ASI AIR pro.

Roland also posted a GIF showing the rotation of the nucleus and the gas jets associated with that rotation. I am guessing the "wave" in the ion tail is directly related to that gas jet rotating. So long Comet Neowise...you were glorious!

Original
Final
B

NOVAC

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

Image Index:

Contribution Index (beta):

Ion Waves of Comet Neowise July 25, 2020

Ion Waves of Comet Neowise July 25, 2020

Equipment

Acquisition details

Description

Comments

Revisions

Histogram

In these public groups

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

Ion Waves of Comet Neowise July 25, 2020

Ion Waves of Comet Neowise July 25, 2020

Equipment

Acquisition details

Description

Comments

Revisions

Histogram

In these public groups

Notifications

AstroBin is in READ ONLY mode

Sorry :-(

Sorry :-(

Sorry :-(

Are you really sure?

Warning!

Warning!

Are you sure?

Report abuse

Slideshow settings

IOTD/TP stats (last [x] days)

Distribution of astrophotographers

Distribution of subject types

Distribution of data sources

Sorry

Sorry

Share

Upload new revision

Upload uncompressed source (XISF/FITS/PSD/TIFF)

Delete image and all its revisions?

Delete original image?

Delete all other versions?

Delete all revisions?

Delete this revision?

IOTD/TP stats

The following people like this image

The following people bookmarked this image

Warning

Flag malfunctioning thumbnails

Contains

Remove yourself as a collaborator

Plate-solving information