RS Ophiuchi Nova (8/11/2021) (Dale A Chamberlain)

Celestial hemisphere: Southern · Constellation: Ophiuchus (Oph)

RS Ophiuchi Nova (8/11/2021)

Link: https://chamberlainobservatory.com/index.php/welcome-to-the-chamberlain-observatory-website/photo-gallery/rs-ophiuchi-nova-8-11-2021/

Powered byPixInsight

RS Ophiuchi Nova (8/11/2021)

Link: https://chamberlainobservatory.com/index.php/welcome-to-the-chamberlain-observatory-website/photo-gallery/rs-ophiuchi-nova-8-11-2021/

Object: RS Ophiuchi (RS Oph) is a recurrent nova system approximately 5,000 light-years away in the constellation Ophiuchus. In its quiet phase, it has an apparent magnitude of about 12.5. It has been observed to erupt in 1898, 1933, 1958, 1967, 1985, 2006, and 2021 and reached about magnitude 5 on average. A further two eruptions, in 1907 and 1945, have been inferred from archival data. The recurrent nova is produced by a white dwarf star and a red giant in a binary system. About every 15 years, enough material from the red giant builds upon the surface of the white dwarf to produce a thermonuclear explosion. The white dwarf orbits close to the red giant, with an accretion disc concentrating the overflowing atmosphere of the red giant onto the white dwarf.

On 8 August 2021 the Fermi Gamma-Ray Space Telescope corroborated optical observations made by K. Geary of a new outburst associated with RS Oph, with an estimated visual magnitude of 5.0, a 7 times increase in magnitude. It reached a peak visual magnitude of approximately 4.6 the following day.

In this image, RS Oph Nova is near the center. My plan is to reimage RS Oph in about 30 – 60 days when the nova should decrease in size and present it here as comparison images.

ZWO ASI2600MM Pro
CMOS Imagers
Central USA
Cloudy Nights
PixInsight Addicts
Ritchey Chretien telescopes GSO Family

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	Advanced success
Started	...
Astrometry.net job	4877840
PixInsight job	FUHBPTL0TQDYCX4UWKOO1T8OVQ52OF34
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	17h50m23s.989
RA (top/left)	17h48m58s.930
RA (top/right)	17h51m49s.806
RA (bottom/right)	17h51m49s.793
RA (bottom/left)	17h48m58s.297

Dec (center)	-06°41′46″.44
Dec (top/left)	-06°55′59″.99
Dec (top/right)	-06°56′02″.60
Dec (bottom/right)	-06°27′32″.15
Dec (bottom/left)	-06°27′30″.32

Image Index:

Contribution Index (beta):

RS Ophiuchi Nova (8/11/2021)

RS Ophiuchi Nova (8/11/2021)

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

In these public groups

Image Index:

Contribution Index (beta):

RS Ophiuchi Nova (8/11/2021)

RS Ophiuchi Nova (8/11/2021)

Equipment

Acquisition details

Description

Comments

Sky plot

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?

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