California Nebula (Jeff Ridder)

Celestial hemisphere: Northern · Constellation: Perseus (Per) · Contains: California Nebula · HD24747 · HD25152 · HD275963 · HD279140 · HD279141 · HD279142 · HD279143 · HD279146 · HD279147 · HD279153 · HD279154 · HD279216 · HD279217 · HD279218 · HD279219 · HD279221 · HD279222 · HD279223 · HD279224 · HD279225 · HD279226 · HD279228 · HD279229 · HD279232 · HD279233 · HD279234 · HD279277 · HD279278 · HD279279 · And 28 more.

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California Nebula

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California Nebula

The California Nebula (NGC 1499) is an emission nebula located in the constellation Perseus. It is so named because it appears to resemble the outline of the US State of California on long exposure photographs. It is almost 2.5° long, but is extremely difficult to observe visually. It can be observed with a Hydrogen-alpha filter, which is one of the filters used to collect the data for this image. It lies at a distance of about 1,000 light years from Earth. Its fluorescence is due to excitation of the Hydrogen-beta line in the nebula by the nearby energetic star, Xi Persei. The California Nebula was discovered by E. E. Barnard in 1884. By coincidence, the California Nebula transits in the zenith in central California as the latitude matches the declination of the object.

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	5326432
PixInsight job	09T2T4500HEHIJ3EAH5WYF2GH54TYBPO
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	04h00m10s.65
RA (top/left)	03h55m38s.56
RA (top/right)	04h04m39s.54
RA (bottom/right)	04h04m47s.40
RA (bottom/left)	03h55m37s.41

Dec (center)	+36°37′35″.2
Dec (top/left)	+36°01′17″.1
Dec (top/right)	+36°00′20″.3
Dec (bottom/right)	+37°13′15″.4
Dec (bottom/left)	+37°14′11″.10

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Contribution Index (beta):

California Nebula

California Nebula

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Image Index:

Contribution Index (beta):

California Nebula

California Nebula

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

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