California Nebula (NGC 1499) in SHO (Dylan Chapman)

Celestial hemisphere: Northern · Constellation: Perseus (Per) · Contains: 46 Per) · California Nebula · NGC 1499 · The star Menkib (ξ Per

California Nebula (NGC 1499) in SHO, Dylan Chapman

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California Nebula (NGC 1499) in SHO

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California Nebula (NGC 1499) in SHO

Gold Mountains Under a Blue Sky

NGC 1499, also known as the California Nebula, is one of the largest emission nebulae in our night sky. It spans approximately 2.5 degrees, or about five times the size of the full Moon. Its name comes from its similar shape (when zoomed out) and size (being only roughly 450 billion times larger) to California. At around 1,000 light years away and 60 light years across, the gases in this nebula are ionized by the blue supergiant star Menkib, shown near the top center of this image. This star is over 12,000 times brighter than the Sun and 30 times its mass; it is one of the hottest and most massive stars that can be seen with the naked eye.

This image shows sulfur mapped to red, hydrogen to orange, and oxygen to blue. Stars are a PixelMath combination of hydrogen and oxygen data ran through PhotometricColorCalibration.

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	Distinct awarded users	Total awarded images
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	Image of the day	Top pick	Top pick nominations	Total submitted
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	Image of the day	Top pick	Top pick nominations	Total submitted
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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.

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Astrometry.net job	9346596
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California Nebula (NGC 1499) in SHO

California Nebula (NGC 1499) in SHO

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California Nebula (NGC 1499) in SHO

California Nebula (NGC 1499) in SHO

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