NGC 1499 - Hydrogen waves of California nebula (Rafael Schmall)

Celestial hemisphere: Northern · Constellation: Perseus (Per) · Contains: California Nebula · NGC 1499

NGC 1499 - Hydrogen waves of California nebula, Rafael Schmall

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NGC 1499 - Hydrogen waves of California nebula

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NGC 1499 - Hydrogen waves of California nebula

A haze resembling the shape of a California state is located in the constellation of Perseus. It is a visually faint object because its apparent diameter covers more than four full moons of the sky.

The fog, 1000 light-years away, is "activated" by a nearby star, Menkib. The ultraviolet radiation flowing from the star excites the hydrogen, which emits a reddish light when it returns to its ground state.

Although there is no red or even color in the shot, it is actually "all red" because the light came through the binoculars through a special photographic filter. With the exception of Hydrogen alpha, the filter cut off all other wavelengths. The "red mass" has been converted to black and white.

As the Moon appears higher and higher in the sky, normal depth photography becomes more and more difficult as the Moon is "light polluting." For a certain amount of moonlight, these narrowband filters help extend the "astrose season" a bit, and can add some plus to certain normal color (RGB) images.

It’s no coincidence that the California Nebula has been chosen as the theme, as the filter uses a very spectacular ripple. This nebula is just a tiny slice of the extremely spectacular universe that stretches over our heads.

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	Distinct awarded users	Total awarded images
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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
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	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
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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	4424329
PixInsight job	n/a
PixInsight queue size	n/a
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NGC 1499 - Hydrogen waves of California nebula

NGC 1499 - Hydrogen waves of California nebula

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NGC 1499 - Hydrogen waves of California nebula

NGC 1499 - Hydrogen waves of California nebula

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