Bubble in HOO (DeepSpaceDad)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: Bubble Nebula · M 52 · NGC 7538 · NGC 7635 · NGC 7654

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Bubble in HOO

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Bubble in HOO

Cassiopeia is a busy place! It's hard to frame any one thing up well without wanting to go in a different direction to catch something else. The three stars in this show are the M52 cluster, on the right, the bubble nebula in the middle, and the brain (or northern lagoon if that grosses you out) nebula on the right. We also have the large HII region, Sh 2-161, on the top and the lobster claw nebula poking up on the bottom. The bubble is my favorite here because of it's unique and relatively easy to capture smooth surface. I've included some crops to highlight the detail that may be lost on social media.

This is an HOO image. Two filters are used. One to isolate the hydrogen II emission wavelength, and one to isolate the oxygen III emission wavelength. As stars emit most wavelengths, they're always captured. Hydrogen is then mapped to the red channel, oxygen to the green and blue. This has the effect of a highly detailed narrowband image that reveals subtle nebulosity while maintaining a natural look.

Technical details

Celestron HD 11" w/ V4 hyperstar

Asi2600MM

Astronomik 6nm MaxFR Ha/Oiii

Celestron CGE w/Onstep

4 hours of 2 minute exposures for each filter

NINA and Pixinsight

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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
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	Image of the day	Top pick	Top pick nominations	Total submitted
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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	4699715
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Bubble in HOO

Bubble in HOO

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Acquisition details

Description

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