IC1805 Heart and IC1848 Soul Nebulae (Not So NB SOH) (Gilbert Ikezaki)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: IC 1795 · IC 1805 · IC 1848 · NGC 1027 · NGC 896

IC1805 Heart and IC1848 Soul Nebulae (Not So NB SOH), Gilbert Ikezaki

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IC1805 Heart and IC1848 Soul Nebulae (Not So NB SOH)

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IC1805 Heart and IC1848 Soul Nebulae (Not So NB SOH)

Here I'm using drizzle, only starless subframes, and color separation and re-synthesis. Remapping the color palette can make a dramatic difference. Each color map brings out different details. Oxygen in the center, Hydrogen all over but especially at the wave front, and Sulfur at the edges of the expanding clouds. These nebulae are star forming regions of gas being pushed away by a few massive stars in the center. The youngest stars are at the edges of the nebulae, where the stars are formed. Star formation is initiated by the higher pressures cause by the wave of moving gases hitting stationary gases. The gases in these star formation regions are what was left over from supernovae long ago. We know that these gases come from previous supernovae because sulfur with an atomic number of 16 can only be made inside of a star. Oxygen has an atomic number of 8 while hydrogen's is just 1. Hydrogen is lighter than oxygen and the reason why it is being pushed away faster from the big stars in the center.

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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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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.
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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
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Astrometry.net job	1422071
PixInsight job	n/a
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IC1805 Heart and IC1848 Soul Nebulae (Not So NB SOH)

IC1805 Heart and IC1848 Soul Nebulae (Not So NB SOH)

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Image Index:

Contribution Index (beta):

IC1805 Heart and IC1848 Soul Nebulae (Not So NB SOH)

IC1805 Heart and IC1848 Soul Nebulae (Not So NB SOH)

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Description

Comments

Sky plot

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