The Ghost of Cassiopeia - IC63 (GiffS)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: 27 Cas) · 27 gam Cas · HD236578 · HD4931 · HD5015 · HD5071 · HD5149 · HD5233 · HD5342 · HD5408 · HD5409 · HD5429 · HD5459 · HD5501 · HD5747 · HD5797 · HD5851 · HD5890 · HD6017 · HD6048 · HD6073 · HD6130 · HD6182 · HD6210 · HD6382 · IC 59 · IC 63 · LBN 620 · LBN 622 · LBN 623 · And 4 more.

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The Ghost of Cassiopeia - IC63

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The Ghost of Cassiopeia - IC63

Not sure what I was thinking trying for this object. It's very faint and the brightness of Gamma Cassiopeiae (the nearby large star) makes getting the exposures right tricky. I am not satisfied with the result yet but it's a start. Still for only 5 hours of exposures it's okay. This image was processed using the HA/OIII separation script in Siril then recombined using Pixel Math.

The Ghost of Cassiopeia is, as the name suggests, located in the constellation of Cassiopeia near the big bright star that is the point star in the middle of the "W". The nebula is being shaped by radiation coming from that star, Gamma Cassiopeiae. Gamma Cassiopeiae is a blue-white unpredictable subgiant variable star. Located 550 light years away, Gamma Cassiopeiae is a staggering 19 times more massive than our sun and 65,000 times brighter! It is rotating at more than 900,000 miles per hour. The radiation being ejected from the star is eroding away the cloud of dust.

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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	8700147
PixInsight job	PH7WOO7LGZUOAXBH1KPD8U21DKY0JQ9L
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	00h59m27s.37
RA (top/left)	01h06m49s.41
RA (top/right)	01h07m29s.10
RA (bottom/right)	00h51m38s.13
RA (bottom/left)	00h51m52s.13

Dec (center)	+60°54′48″.6
Dec (top/left)	+59°57′07″.4
Dec (top/right)	+61°49′15″.5
Dec (bottom/right)	+61°50′52″.6
Dec (bottom/left)	+59°58′36″.5

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The Ghost of Cassiopeia - IC63

The Ghost of Cassiopeia - IC63

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The Ghost of Cassiopeia - IC63

The Ghost of Cassiopeia - IC63

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