The Ghost of Cassiopeia (Ani Shastry)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: 27 Cas) · 27 gam Cas · HD236612 · HD5342 · HD5408 · HD5429 · HD5459 · HD5747 · HD5777 · HD5797 · HD5851 · HD5890 · HD6017 · HD6130 · HD6210 · HD6382 · IC 59 · IC 63 · LBN 620 · LBN 622 · LBN 623 · LBN 625 · Sh2-185 · The star Navi (γ Cas · gamma Cas nebula

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The Ghost of Cassiopeia

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The Ghost of Cassiopeia

It’s eerie looking form created by hydrogen gas being bombarded by violent UV radiation from the blue-giant variable star, Gamma Cassiopeiae, that unleashes 34,000 times more energy than our own Sun, IC 63, or the Ghost Nebula, is part of a much larger nebulous region that spans over 4 times as wide as the full Moon as seen from the Earth.

This image of the Ghost of Cassiopeia was captured with over 15 hours of imaging data in R, G, B and Hydrogen-Alpha, spread over two nights, using a Dreamscope 16” Newtonian Astrograph at a blazingly fast f/3.75, and an FLI CCD camera, that I am currently renting from the remote southern desert of Utah, to hopefully get around the unrelenting cloudy skies over Seattle.

Please note: The following tables are updated every 24 hours.

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	8573023
PixInsight job	41JUZW5NDAR221UXSWEQQ91N3T16YOCS
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	01h00m20s.22
RA (top/left)	00h55m10s.15
RA (top/right)	01h06m22s.31
RA (bottom/right)	01h05m44s.79
RA (bottom/left)	00h54m03s.60

Dec (center)	+60°58′20″.4
Dec (top/left)	+60°13′08″.5
Dec (top/right)	+60°19′22″.3
Dec (bottom/right)	+61°42′37″.6
Dec (bottom/left)	+61°36′16″.4

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The Ghost of Cassiopeia

The Ghost of Cassiopeia

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Image Index:

Contribution Index (beta):

The Ghost of Cassiopeia

The Ghost of Cassiopeia

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