Cassiopeia's Ghost (DustSpeakers)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: 27 Cas) · IC 59 · IC 63 · The star Navi (γ Cas

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Cassiopeia's Ghost

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Cassiopeia's Ghost

The Ghost of Cassiopeia (IC 63) and IC 59 are both faint reflection and emission nebulae located close to the bright star in the image, gamma Cas or Navi, which is the middle star in the W shape of the constellation Cassiopeia. They are about 610 light years away from us.
Both nebulae are faint (at about +10 magnitude) and Navi is about +2.15 magnitude so it can be a challenge imaging them in the same field. The nebulae are about 3 light years away from Navi although 'The Ghost' is slightly closer making it higher in Hydrogen alpha emission than it's neighbouring nebula.

Equipment:
- Redcat 51 (250mm focal length at f/4.9)
- ASI1600MM mono camera
- HaRGB filters in EFW filter wheel
- ZWO EAF focuser
- Ioptron GEM28 mount

Acquisition:
20,21 Jan 2023
- 20 x 60s each RGB for stars
- 50 x 600s Ha
with camera sensor at -15degC
About 8.7 hours in total

Processing:
APP, StarTools and Gimp.

William Optics CAT Series
WO Redcat 51 Group
Narrowband imaging
Suburban Astrophotography
UK Astro-Imaging
ZWO ASI1600MM/QHY163M

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	Basic success
Started	...
Astrometry.net job	7036137
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Cassiopeia's Ghost

Cassiopeia's Ghost

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Cassiopeia's Ghost

Cassiopeia's Ghost

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