Ghost Nebula & Iris Nebula (Nick Evans)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: HD200775 · Iris Nebula · LBN 487 · LBN 495 · LDN 1170 · LDN 1172 · LDN 1173 · LDN 1174 · LDN 1177 · NGC 7023 · Sh2-136 · T Cep · VdB141

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Ghost Nebula & Iris Nebula

Powered byPixInsight

Ghost Nebula & Iris Nebula

30 Hours on these feint reflection nebula targets paid off!

Capture
This was a multi-night capture, mostly captured in Bortle7 of my backyard, i got maybe an hour or two at a bortle3-4 dark site integrated as well. The ASI air automation made it possible to not run out of steam. I made an effort to frame both targets in a majority of the data, but i combined it with data i had captured of just the iris nebula too.

Processing
All processed with WBPP, I don't know what I would do without a NAS (Network Attached Storage) because PixInsight took 300GB just to process this data. I carefully processed this with starnet to separate out the clouds from the stars, and used a soft mask stretch on the core of Iris to bring out a little detail on the overexposed portions. I only used one set of flats for the whole set, (which isn't best practice), but keeps a bit of my sanity as I capture over multiple nights.

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	8389340
PixInsight job	L3T2XBFS67Y8GLKUO9KCKMSTA0PYU6XW
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h07m54s.16
RA (top/left)	21h11m28s.68
RA (top/right)	20h56m15s.41
RA (bottom/right)	21h04m37s.100
RA (bottom/left)	21h19m39s.80

Dec (center)	+68°07′33″.7
Dec (top/left)	+69°10′16″.6
Dec (top/right)	+67°59′33″.3
Dec (bottom/right)	+67°04′32″.3
Dec (bottom/left)	+68°12′23″.7

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Ghost Nebula & Iris Nebula

Ghost Nebula & Iris Nebula

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Ghost Nebula & Iris Nebula

Ghost Nebula & Iris Nebula

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