Iris Nebula (Chris Sullivan)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: NGC 7023

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Iris Nebula

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Iris Nebula

A second attempt at a very tough object for me. This is clearly not enough data and I won't have an opportunity to add to it before I leave Germany. It's completely impossible for me to do from home under Philadelphia's light pollution, so this is it. This is kind of disappointing for me since the Iris was my main goal during my time here, but it is 150 times better than my previous attempt, so there's that at least!

Original
B
C
D
Final
E

B

Description: Added some more darks and reprocessed from scratch, but it didn't help much with the noise - that dark nebula in particular is quite difficult. I'll see if I can grab some more data tonight.

Uploaded: ...

C

Description: I was only able to add an additional 8 subs before my computer crashed. This is the object that does not want to be photographed. Clearly not my best work, but far better than my last Iris Nebula.

Uploaded: ...

D

Description: Adjusted levels, hue saturation and reduced star sizes.

Uploaded: ...

E

Description: I managed to add 43 210 second lights and 65 60 second lights before leaving Germany. I messed up my framing, but still managed to make it work.

Uploaded: ...

QHY Users Group
The OSC Club (One Shot Camera)
The refractors!
Cloudy Nights

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Distribution of astrophotographers

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	Distinct awarded users	Total awarded images
Image of the day
Top picks
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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
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Star trails
Northern lights
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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	1710322
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Iris Nebula

Iris Nebula

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Iris Nebula

Iris Nebula

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Description

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C

D

E

Sky plot

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