Ou4, The Squid Nebula (Bob Rucker)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: HD201344 · HD201429 · HD202214 · HD202380 · HD239582 · HD239618 · HD239626 · LBN 445 · LBN 449 · LBN 453 · Sh2-129

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Ou4, The Squid Nebula

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Ou4, The Squid Nebula

This project has taken a month to complete on account of a pretty active Arizona monsoon season. I managed to dodge dust storms and clouds and collect enough data with the Evostar 80ED to see how the result might differ from my previous effort with my Zenithstar 61. This time I also had a couple of new tools that helped a lot. First and foremost is my new ZWO AM5 mount. There have been plenty of positive reviews on this mount and my experience echoes the rave reviews. A guiding range of 0.28" to 0.65" for 1,000 second exposures has made me a very happy camper!

I also purchased a Baader Varilock adjuster which helped me dial in my back spacing. The last 2 sessions of my Oiii data incorporated a new Antlia 2.8nm Oiii filter. I noticed a nice improvement over the Optilong 6.5nm Oiii filter and based upon these results, I'll probably look to upgrade my Ha and SII filters in the near future. I debated about discarding my Optilong 6.5nm Oiii data and reshooting more with the Antlia filter but decided that I wanted to move onto a new project. I want to see how the AM5 handles my EdgeHD 8.

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	Distinct awarded users	Total awarded images
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	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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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
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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	8398850
PixInsight job	NHLPQZ5YP6M65BYXK7CUD0W2ICMKZJTT
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h11m26s.240
RA (top/left)	21h15m06s.759
RA (top/right)	21h01m49s.205
RA (bottom/right)	21h07m59s.999
RA (bottom/left)	21h21m04s.270

Dec (center)	+59°55′25″.69
Dec (top/left)	+61°02′24″.35
Dec (top/right)	+59°54′22″.66
Dec (bottom/right)	+58°48′01″.73
Dec (bottom/left)	+59°53′50″.34

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Ou4, The Squid Nebula

Ou4, The Squid Nebula

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Image Index:

Contribution Index (beta):

Ou4, The Squid Nebula

Ou4, The Squid Nebula

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