M1 - The Crab Nebula (scottj05)

Celestial hemisphere: Northern · Constellation: Taurus (Tau) · Contains: M 1 · NGC 1952

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M1 - The Crab Nebula

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M1 - The Crab Nebula

It's great when the weather forecast is wrong...a tale of shooting through the gaps!

Two days ago, I was watching the weather forecast and hoping for an opportunity to shoot the Crab Nebula. However, the forecast was showing 75% coverage for high clouds. So, I was not expecting to be able to shoot that night. However, about 7pm I went outside and used my visual weather forecaster ( my eyes ) and low and behold it was clear...easy to see Orion, Cassiopia, Polaris, Vega, etc...

So, I fired up my AAP and was shooting the Crab Nebula just before 7:30pm. At around 10pm, it needed to do a meridian flip and I stayed up to babysit it. It flipped, re-guided and re-focused with no issues. I just tweaked the focus a little bit better and picked a little stronger guide star and off it went for the remainder of the session.

I set up autorun for a 100 shot session ( Optolong Extreme, ASI183MC Pro and an ED152CF scope ) for 4 minute exposures at bin1, gain 111 and -10C cooled temp.

After starting again after the flip, I went to bed. It continued to run but I found out that on the 53 shot, high clouds did roll back in because shots 53 - 100 all looked like some kind of flats/darks combination.

With the 52 good shots, I processed them in PI and here is the result.

The moral of the story is don't believe every weather forecast and shoot through the holes!

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	4138256
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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M1 - The Crab Nebula

M1 - The Crab Nebula

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M1 - The Crab Nebula

M1 - The Crab Nebula

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