Sadr Area Nebulosity (mikebrous)

Sadr Area Nebulosity

Here's one of Sadr which has become the target to test with in the early evenings since it was conveniently overhead at dusk. lol

This is about 68 subs of various ISO's. Some with the GSO 8" F/4/MPCC combo and some with the GSO Coma Corrector in place of the MPCC. I had to combine the data sets with Registar since the focal length changed using the new coma corrector.

I didn't want the data to go to waste since I had so much of it.

The breakdown is 32x180 sec @ ISO 800, 30x180 sec @ ISO 3200 and 6x180 sec @ ISO 1600. Only the ISO 3200 shots were using a combination Lumicon Deep Sky filter and IDAS-LPS filter. The rest were just the IDAS-LPS filter.

Mixing the Lumicon/IDAS data with the IDAS only data actually works out pretty well. I get to mix the good star colors of the IDAS with the great nebulosity/low LP of the Lumicon/IDAS combo. The only problem is this only works in cold weather, since shooting at ISO 3200 is the only way I can get the hump off the left side of the histogram with the guiding limitations I have at the moment.

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.

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