Cassiopeia and Perseus (Andrew_B)

Celestial hemisphere: Northern · Constellation: Perseus (Per) · Contains: Extremely wide field

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Cassiopeia and Perseus

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

Powered byPixInsight

Cassiopeia and Perseus

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

Final image from Sunday night’s session, and once again an experiment in seeing what was possible with just a camera on a tripod and no tracking mount.

A widefield Cassiopeia and Perseus view shot with the X-A3 and Nikkor 24mm f2.8 AIS wide open. The red sensitivity of the Fuji camera again does a good job of picking up various H-alpha regions including the Pac-Man Nebula to the right of α-Cassiopeiae, as well as the Heart and Soul Nebulae just below right of the image centre.

Similar technique and workflow as previous shots. 100 exposures of 15 seconds each at 1600 ISO, stacked in APP, followed by light pollution reduction and star colour correction. Binning, contrast and colour enhancement in StarTools, further cosmetic adjustments in PS 2015, and a final tweak in Apple’s Photos app to get the colour balance right.

Star colours seem better than the other shots, and it hasn’t suffered as much from distortion in the corners, which I presume is an artefact of the stacking process.

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	4415587
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Cassiopeia and Perseus

Cassiopeia and Perseus

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Cassiopeia and Perseus

Cassiopeia and Perseus

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