Milky Way Core mosaic (ChrisG_BNE)

Contains: Extremely wide field

Milky Way Core mosaic

This image is the fulfilment of a year long plan to do a high resolution mosaic of the milky way core.

I started planning the fine detail in earnest 6 weeks before travelling, and was planning to do it as a 12 panel dual camera mosaic with a 35mm and 50mm camera lenses - however after some trials those two lenses did not work well together. So I swapped to a 20 panel dual camera 85mm (294MCP) + 50mm (Ha+183MMP) plan. The plan was setup in Telescopius and imported into ASI-AIR Pro.

I had three nights booked around new moon in Bortle 1/2 skies and was hoping to get 90mins per panel over the course of the three nights - but weather had other idea's completely scuttling the first night and the latter half of the second night. A full clear night on the final night allowed me to acquire 40mins per panel.

During setup on the first night I had issues with the 50mm Ha combo and did not get enough data to make any improvement to the data here. So this data is only the OSC data with the 294MC + 85mm camera lens + UV/IR filter.

The full resolution of the image is 13,489 x 11,270 pixels. Each panel was stacked in APP and stretched and exported as TIFF. TIFF's were cropped for stacking artefacts and mosaic was generated with Microsoft ICE. After 4 rounds of modifying individual panels in APP and checking the mosaic I was relatively happy and passed the mosaic through Starnet to check the background stitching. After 3 further rounds of modification and Starnet I had something with a reasonable uniform background. Final smoothing of the mosaic panel overlap done by hand in ACDSee.

This is by far the smoothest and cleanest mosaic I have every produced and I couldn't be happier with the outcome for the limited data gathered.

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
Artificial satellite

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.
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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 failed
Started	...
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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