Mosaicing California to Seagull! (12 panel mosaic) (Behnam Darvish)

Celestial hemisphere: Northern · Constellation: Taurus (Tau) · Contains: Extremely wide field

Mosaicing California to Seagull! (12 panel mosaic), Behnam Darvish

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Mosaicing California to Seagull! (12 panel mosaic)

Link to TIFF/FITS: https://drive.google.com/file/d/12MHp5NDx9JSzKg-6HHTLCpf24DqN1c-u/view?usp=share_link

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Mosaicing California to Seagull! (12 panel mosaic)

Link to TIFF/FITS: https://drive.google.com/file/d/12MHp5NDx9JSzKg-6HHTLCpf24DqN1c-u/view?usp=share_link

This is a 12 panel extreme wide field mosaic taken with a modified Canon T2i and a canon 50 mm STM lens at f4. The file is pretty large with nearly 190 Mega pixels and unfortunately I had to degrade it a lot in order to meet the astrobin's size limit which resulted in a pixelated and grainy image. Bummer! I put up the link to the 16 bit TIFF file as well. Data taken over three nights under Bortle 2 (2 nights) and Bortle 4-5ish skies. Each individual panel has a total exposure time of ~ 1.5 -2 hours. Given the exposure time, there is quite a fair amount of dust in the image which shows the power of dark skies. To my surprise, part of the Eridanus loop and its dusty vicinity also appeared. Under Bortle 2, I could see the "Gegenschein" light with my naked eyes which was the cherry on top!

Dealing with such a huge file was my biggest barrier in processing. My laptop could not handle it and everything was snail slow. Each individual panel was first stacked and gradient removed and the stacked images were finally master stacked to make the mosaic with the APP. The mosaic was also finally gradient removed to correct for variation from panel to panel. A few panels had canon banding issue which were taken care of with Siril. Final touches were done with GIMP.

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Description: noise reduced

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Status	Basic success
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Astrometry.net job	6557289
PixInsight job	n/a
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Mosaicing California to Seagull! (12 panel mosaic)

Mosaicing California to Seagull! (12 panel mosaic)

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Mosaicing California to Seagull! (12 panel mosaic)

Mosaicing California to Seagull! (12 panel mosaic)

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