A new take on the Soul nebula

my previous attempt on this cute nebula dates back from 25/12/2019, taken at that time with the 120mm Esprit in mosaic.

Now it was one shot with the Sharpstar 76MM F 4,5 with a focal lenght of 243 mm. The ASI2600MC camera was used in combination with an UV/IR blocking filter.

IC1805 or Soul Nebula 76mm Sharpstar F 4,5 156x120s or 312 minutes or 5 hours and 12 minutes on gain 100, processed in AstroPixelProcessor and fine-tuned in Photoshop elements CC. Imaged in Meldert in the night of Novermber 9th, 2021

Attempt to mosaic

After creating the Heart nebula in a mosaic a month ago, we had some semi-clear nights last week, in which I could try and stitch the Soul nebula to the Heart.

Unfortunbately these nights were also very foggy, sometimes fog banks floated over, with barely star visibility. The good news is that SGP (Sequence Generator Pro) kept up trying, despite star loss in PHD, to continue making lights. While sleeping. So that’s really wonderfull.

The end result, needless to say, did have that much gradient sin the final image that I do not consider it a result. It’s more an exercise. The final mosaic had 10.000×12.000 pixels and took 1,5 Gb TIFF or FITS size. Both AstroPixelProcessor and Photoshop had issues digesting this large file. In fact it’s so large that Astrobin or this website cannot upload it.

10% of a 11.000×12/000 pixel mosaic 6-panel.
A 2-panel (part of ) the Soul nebula. It’s clear by the halo’s around the brighter stars how foggy it exactly was.

This is a two-panel mosaic each panel of about 10 300-seconds 800ISO frames with the 120mm Esprit F5,5 and Nikon D750
. The remaining panels on the left of the “foetus” were fogged out.