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Saturday, December 1, 2018

16 panel mosaic image of North America & Pelican nebula in visual colors


I have publish this photo earlier as a mapped color version, it can be seen HERE

While shooting lights for my Giant Cosmic Squid project, I had to wait few hours every night to the Ou4 to be well placed in the sky. I spent those hours to shoot some frames for North America and Pelican Nebula area. I have shot many details from this area , while making my poster about Treasures of the Swan I noticed that there are many overlapping photos. I shot few missing parts and finally I was able to build a mosaic image from that material.

16-panels are now combined seamlessly to a very high resolution image. Each frame is shot three times, one exposure set for the light emitted by an ionized hydrogen (H-alpha), second set for the light emitted by an ionized sulfur (S-II) and third set for the ionized oxygen. (O-III) Total exposure time used for this image combo is just under 200h! The original resolution is around 16.000 x 16.000 pixels. Frames for this mosaic image are taken between 2014-2018 and I have published many of them them as an individual compositions.


The Grande Mosaic of the North America and Pelican Nebula
Please, click the image to see a large version, it's worth it! (2000x2000 pixels)

 
Image is in Natural color palette from the emission of ionized elements, R=Hydrogen + Sulphur, G=Oxygen and B=Oxygen + 10% Hydrogen to compensate the missing H-beta emission. All photos are shot with a Celestron EDGE 11" reflecting telescope, Apogee Alta U16,a cooled astrocam and the Astrodon narrowband filter set. Photos are shot between the years 2014 and 2018, total exposure time is around 200h.



Details from the image above
Please, click the image to see a large version







Nebula in light from an ionized hydrogen lone (H-alpha)
Please, click the image to see a large version




Orientation
Please, click the image to see a large version

The area of the mosaic image is marked as a white rectangle 





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