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Wednesday, December 5, 2018

Grande mosaic of Cygnus in visual colors, 18-panels, 150 hours and 22 x 14 degrees of sky


Yesterday I published a mapped color version of this nebula complex, here is the version in visual spectrum.

I have originally published this image back at December 9, 2011 After that I have shot many details out of this are of sky with much longer focal length instrument. Mainly with Celestron Edge 11" reflecting telescope. I have now updated this photo with a new image material and I thought, that it's a good time to republish this updated image again.

The Great mosaic image of constellation Cygnus has 18 individual panels stitched together seamlessly. Each panel has shot three times for a color image. First I shot the light from an ionized hydrogen (H-alpha), then light from an ionized sulfur (S-II) and last the light from an ionized oxygen (O-III). The final image has a resolution of 15.000 x 10.000 pixels. I shot all frames with the Canon EF 200mm f1.8 camera optics at full open, QHY9 astrocam and Baader narrowband filter set.

There are no noise reduction, star reduction or sharpening used for this mosaic. It's very well in focus due to temp compensating focuser I made for this lens. (At f1.8 the critical focus zone is about 7 metric microns.)

Grande mosaic of Cygnus in natural colors
Please, click for a large image, it's worth it! (3600 x 2300 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. 



A full 1:1 scale details from the mosaic image above
Please, click for a large image, it's worth it! (2000 x 2000 pixels)

A full 1:1 scale detail from the upper left corner of the mosaic image, lots of stars up there!



A full 1:1 scale detail from the middle right of the Cygnus mosaic image.


Wonders of Swan

I have made a collection out of the photos I have shot from this area of the sky. I have used 517 hours of exposure time to capture details from Cygnus between 2009 and 2018. I used this material to update my mosaic image of the Cygnus constellation. Full listing and detailed information can be found from here: https://astroanarchy.blogspot.com/2018/11/treasures-of-swan.html


Orientation in the sky
Click for a large image








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