This framing of the Milky Way in central Cygnus contains a rich assortment of types of nebulas: - Throughout is the pinkish-red lacework of star-formi
This framing of the Milky Way in central Cygnus contains a rich assortment of types of nebulas: - Throughout is the pinkish-red lacework of star-forming emission nebulas made of glowing hydrogen gas, most prominent at top around the star Sadr, in a complex called IC 1318, here partly cut off. - At bottom right is the flower-shaped Tulip Nebula, aka Sh2-101. - A small round nebula at centre left is Sh2-104. - At centre is the magenta Crescent Nebula, aka NGC 6888. While this is also an emission nebula, it is a bubble blown out by a hot star called a Wolf-Rayet star near the end of its life. - The pale arc below it is another example of a Wolf-Rayet nebula, known only as WR134. - The field is also laced with lots of dusty dark nebulas, some very dark such as the distinct Barnard nebula called B145 at right of centre. - Below it is a large region of yellower sky created by less opaque but still light-absorbing dust, a region with a distinct edge catalogued as LDN 862 (Lynds Dark Nebula). So the area is a rich mix of dust and gas in the spiral arm of the Milky Way in which we live, with examples of star formation and star death. This is a blend of filtered and unfiltered images: a stack of 14 x 8-minute exposures at ISO 3200 through an IDAS NBZ dual narrowband filter which recorded the nebulas best, blended with a stack of 15 x 6-minute exposures with a UV/IR cut filter only to record the normal range of visible wavelengths for the naturally coloured stars and sky colours. All with the Sharpstar 61mm EDPH III refractor at , and with the filter-modified Canon EOS R camera, on the Astro-Physics 600E mount and autoguided with the Lacerta MGENIII autoguider. No darks taken, but each frame was dithered (shifted) slightly by a few pixels to help eliminate hot pixels when stacking and aligning. All stacking, alignment and blending in Photoshop. Applications of the Nebula Filter and Dark Details actions in PhotoKemi actions, and of the Detail Extractor filter
Size: 4450px × 6700px
Photo credit: © Alan Dyer / VWPics / Alamy / Afripics
License: Licensed
Model Released: No
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