In the image above, north is to the right and east is up. Move your mouse over the image above (on smartphones or tablets: touch it) for an version where the stars have been removed.
This region lies at the border between the constellations Cygnus and Vulpecula. There is a variety of nebulae here, most notably the large emission nebula Sh2-92 (top right), and several small dark nebula designated LDN 798 through to LDN 808 (bottom left). The dark "hole" in Sh2-92 bears the designation LDN 810. Towards the upper left corner, there is another small HII region which bears the name HRDS G062.865+00.932 in the HII Region Discovery Survey.
Sh2-92 is a very large H II region whose diameter exceeds 200 light-years; it belongs perhaps to the outermost edge of the Orion Arm, at a distance of about 14.300 light-years from the solar system. The source of gas ionization in this cloud is a bright Wolf-Rayet star, known as WR 127 (or HD 186943); this star, of apparent magnitude 10.2, is actually a binary star system, in which the secondary component is a blue main-sequence star of spectral class O9V.
Central Cygnus Region, zoom lens photograph.
Sharpless 92 and Environment in Hα, which is part of this image.
Exposure Data
