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Catalogue and alternative designations

NGC 6888, Crescent nebula, Caldwell 27, Sharpless 105

Type Emission Nebula
Position 20 12.0, +38 21
Constellation Cygnus
Camera and Telescope QSI 583 WSG, 20cm Maksutov Newtonian courtesy Dean Salman
Focal Ratio F4
Exposure Details HaRGB 300:180:180:180 with Astrodon series 2 filters
Description A much studied emission nebula 18' x 12' in size and at about 5000 light years distance. The nebula is being energised by the Wolf Rayet star WR 136 which is the bright star at the centre of the nebula.