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Catalogue and alternative designations

NGC 7635, Bubble nebula.  M52 in top left corner.

Type Emission Nebula
Position 23 20 48.3, +61 12 06
Constellation Cassiopeia
Camera and Telescope QSI 583 WSG, 20cm Maksutov Newtonian courtesy Dean Salman
Focal Ratio F4
Exposure Details HaRGB 240:90:130:100 with Astrodon series 2 filters
Description NGC 7635 is a faint emission nebula adjacent to the open cluster M52.  It's most characteristic feature is the "bubble" blown by the massive hot star BD +602522.  It is about 11,000 light years distant and its apparent size is about 15' x 8'