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Catalogue and alternative designations


Type Emission Nebula
Position 23 13 45.7, 61 28 21
Constellation Cepheus
Camera and Telescope QSI 583 WSG, 20cm Maksutov Newtonian courtesy Dean Salman
Focal Ratio F4
Exposure Details HaRGB 440:120:110:120 with Astrodon series 2 filters
Description A fairly bright but not often imaged nebula which is probably overshadowed by the better known bubble nebula (NGC 7635) in neighboring Cassiopeia.  It is about 9' x 6' across and about 9100 light years distant.  NGC 7538 contains the largest known protostar, about 300 times the size of our solar system and is an active region of star formation.