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Catalogue and alternative designations

Cave Nebula, Sh2-155

Type Emission Nebula
Position 22 57 17, 62 28 33 
Constellation Cepheus
Camera and Telescope QSI 583 WSG, 20cm Maksutov Newtonian courtesy Dean Salman
Focal Ratio F4
Exposure Details 580 minutes  Hydrogen Alpha with Astrodon 3nm filter
Description A very dim emission nebula contained in an even dimmer nebula complex in Cepheus.  The distance is 2400 light years and the dimensions are 50' x 30'.