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Catalogue and alternative designations DeHt 1, PK 11+17.1, Longmore Tritton 1


Type Planetary nebula 
Position 05 55 06.6, -22 54 02
Constellation Lepus
Camera and Telescope STXL6303E and 36.3 cm Ritchey Chretien 
Focal Ratio F9
Exposure Details Ha:OIII:OIII image with 3nm Ha and OIII Astrodon filters. Ha=270 minutes and OIII=300 minutes.  This was combined with a LRGB exposure of L=120minutes, R=G=B=45minutes

DeHt 1 is a planetary nebula thought to contain an intermediate-period binary central star system ( that is, a system with an orbital period, P, between 100 and, say, 1500 days).  It is large and faint, the diameter being 128".