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SH2-140                               click on image for a wide field lrgb image
Penryn, California
October 2003
FS-128  (ag, ST-4)
ST-10XME HaO3S2 20 minute subs

A faint 30 arc-minute nebula.  Sh2-140 is within the Cepheus Bubble, a 10 degree dust ring surrounding Sh2-140, IC 1396 and NGC 7129.  The dust ring was formed from a supernova approximately 1.7 million years ago which probably occurred within a pre-existing cavity (Abraham, 2000).