Moira’s wonderful talk last night on the constellations around Cassiopeia made me look back into my archive for images.  I have reworked this one today – a September 2014 capture of NGC 7789,  an open cluster in Cassiopeia known as “Caroline’s Rose”.  It was discovered in 1783 by Caroline Herschel and catalogued by her brother William.

20 frames of 45 seconds stacked, Nikon D90 through Altair Wave 115/805, ISO 3200.

Simon