Object: M45 Camera: Meade DSI-Pro II
Date: 10-2/2006 Lens: Pentax 135mm lens
Total Exposures: Ha 40' Subexposures: 8 minutes each
Location: West Boylston, MA
Processing: Description:
M45
Known pre-historically. Mentioned by Homer about 750 B.C. and by Hesiod about 700 B.C.

The Pleiades are among those objects which are known since the earliest times. At least 6 member stars are visible to the naked eye, while under moderate conditions this number increases to 9, and under clear dark skies jumps up to more than a dozen (Vehrenberg, in his Atlas of Deep Sky Splendors, mentions that in 1579, well before the invention of the telescope, astronomer Moestlin has correctly drawn 11 Pleiades stars, while Kepler quotes observations of up to 14).