Astro Session - October 18, 2017

October 18, 2017 - Reading time: ~1 minute

The three central and brightest (low magnitude) stars in the open star cluster M45, called The Pleiades or The Seven Sisters: Alcyone (upper middle), Maia (right), and Merope (left). The light of the stars in the Pleiades pass through and illuminate a cloud of dust in the interstellar medium. (8 x 5 minute exposures, 18 dark frames - William Optics GT-81 478mm FL, Atik 414EX Monochrome CCD, Baader luminance filter, CEM25P EQ mount).