The Pleiades or Seven sisters


Perhaps the most famous star cluster on the sky, the Pleiades can be seen without binoculars from even the depths of a light-polluted city. Also known as the Seven Sisters and M45, the Pleiades is one of the brightest and closest open clusters. The Pleiades contains over 3000 stars, is about 400 light years away, and only 13 light years across. Quite evident in the above photograph are the blue reflection nebulae that surround the brighter cluster stars.

Imaging Data

Date: 9-11-2015

Location : Sudbury, Massachusetts

Optics : Astrotech 111 @ F/7

Filter(s) : None

Mount : Paramount MYT

Autoguiding : Costar Lacerta OAG

Camera : Canon T3i Full Spectrum

Exposure info : 15 x 300 ISO 800

Total Exposure : 1.2hours