Messier 11

11 final

Object:   M11  (NGC 6705) Date:               2018 July 16
Type:  Open cluster
Constellation:           Scutum Time & altitude:         22.20 UT      32º
Catalogue data: Seeing (5 high):                               2/5
            R.A:                18h 51m Transparency (5 high):                   4/5
            Dec:                -6º 16 Telescope:     0.5m f4.1  Dob.
            Magnitude     5.8 Eyepiece       17mm Ethos              x120
            Size (mins)    14 Filters:            None


My favourite Messier. Innumerable stars are seen with the full range of magnitudes from 8 down to the limit of what the telescope will show. There are two main concentrations of stars taking the shape of rectangular patches with a bridge of stars between them. The E edge of the cluster is defined by a conspicuous stream of 11th magnitude stars running exactly NS.