Messier 13

Object:   M13 (NGC 6205) Date:               2018 September 14
Type:  Globular cluster
Constellation:           Hercules Time & altitude:           20.00 UT    55º
Catalogue data: Seeing (5 high):                               2/5
            R.A:                16h 42m Transparency (5 high):                   4/5
            Dec:                36º 28 Telescope:     0.5m f4.1  Dob.
            Magnitude     5.9 Eyepiece       17mm Ethos              x120
            Size (mins)    17 Filters:            None


Resolution right across the cluster. Streams of stars flow out to the N and S, like iron filings in the field of a magnet. At x120 M13 looks very similar to M92 at x260.

Galaxy NGC 6207 12.2m is in the same field of view to the NE. It is a 3:1 oval glow with the long axis aimed approximately at the centre on M13. IC 4617 15.5m is situated midway between the two. It wasn’t immediately visible and I didn’t hunt for it.