Messier 14

14 final

Object:   M14 (NGC 6402) Date:               2018 August 31
Type:  Globular cluster
Constellation:           Ophiuchus Time & altitude:          20.20 UT    32º
Catalogue data: Seeing (5 high):                               3/5
            R.A:                17h 38m Transparency (5 high):                   2/5
            Dec:                -3º 15 Telescope:     0.5m f4.1  Dob.
            Magnitude     7.6 Eyepiece       17mm Ethos              x120
            Size (mins)    12 Filters:            None


Locate from 99 Oph. As is often the case at this time of year, transparency overhead is good with NELM better than 5.5m and Milky Way on view but below about 30 degrees it becomes progressively milkier.

I’ve got no resolution of this cluster at x120. Swapping to the 8mm and x260 achieves partial resolution and the cluster looks 3D spherical. Observed diameter is only about 4 or 5 arcmins so as usual in these mediocre conditions I am only seeing the centre.