Messier 70

70 final

Object:   M70  (NGC 6681) Date:               2018 July 16
Type:  Globular cluster
Constellation:           Sagittarius Time & altitude:         22.55 UT      6º
Catalogue data: Seeing (5 high):                               2/5
            R.A:                18h 43m Transparency (5 high):                   4/5
            Dec:                -32º 18 Telescope:     0.5m f4.1  Dob.
            Magnitude     8.1 Eyepiece       17mm Ethos              x120
            Size (mins)    8 Filters:            None


At minus 32° declination and 6° altitude I can do little more than say I’ve seen the object. The cluster looks grainy. Checking my sketch with Megastar, the faintest star I have recorded is 11.1m and the perceived diameter is about 1½  arc minutes.