Observer's guide
About NGC 6266
NGC 6266 (M62) is catalogued as a globular cluster in Ophiucus. Its J2000 position is RA 17:01:12.60, Dec -30:06:44.5, corresponding to 255.3025 degrees RA and -30.1124 degrees Dec. The local catalogue places it about 21,500 light-years away. Its referenced angular extent is approximately 14.1 by 14.1 arcminutes.
Observing tips
StarWatchr rates this as a moderate target at magnitude 6.5. It is associated with summer observing, with midnight placement typically strongest around June. From 52 degrees north its theoretical meridian altitude is about 7.9 degrees; local horizons and the live altitude chart determine the practical window.
A small telescope under reasonably dark skies is a good starting point; use the live altitude chart to choose its highest point.
What to expect
The SIMBAD classification for the matched source is GlC. A published radial velocity value is -74.5 km/s. The SIMBAD record currently connects it to 677 bibliographic references.
At roughly 14.1 arcminutes across, it benefits from a narrower field and adequate image scale. Use the listed 14.1 by 14.1 arcminute extent to check framing, and treat catalogue magnitude as integrated brightness rather than a direct measure of visual contrast.