Observer's guide
About NGC 6913
NGC 6913 (M29) is catalogued as an open cluster in Cygnus. Its J2000 position is RA 20:23:57.77, Dec +38:30:27.6, corresponding to 305.9417 degrees RA and 38.4867 degrees Dec. The local catalogue places it about 4,000 light-years away. Its referenced angular extent is approximately 12.7 by 12.7 arcminutes.
Observing tips
StarWatchr rates this as an easy target at magnitude 7.1. It is associated with summer observing, with midnight placement typically strongest around July. From 52 degrees north its theoretical meridian altitude is about 76.5 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 OpC. A published radial velocity value is -16.9 km/s. The SIMBAD record currently connects it to 258 bibliographic references.
At roughly 12.7 arcminutes across, it benefits from a narrower field and adequate image scale. Use the listed 12.7 by 12.7 arcminute extent to check framing, and treat catalogue magnitude as integrated brightness rather than a direct measure of visual contrast.