Observer's guide
About NGC 7654
NGC 7654 (M52) is catalogued as an open cluster in Cassiopeia. Its J2000 position is RA 23:24:48.40, Dec +61:35:35.4, corresponding to 351.195 degrees RA and 61.59 degrees Dec. The local catalogue places it about 5,000 light-years away. Its referenced angular extent is approximately 16 by 16 arcminutes.
Observing tips
This is rated as an easy target at magnitude 7.3. It is associated with autumn observing, with midnight placement typically strongest around September. From 52 degrees north its theoretical meridian altitude is about 80.4 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 -32.1 km/s. The SIMBAD record currently connects it to 201 bibliographic references.
At roughly 16 arcminutes across, it benefits from a narrower field and adequate image scale. Use the listed 16 by 16 arcminute extent to check framing, and treat catalogue magnitude as integrated brightness rather than a direct measure of visual contrast.