Observer's guide
About Copeland's Blue Snowball
Copeland's Blue Snowball (C22) is catalogued as a planetary nebula in Andromeda. Its J2000 position is RA 23:25:53, Dec +42:32:06, corresponding to 351.4743 degrees RA and 42.535 degrees Dec. The local catalogue places it about 3,200 light-years away. Its referenced angular extent is approximately 0.38 by 0.38 arcminutes.
Observing tips
This is rated as a hard target at magnitude 8.3. It is associated with autumn observing, with midnight placement typically strongest around September. From 52 degrees north its theoretical meridian altitude is about 80.5 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 PN. A published radial velocity value is -12.2 km/s. The SIMBAD record currently connects it to 942 bibliographic references.
At roughly 0.4 arcminutes across, it benefits from a narrower field and adequate image scale. Use the listed 0.38 by 0.38 arcminute extent to check framing, and treat catalogue magnitude as integrated brightness rather than a direct measure of visual contrast.