Observer's guide
About NGC 147
NGC 147 (C17) is catalogued as a galaxy in Cassiopeia. Its J2000 position is RA 00:33:12, Dec +48:30:36, corresponding to 8.3005 degrees RA and 48.5087 degrees Dec. The local catalogue places it about 2,300,000 light-years away. Its referenced angular extent is approximately 12.59 by 7.08 arcminutes.
Observing tips
This is rated as a hard target at magnitude 9.5. It is associated with autumn observing, with midnight placement typically strongest around September. From 52 degrees north its theoretical meridian altitude is about 86.5 degrees; local horizons and the live altitude chart determine the practical window.
Because it is faint, use a larger aperture where possible, avoid bright Moon conditions, and use averted vision.
What to expect
The SIMBAD classification for the matched source is GiG. SIMBAD records the morphology as dGspD.... A published radial velocity value is -193.1 km/s. The SIMBAD record currently connects it to 721 bibliographic references.
At roughly 12.6 arcminutes across, it benefits from a narrower field and adequate image scale. Use the listed 12.59 by 7.08 arcminute extent to check framing, and treat catalogue magnitude as integrated brightness rather than a direct measure of visual contrast.