How to find 仙女座星系 (M31)
This guide starts with a large pattern that is easy to recognize without a telescope. Choose the route whose sky landmark is easiest to recognize from your location.
Follow the route from one recognizable star to the next until you reach 仙女座星系 (M31).
仙女座星系 (M31) is 43° above the horizon toward the Northeast.
How to find M31 from Pegasus
First identify the Great Square of Pegasus. Start at Alpheratz, its north-eastern corner, follow the Andromeda star chain to Mirach, and then continue toward 仙女座星系 (M31).
How to find M31 from Cassiopeia
First identify the distinctive W shape of Cassiopeia. Start at Schedar near the middle of the W, then look away from the W toward Andromeda and 仙女座星系 (M31).
