You can find Comet Holmes by using the “W” of Cassiopeia as your guide [map]. The five stars in a conspicuous zigzag pattern are high in the northeast sky during the mid-evening hours.
Draw an imaginary line from the star Gamma Cass down to Delta Cass (known also as Ruchbah). Extend the line downward about five times the distance between these two stars and you’ll come very close to where Comet Holmes is. The comet itself forms a triangle with Alpha Persei (known also as “Mirfak”) and Delta Persei.
If you have binoculars, you’ll know the comet immediately when you see it: a small, albeit distinct, circular lemon-yellow cloud of light. A small telescope will help bring out the fuzzy details.
The moon, which was full on Oct. 26 and whose brilliant light hindered comet viewing to a degree, is now diminishing in phase and rising later in the night, allowing viewers an increasing window of dark sky before the moon interferes.
