The Comet - photo 4

At Williams College in Massachusetts, Steven Souza writes: "Our students observed it last night (October 25th). This image was taken with a 0.6-meter DFM Cassegrain scope and Apogee Alta U9000 CCD camera, unfiltered, with an exposure time of 0.1 second. There's obvious and asymmetric structure to the coma, which is (at about 0:47 UT October 26th) about 2.3 arcminutes across — similar in size to the Ring Nebula, M57."

Huajie Cao, Adam McKay, Steven Souza