Astronomy Cast

Astronomy Cast takes a fact based journey through the cosmos as it offers listeners weekly discussions on astronomical topics ranging from planets to cosmology.

Comet 17/P Holmes

... surprised astronomers around the world with a spectacular eruption. On October 23 it brightend almost a millionfold from mag 17 to mag 2.5 in just a few hours. The above image was taken on October 31 at Guidestar Observatory through the 14 inch telescope. It shows the inner green coma and some dark structures near the nucleus. A Larson-Sekanina filter was applied to the luminance channel to bring out the streamers and subtle jets (click on image to enlarge).

Comet 17/P Homes 17P LS-Filter