Wednesday, October 24, 2007
17P/Holmes in Perseus
Anyone familiar with the constellation Perseus will notice an interloper in this image taken on Wednesday night from my front yard. Even with a nearly full moon nearby, comet 17P/Holmes is an easy naked eye object as it burst in brightness by about 14 magnitudes over its recent brightness estimates of just a few days ago! In this image, Perseus is near center with Cassiopiea in the upper left corner of the image. The brightest star in Perseus - Alpha Perseus - is near the center. The comet is immediately below it making a sideways right triangle with the star just below and right of Alpha Perseus. To help find the comet in my image and in the sky, here is a Sky & Telescope website with that information. This image was taken at 24mm focal length with an exposure of 30 seconds at f/4, ISO 400.