Comet PANSTARRS C/2011 L4, imaged from the San Gabriel Mountains (near Mt. Wilson) between 4:30 a.m. and 5:00 a.m. on April 19, 2013. The picture shows the comet’s broad, fanlike dust tail spreading for several million miles away from the sun.
Multiple guided exposures were combined, resulting in an exposure of 4 minutes, 30 seconds. A Canon 20Da was used at ISO 1200 through a 5.5-inch diameter f/3.5 Celestron Comet-Catcher Schmidt-Newtonian telescope. (Image by Anthony Cook, Griffith Observatory).
- Comet PanSTARRS C/2013 X1 was visible during evening hours in July, 2016.
- Comet LINEAR 252/P was visible during early morning hours in April, 2016.
- Comet Lovejoy C/2014 Q2 was visible during evening hours in January, 2015.
- Comet Lovejoy C/2013 R1 was visible before dawn in December, 2013.
- Comet ISON skimmed the sun’s surface in late November, 2013.
- Comet Lemmon C/2012 F6 was visible in May, 2013.
- Comet PANSTARRS was visible in March, 2013.
For information on comets that may presently be visible to amateur astronomers, visit Weekly Information on Bright Comets.