Tuesday evening Comet C/2008 T2 (Cardinal) was passing through the same field of view as open cluster Messier 38 in constellation Auriga. The comet was discovered by Rob D. Cardinal from University of Calgary on Oct. 1, 2008. It is currently around magnitude +9 in brightness. It is expected to peak in brightness in June.
There are more opportunities to view and photograph it. On Friday, April 17th, the comet passes just north of Messier 36. Next Wed/Thurs it passes about a degree south of M37.
Image Credit: Brian Kimball, Longmont Astronomical Society
Brian acquired the image with a Takahashi E180 Astrograph and SBIG ST2000XM with Astrodon filters, total of 46 minutes of exposure.
If you are interested in observing comets you might check the AL Comet Club.