by John Chumack
Comet Cardinal C/2008 T2 on 4/17/09 from Yellow Springs, Ohio
16" F4.5 Newt & ST9 CCD 5 minute exposure LRGB
Note its very blue nucleus for such a dim Comet 14.7 mag....there is also a faint outer green coma as well.
It was captured while it was passing by M36 open cluster in Auriga.