8P/Tuttle - 2007 December 30
He writes: " What a surprise it was to record a beautiful thin gas tail streaming from the comet on this evening. Our deep exposures of the pair show not only the fine details in the M33 Galaxy, but a huge cyan comets coma, sharp stellar nucleus, and a long thin plasma tail extending to the upper right. This image was taken in a 3 hour long continuous dual stream of data and combined sigma reject directly onto the 7:02 pm data."