Hey Lee can you check something for me please, since you have SNP. I updated the orbital info for C/2007 F1 Leonos and 8P/Tuttle in my software. If I have done this correctly these two comets should cross each others visual path and come within 1 deg of each other on 29-05-08 and stay that way each night until 2-06-08. I am not sure that I have updated it all correctly and I cannot work out how to make the magnitudes correct any more. However if I am correct and they are both at visable mags then they will both fit into the FOV of most low power EP's. Now that would be something to see, two comets in one FOV.
Edit: I just found the RA & Dec co-ordinates for them and their mag listings for the above dates, on a website. It would appear that I am correct in the positioning of them, but unfortunately Tuttle will be mag 14 and Leonos will be mag 16 at this time
. Oh well maybe someone with a huge scope will get some beneift from this post.