I observed with the 12" Dob from 2am to 4am this morning and there was no dew! Started with all the nebulae and PNe I could think of, using a UHC filter, then looked at clusters and galaxies. I independently "discovered" a SN in NGC 7793, but I see it was found by Monard on 25/3.
http://www.cfa.harvard.edu/iau/lists...upernovae.html.