I could be totally wrong here but I believe I saw the flash of impact from SMART-1 on the Moon the other night.
I was observing from the Anza Valley in Southern California at about 3,400′ altitude. The flash was well into the dark area of the Moon where it was advertised to be. It was faint and short. It came a little later than expected — it impacted at 05:42:21 UT, initial estimates were 05:41.
I was observing with an 8″ SCT and a 35mm plossl.
I don’t think I was imagining things, but I haven’t seen any independent statistics that would confirm that I could have seen it.
I would have posted this sooner but I was travelling for work.