In message <199608290727.CAA02529@mail.utexas.edu> Ed Cannon writes: > Hi, > > I just read your message on SeeSat-L (well, I use SeeSat-D): > > >Incidentally, I only captured 27 meteors in 5 hours of videotaping - down by > a > >factor of 5 (with the same equipment) from a few years ago. I also > videotaped > >5 satellites, 1 bird, and 0 UFO's. > > > >R. B. Minton > >Colorado State Director of Investigations > >Mutual UFO Network (MUFON) > > I don't know anything about the sensitivity of the videocamera (as I don't > own one), so your message made me curious. Three years ago [?] I counted > 80 meteors in four hours. This year, on Aug. 13, 5:30-7:30 UT, I observed > at least 46, 8 or 9 of which were not Perseids. As this was at least 24 > hours after what I understood to be the maximum, it surprised a little to > see so many. I was about 30-35 miles northwest of Austin, TX, probably at > about 800 feet altitude. I'm not good at this, but as I could see all of > the 7 or 8 "dipper" stars of Ursa Minor, I think the limiting magnitude was > about 5.0. (The dimmest one was right at the borderline of visibility.) > So, can we see more than the camera does? Or did I just happen to look at > a good time? > > By the way, I've never seen a UFO but think I would be thrilled if I did! > (Maybe I enjoyed "Close Encounters of the Third Kind" too much? For my > 18 months or so on the Net I spent a LOT of time with alt.alien.visitors.) > > Thank you in advance for any reply. > > Regards, > > Ed Cannon > ecannon@mail.utexas.edu > Hello Ed: The URL for Sky & Telescope reported a fair number over Hawaii, so I strongly suspect there were dense portions in the meteor stream. We will have a much better idea after all the reports are in & analysed. My video setup uses an F/2 lens of 5" focal length, so the field of view is only 8 degrees, but it records down to magnitude 9. So it goes to 4 magnitudes fainter than you could see; but it has only a very small fraction of the total field of view visible to the naked eye. The visual observer would thus see more bright ones and the video would pick up the fainter one - so we are really measuring 2 different components of the meteor stream. I too have never seen a UFO. I once met J. Allen Hynek as a guest speaker at our astronomy club. I told him of the thousands of hours I had spent observing and had always recognized the strange things I had seen (a long list). His simple response was "well then, you have never seen a UFO". My regards to you too. R. B. Minton -104.7932, +40.0876, 4525 ft.