Sorry Paul, I looked through my photos and I did not see it. It was either in between 15 second exposures or too faint (or fast) to expose enough to pick it up. I only had the ISO set to 400 and f/2.8, but it was cooking. I don't think I can say how close to on time it was from just my eyeballs - probably within 30 seconds of the prediction on H-A? That was definitely close than UARS was a day before its decay when it was at least a minute early. A friend of mine, however, got a series of 2 second exposures under clear sky in Tucson - he posted his images on spaceweather.com about an hour or so ago. Search for David Harvey. He can probably calibrate his cameras for you and he has a bunch of 2 second exposures that show it quite clearly. Jim. On Sat, 22 Oct 2011, Paul Salanitri wrote: > Hi Jim, > > Excellent! > > Would you have a time (to the second if possible) of the near zenith pass? > (Can you also calibrate camera time [photo a time source]) > > This will help in working out how much the TLEs have drifted by. > > I think if we can get this, we can tune up the TLE prediction (and not have > to wait for space-track). > > > Paul Salanitri > > > On Sat, Oct 22, 2011 at 12:04 PM, Jim Scotti < > jscotti@pirlmail.lpl.arizona.edu> wrote: > >> Just got through watching a pass of ROSAT almost straight overhead (Heavens >> Above predicted 90 degree elevation at max) from Kitt Peak. Unfortunately, >> clouds covered most of its path overhead but I caught 2 brief glimpses as it >> passed near our zenith. It was brighter than predicted - and a bit orangish >> in color but otherwise appeared to be pretty close in time to the H-A >> prediction. I was expecting it to be early and was thinking I must have >> missed it due to the clouds when I caught sight of it thru a small break in >> the clouds. I tried to pick it up later but the clouds kept it hidden, so I >> didn't check my watch for timing until around a minute after I saw it. I >> had my camera with fisheye lens taking exposures, but I haven't downloaded >> them to see if I got it yet. >> >> Jim. >> >> It is difficult to say what is impossible, for the dream of yesterday is >> the hope of today and the reality of tomorrow. - Dr. Robert H. Goddard >> ---------- >> Jim Scotti >> Lunar & Planetary Laboratory >> University of Arizona >> Tucson, AZ 85721 USA http://www.lpl.arizona.edu/~** >> jscotti/ <http://www.lpl.arizona.edu/%7Ejscotti/> >> > It is difficult to say what is impossible, for the dream of yesterday is the hope of today and the reality of tomorrow. - Dr. Robert H. Goddard ---------- Jim Scotti Lunar & Planetary Laboratory University of Arizona Tucson, AZ 85721 USA http://www.lpl.arizona.edu/~jscotti/ _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-l
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