On 8 Mar 2003, at 21:33, Rainer Kracht wrote: > Last night I captured 14 flashes from the European DSP (DSP 20) > from 22:50:03.2 - 22:50:13.8 UTC with the Mintron 12V1C-EX and > lens 75 mm f/1.3 through thin clouds. An image is at > > http://home.t-online.de/home/R.Kracht/flashes.htm > > The brightest flashes are about mag 7. But they last only > for about two minutes each night. > First flash was at 2003 Mar 07 22:50:03.2 UTC Last flash 22:52:13.8 The integration time for one frame was 1.28 seconds. The FP is about 102*1.28/13 = 10.0 seconds. The brighter flashes look like mag 7 stars in the single frames in which they appear. But the flash duration is much shorter than 1.28 seconds. So I have wrongly compared a short (perhaps 0.1 or 0.2 seconds) flash with star images integrated for 1.28 seconds! The true magnitude of the flashes is about mag 5. Rainer Rainer Kracht Elmshorn, Germany Station 5005 53.7695N 9.6626E 9m Potsdam Datum 53.7679N 9.6614E 47m WGS84 R.Kracht@t-online.de ----------------------------------------------------------------- To unsubscribe from SeeSat-L, send a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@satobs.org List archived at http://www.satobs.org/seesat/seesatindex.html
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