Flash timing diagram (~116kB) too large for DSat (and not accepted at all on SeeSat) ----- Original Message ----- From: "Björn Gimle" <b_gimle@algonet.se> To: <SeeSat-L@satobs.org>; <DSat@smartgroups.com> Sent: Monday, August 12, 2002 6:51 PM Subject: Re: Meteor 3M rk variable flash period > On Aug 10 I timed 83 flashes and minima of #27006 Meteor 3M Zenith-2 rocket, > from 20:52:08 to 21:00:49, with one gap due to clouds, some to save stopwatch > clicks. I timed intermittently each, every 2nd, 3d or 4th flash/minimum (minima > were easier to identify in the SE) > > It is apparent from the SYNODIC graphs that my accuracy in timing the initial > primary flashes were about 0.1 s, slightly more for the secondaries. Why the > minima, which appeared quite sharp, show a larger spread, I can't explain. > > The primary period was 2.951 s, the secondary 2.957 (which can be expressed as > "the time from primary to secondary increased from 1.4 to 1.5 s during the ~90 s > observation) > > Near culmination one was 2.980, one 3.004 - too bad I couldn't observe the > transition ! > > The period of the minima varied from 2.959 to 2.953 s, probably gradually, > though the chart appears to show a sharp transition. > > > -- bjorn.gimle@tietotech.se (office) -- > -- b_gimle@algonet.se (home) http://www.algonet.se/~b_gimle -- > -- COSPAR 5919, MALMA, 59.2576 N, 18.6172 E, 23 m -- > -- COSPAR 5918, HAMMARBY, 59.2985 N, 18.1045 E, 44 m -- > > ----- Original Message ----- > From: "Björn Gimle" <b_gimle@algonet.se> > To: <SeeSat-L@satobs.org> > Sent: Wednesday, August 07, 2002 5:46 PM > Subject: Meteor 3M rk variable flash period > > > > [Graphs and data on request; DSat allows attachments, but has a size > > restriction] > > > > I observed #27006 on Aug 4 on a pass from near zenith, and noticed a more > > complex flash pattern while it descended in the SSW. 61 flashes were timed, > over > > 269.46 seconds. Near zenith, there was a slightly fainter half-period maximum, > > low in SSW both maxima were quick doubles, or even one double + one triple. I > > tried to time several of the secondary maxima, and used my SYNODIC program to > > visualize the differences between click times and expected peak times of an > > ----------------------------------------------------------------- Unsubscribe from SeeSat-L by sending a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org http://www.satellite.eu.org/seesat/seesatindex.html
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