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(meteorobs) August 18/19 obs. DMS Biddinghuizen
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To: betlem@strw.leidenunivdot nl, m.cdot delignie@research.kpndot com, peter@max.arc.nasadot gov, delpsurf@cistrondot nl, jvtleven@interdot nldot net, pvmilnwk@boxdot nl, breukers@pidot net, mcavanvliet@pasti.stm.tudelftdot nl, caroos@pidot net, C.F.Johannink@home.cnt.antennadot nl, rjbouma@pidot net, kuiper@knmidot nl, severin@knmidot nl, meteors@cnt.antennadot nl, hercunet@cucidot nl, lanzing@edte.utwentedot nl, G.J.S.Cladder@sgz.utwentedot nl, astro@groep.edith.antennadot nl, a.w.ploegmakers@cet.hendot nl, pruppers_heuvelsland@pidot net, eddy@cis.HZeelanddot nl, sbir@xs4alldot nl, 101627.2406@compuservedot com, eafrafre@zeelandnetdot nl, imo-news@tu-chemnitzdot de, meteorobs@latradedot com, zenit@astro.rugdot nl, mathlenr@fys.ruudot nl
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Subject: (meteorobs) August 18/19 obs. DMS Biddinghuizen
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From: Casper ter Kuile <pegasoft@cc.ruudot nl>
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Date: Mon, 19 Aug 1996 19:30:27 +0200
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Cc: bettonvl@fys.ruudot nl, neyts@worldaccessdot nl, poerinku@worldaccessdot nl, p.m.koenraad@phys.tuedot nl, gloudema@strw.leidenunivdot nl, m.a.brentjens@fys.ruudot nl, dvgevers@worldaccessdot nl, j.hartman@hsbosdot nl, hhendrik@worldaccessdot nl, vidistar@pidot net
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Reply-To: meteorobs@latradedot com
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Sender: owner-meteorobs
Hello everybody,
The night of August 18/19 was a gentle one. Sky conditions were not optimal
(especially near the horizon) but certainly could have been worse. Limiting
magnitudes near +6.3 typically, not the best for this favourable location.
The Dutch Meteor Society operated a photographic network with three stations
(Biddinghuizen, Varsseveld and Bosschenhoofd). We suspect several
multistation meteors.
Below my VISUAL RESULTS, from observations at our dark site at Biddinghuizen
(52 deg. 29' 16" N, 5 deg. 41' 19" E), the Netherlands. Observations were
conducted from 21:08 to 2:50 UT. A nice activity, though mostly faint
sporadics. Some late Perseids, surprisingly low amount of Cygnids. In total,
I observed 85 meteors in 4.76h effective observing time. All meteors have
been plotted on a gnomonic map.
NB: note that amongst the 'sporadics' a minor fraction of late Aquarids
might be present. Sieving these out will take me some time.
Since I suffered quite some pain (due to health problems) in the early part
of observations, I might not have been optimally concentrated.
UT Teff Lm Nspo Nper Ncyg
21:08-22:05 0.82 6.6 12 1 0
22:05-23:16 1.05 6.5 16 3 1
23:16-0:25 0.93 6.4 11 2 1
0:25-1:29 0.95 6.3 12 2 4
1:29-2:23 0.68 6.3 10 1 0
2:23-2:50 0.37 (5.9) 8 1 -
TOTAL 4.76h 69 10 6 total: 85
Magnitude distributions:
MAG -2 -1 0 1 2 3 4 5 6
Spo 2 2 4 6 11 13 17 11 3
Per - 2 - 1 2 2 2 1 -
Cyg - - - - 2 1 2 1 -
Observations from stations Varsseveld and Bosschenhoofd are not available yet.
At 22:37:00 UT (+- 2 sec.) we noted a large flash coming from 'below' the
eastern horizon. It was also seen by team Varsseveld. Juergen Rendtel
(AKM/IMO) informed us that they noted a fireball from Potsdam (eastern
Germany), about magnitude -5. This could have been the cause of the flash,
though we are a little bit surprised about the reported magnitude, given the
tremendous flash we saw (you would expect at least -10 or something similar).
Tonight seems to be a clear one again. So we will be out in the field again
with at least two stations (Biddinghuizen and Varsseveld. At Biddinghuizen,
Koen Miskotte will also join this night).
Regards,
Marco Langbroek
Dutch Meteor Society, station Biddinghuizen
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