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(meteorobs) IMO-NEWS: Perseid data August 12/13 LANMA
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To: Meteor Observing Mailing List <meteorobs@latrade.com>
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Subject: (meteorobs) IMO-NEWS: Perseid data August 12/13 LANMA
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From: Lew Gramer <dedalus>
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Date: Fri, 15 Aug 97 15:03:48 -0400
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Reply-To: meteorobs@latrade.com
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Sender: owner-meteorobs
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Date: Wed, 13 Aug 1997 17:00:00 +0200
To: betlem@strw.leidenunivdot nl, mcdelign@pidot net, peter@max.arc.nasadot gov,
delpsurf@cistrondot nl, jvtleven@interdot nldot net, pvmilnwk@boxdot nl,
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f.witte@fys.ruudot nl, jnb@worldonlinedot nl
Original-To: betlem@strw.leidenunivdot nl, mcdelign@pidot net,
peter@max.arc.nasadot gov, delpsurf@cistrondot nl,
jvtleven@interdot nldot net, pvmilnwk@boxdot nl, gdv@boxdot nl,
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C.F.Johannink@home.cnt.antennadot nl, rjbouma@pidot net,
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From: Casper ter Kuile <pegasoft@cc.ruudot nl>
Subject: Perseid data August 12/13 LANMA
Cc: PVMILNWK@boxdot nl, 100114.1361@compuserve.com
night report Marco Langbroek, the Netherlands, August 12/13 1997
Hello again,
Well, this is a very good campaign indeed! Again, we have been able to
observe last night, for the 10th night in direct succesion! Such is
unprecedented in the variable climate of our country at the North sea.
Below my data.
At first, it seemed that we would lose this night. Two weak fronts with
cirrus very slowly passed over our country. When we arrived at
Biddinghuizen, the sky still was filled with cirrus. We saw many meteors,
but serious observing just was not possible the first two hours. But around
22:55 UT (0:55 am local time) the cirrus dissolved and observations were
possible. The sky quality was moderate (Lm started at +6.2-6.3 and then got
up to about +6.6) and the lower southern part of the sky kept cirrus, but
the north and the zenith was clear allowing a full cloudless view.
Many meteors were seen, but the number of bright ones was considered rather
disappointing by us. We saw only one true fireball, and one should suspect
more of a maximum night. Indeed, the second half of the previous night saw
more fireball activity.
The fireball was a beautifull blueish -5 Perseid in Camelopardalis at
0:07:10 UT, featuring 30 seconds of persisting train. Besides this one, I
observed only two other negative Perseids this night...!
We had a guest observer this night: Erwin van Ballegoij. He is a regular
meteor observer and probably will join our team at Biddinghuizen
permanently in future.
Well, we have a very satisfied feeling of this Perseid campaign, so I
should not grumble about last night's lack of fireballs. I observed nearly
2000 meteors last week!
For me, the campaign is over now. I would like to go on (and weather would
probably permit!), but after today I have other obligations. So, next the
Aurigids two weeks from now....
- -Marco
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Observer: Marco langbroek (LANMA - MLV)
Location: Biddinghuizen, the Netherlands, 52d 29' N, 5d 41' E
Date: August 12/13, 1997
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UT Teff Lm Per Aqr Cyg Cap Spo
22:55 - 23:21 0.42 6.3 18 2 4 0 13
23:21 - 00:30 1.00 6.6 106 10 8 1 29
00:30 - 01:29 0.87 6.6 89 14 8 0 22
01:29 - 02:15 0.73 6.1 71 5 7 2 21
TOTAL 3.02 <6.6> 284 31 27 3 85 430
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Note: No differentiation in delta and iota Aquarids due to large distance
to radiant. Some Aquarids
might be among the 'sporadics'.
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Stream -5 -4 -3 -2 -1 0 1 2 3 4 5 6
Spor 0 0 0 0 1 0 0 7 29 28 17 3
Per 1 0 0 1 1 6 9 26 59 94 62 25
Aqr 0 0 0 0 0 0 0 2 14 13 2 0
Cyg 0 0 0 0 0 0 1 3 12 7 4 0
Cap 0 0 0 0 0 0 0 1 2 0 0 0
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Leonids-'98? A once (twice?) in your lifetime appearance! You can't afford
to miss it!
Casper ter Kuile, Akker 145, NL-3732 XD, De Bilt, The Netherlands
Phone: +31-30-2203170; Fax: +31-30-2202695; GSM: +31-6-54723974
E-mail1: pegasoft@cc.ruudot nl; E-mail2: casper.ter.kuile@rivmdot nl
WWW: http://www.pidot net/~terkuile/meteors/dms.htm
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