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(meteorobs) Leonids 17/18 from Visnjan Observatory - Croatia



Visnjan Observatory, Croatia

Observing group: Tomislav Jurkic, Ana Bedalov, Mirela Orbic
Observer: Tomislav Jurkic
IMO Code: JURTO

LAMBDA 13deg 43min 44sec E
FI 45deg 16min 39sec N
h=246.5 m

Date: 17/18.11.2000.

   UT		LEO	SPOR	LM	 F	ZHR

1:29-1:46	7	1	4.5	1.25	120
1:46-2:01	10	0	4.5	1.25	200
2:01-2:17	7	2	4.5	2.00	210
2:17-2:31	11	0	4.5	1.25	240
2:31-2:46	11	0	4.5	1.11	200
2:46-2:59	8	0	4.5	1.43	210
2:59-3:10	3	0	4.5	5.00	330
			BRAKE
3:34-3:48	17	0	4.5	1.43	420
3:48-3:59	6	0	4.5	2.50	330
3:59-4:13	13	0	4.5	1.25	280
4:13-4:26	15	0	4.5	1.25	350
4:26-4:43	12	0	4.5	2.50	350
4:43-5:00	9	0	4.5	2.50	320
5:00-5:16	1	0	4.0	10.00	210
TOTAL		130	3

r=2
z=1

    -8  -7  -6  -5  -4  -3   -2  -1   0   1   2   3   4   TOT
LEO  1   0   1   2   4   9   13  16  16  22  23  17   6   130
SPOR 0   0   0   0   0	 0    0   0   0   1   1   1   0   3



Generally cloudy weather with low altitude clouds. Observations were made through
holes in clouds. Large oscillations in cloudiness during short periods (from
10% cloud covers to 80% and back to 10% in 10 minutes period was usual weather
behavior). Due to the clouds moving fast across the sky, it was necessary to
change fields of view frequently. Until 3:34 field 
of view centered between Orion and Auriga and between Cassiopea and Auriga.
From 3:34 field of view centered around Ursa Major. Break due to 100%  cloudiness
between 3:10 and 3:34. 
Maximum ZHR observed between 3:34 and 3:48. ZHR is computed only as an approximate
value, with r=2 and no correction for radiant elevation. Observed meteor groupings
of 3-4 meteors within 10-20 seconds and large time gaps between.


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