1. The Double-Station Observations from Sternwarte Herne and Herford
Bernd Brinkmann, Sternwarte Herne
MOD WS#3, , ESA Noordwijk

2. The location:
overview of Germany
Herford
Herne

3. The location:
distance 120 km

4. The stations: HERMINE, operated by Bernd Brinkmann, Herne
Mintron with 6 mm f/0.8
Computar lens in weatherproof housing
MINCAM2, operated by Jörg Strunk, Herford
HERMINE, operated by Bernd Brinkmann, Herne

5. HERMINE: weatherproof housing with heated entrance window

6. Entrance of video and power cable into the building

7. The view to the northeast: in the foreground is the dome of the planetarium of Sternwarte Herne

8. The area where HERMINE looks at: notice the chimney and the cooling towers

9. First evaluations: Perseides (04.-24.08.2008)
vg (km/s)
a (AU)
q (AU) e
p (a)
Ω (°)
ω (°)
i (°)
H1 (km)
H2 (km)
own measurements (all samples) 47
57,96 ± 2,04
6,10 ± 41,1
0,94 ± 0,018
0,86 ± 0,13
15,09
140,57 ± 3,32
147,54 ± 5,1
112,41 ± 2,5
107,0
94,2
own measurement (only ) 16
58,22 ± 1,92
5,71 ± 48,3
0,94 ± 0,015
0,86 ± 0,12
16,63
140,59 ± 0,45
147,61 ± 4,2
112,46 ± 2,3
107,3
93,1
Literature * 87
59,38
71,4
0,953 ± 0,009
140,19 ± 3,3
151,3 ± 2,3
113,22 ±1,5
* Peter Jenniskens, Meteor Showers and their Parent Comets, Cambridge University Press, 2006, p.740

10. Statistic 2008 Ø Station Herford: ~50% Ø Station Herne: ~20% Datum BBJS 11 5 6 8 34 96 47
156 65
158 61 57 16 49 55 10 30 41 21
Ø Station Herford: ~50% Ø Station Herne: ~20%

11. Statistic 2009 Month BB JS double January 438 176 38 February 95 37 6
March
169 55
April
218 85 61
May
214 59 36
June
118 1
July
290 99
August
1245
542
260
September
537
163 72
Oktober
630 18
November
326
107 25
December
470
124 40

12. all double station radiants in 2009:

13. all ground traks in 2009 with Q2:

14. all orbits in 2009 with Q2:

15. Pole view of Perseid orbits in 2009 with Q2:

16. Top view of Perseid orbits in 2009 with Q2: