Thomas Weiland - Felix Bettonvil · 2019. 11. 5. · Microsoft PowerPoint -...
Transcript of Thomas Weiland - Felix Bettonvil · 2019. 11. 5. · Microsoft PowerPoint -...
![Page 1: Thomas Weiland - Felix Bettonvil · 2019. 11. 5. · Microsoft PowerPoint - WEILAND-Eta-Aquariids_Presentation_v2.ppt [Compatibility Mode] Author: roggema Created Date: 10/30/2012](https://reader034.fdocuments.us/reader034/viewer/2022052016/602e8d66968e9448f100ae05/html5/thumbnails/1.jpg)
ETA AQUARIIDS 2011Thomas Weiland - Felix Bettonvil
![Page 2: Thomas Weiland - Felix Bettonvil · 2019. 11. 5. · Microsoft PowerPoint - WEILAND-Eta-Aquariids_Presentation_v2.ppt [Compatibility Mode] Author: roggema Created Date: 10/30/2012](https://reader034.fdocuments.us/reader034/viewer/2022052016/602e8d66968e9448f100ae05/html5/thumbnails/2.jpg)
IntroductionIntroduction
How to observe the Eta-Aquariids Observing campaign 2011g p g Results Future work Future work
![Page 3: Thomas Weiland - Felix Bettonvil · 2019. 11. 5. · Microsoft PowerPoint - WEILAND-Eta-Aquariids_Presentation_v2.ppt [Compatibility Mode] Author: roggema Created Date: 10/30/2012](https://reader034.fdocuments.us/reader034/viewer/2022052016/602e8d66968e9448f100ae05/html5/thumbnails/3.jpg)
Observing the Eta-AquariidsObserving the Eta Aquariids
Southern Hemisphere: major annual stream (ZHR 45-80)Diffi lt t b f id th l tit d
Radiant height
Difficult to observe from mid northern latitudes Go south!
40 00
60,00
80,00
0,00
20,00
40,00
0 0 0 0 0 0 0 0 0 0 0 0
Netherlands
La Palma
-40,00
-20,00 21:0
0
22:0
0
23:0
0
00:0
0
01:0
0
02:0
0
03:0
0
04:0
0
05:0
0
06:0
0
07:0
0
08:0
0 La Palma
End nautical twilight
-80,00
-60,00
End nautical twilight NL
gLP
![Page 4: Thomas Weiland - Felix Bettonvil · 2019. 11. 5. · Microsoft PowerPoint - WEILAND-Eta-Aquariids_Presentation_v2.ppt [Compatibility Mode] Author: roggema Created Date: 10/30/2012](https://reader034.fdocuments.us/reader034/viewer/2022052016/602e8d66968e9448f100ae05/html5/thumbnails/4.jpg)
La PalmaLa Palma
28.75˚ N High, volcanic, dark clear skiesg , , Astronomical observatory
![Page 5: Thomas Weiland - Felix Bettonvil · 2019. 11. 5. · Microsoft PowerPoint - WEILAND-Eta-Aquariids_Presentation_v2.ppt [Compatibility Mode] Author: roggema Created Date: 10/30/2012](https://reader034.fdocuments.us/reader034/viewer/2022052016/602e8d66968e9448f100ae05/html5/thumbnails/5.jpg)
2011 Observing campaign2011 Observing campaign
May 03/04 to 09/10 New Moon May 03, First Quarter May 10 y y Observers WEITH, BETFE Visual Visual 7 nights, 33 hrs effective observing time Lm 6.30-6.94 (before beginning of twilight) 354 ETAs (including twilight)( g g )
![Page 6: Thomas Weiland - Felix Bettonvil · 2019. 11. 5. · Microsoft PowerPoint - WEILAND-Eta-Aquariids_Presentation_v2.ppt [Compatibility Mode] Author: roggema Created Date: 10/30/2012](https://reader034.fdocuments.us/reader034/viewer/2022052016/602e8d66968e9448f100ae05/html5/thumbnails/6.jpg)
Results - StatisticsResults Statistics
![Page 7: Thomas Weiland - Felix Bettonvil · 2019. 11. 5. · Microsoft PowerPoint - WEILAND-Eta-Aquariids_Presentation_v2.ppt [Compatibility Mode] Author: roggema Created Date: 10/30/2012](https://reader034.fdocuments.us/reader034/viewer/2022052016/602e8d66968e9448f100ae05/html5/thumbnails/7.jpg)
Results - Magnitude distributionResults Magnitude distribution
M i d di ib i SPO
40
54
50
60
Magnitude distribution ETA68
60
70
80
Magnitude distribution SPO
1218 20
4035
1914
1713 13
30
23
20
30
40
BETFE
WEITH21
36
51 48
30
17 15
25
48
20
30
40
50
60
BETFE
WEITH
0 0 0 2 4
129
500 0 0 1
5
13 13
0
10
-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7
0 0 1 1 2 1
12 12
00 0 1 1 15
1117 15
0
10
20
-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7
![Page 8: Thomas Weiland - Felix Bettonvil · 2019. 11. 5. · Microsoft PowerPoint - WEILAND-Eta-Aquariids_Presentation_v2.ppt [Compatibility Mode] Author: roggema Created Date: 10/30/2012](https://reader034.fdocuments.us/reader034/viewer/2022052016/602e8d66968e9448f100ae05/html5/thumbnails/8.jpg)
Results - Population indexResults Population index
SPO ll i di id l d t
3
3,5
4
r - ETA all individual data
3
3,5
4
r - SPO all individual data
1
1,5
2
2,5
3
1
1,5
2
2,5
3
0
0,5
1
3,5 4,5 5,5 6,5 7,5 8,5 9,5 10,50
0,5
1
3,5 4,5 5,5 6,5 7,5 8,5 9,5 10,5
Bl BETFE R d WEITHBlue – BETFE; Red - WEITH
![Page 9: Thomas Weiland - Felix Bettonvil · 2019. 11. 5. · Microsoft PowerPoint - WEILAND-Eta-Aquariids_Presentation_v2.ppt [Compatibility Mode] Author: roggema Created Date: 10/30/2012](https://reader034.fdocuments.us/reader034/viewer/2022052016/602e8d66968e9448f100ae05/html5/thumbnails/9.jpg)
Results - ZHRResults ZHR
ZHR average all data per night
90,00
100,00
ZHR – average all data per night
50 00
60,00
70,00
80,00
90,00
20,00
30,00
40,00
50,00
0,00
10,00
3,5 4,5 5,5 6,5 7,5 8,5 9,5 10,5 11,5
Bl BETFE R d WEITHBlue – BETFE; Red – WEITH
![Page 10: Thomas Weiland - Felix Bettonvil · 2019. 11. 5. · Microsoft PowerPoint - WEILAND-Eta-Aquariids_Presentation_v2.ppt [Compatibility Mode] Author: roggema Created Date: 10/30/2012](https://reader034.fdocuments.us/reader034/viewer/2022052016/602e8d66968e9448f100ae05/html5/thumbnails/10.jpg)
Results – General AppearanceResults General Appearance
Trains: 28 % leave train (78% of bright, 15% of faint ETAs)
Colours mainly yellow and orange, few blue, white and green huesg
Earth grazers: 2 (May 06, May 07)
![Page 11: Thomas Weiland - Felix Bettonvil · 2019. 11. 5. · Microsoft PowerPoint - WEILAND-Eta-Aquariids_Presentation_v2.ppt [Compatibility Mode] Author: roggema Created Date: 10/30/2012](https://reader034.fdocuments.us/reader034/viewer/2022052016/602e8d66968e9448f100ae05/html5/thumbnails/11.jpg)
Results - PhotographyResults Photography
Statistics Photo that I captured with ETAp
![Page 12: Thomas Weiland - Felix Bettonvil · 2019. 11. 5. · Microsoft PowerPoint - WEILAND-Eta-Aquariids_Presentation_v2.ppt [Compatibility Mode] Author: roggema Created Date: 10/30/2012](https://reader034.fdocuments.us/reader034/viewer/2022052016/602e8d66968e9448f100ae05/html5/thumbnails/12.jpg)
Results - ComparisonResults Comparison
IMO live ZHR graph: Increase beyond 30 after May 03, followed by flat maximum (40-60) from May 06/07 onwards until May 10onwards until May 10.
![Page 13: Thomas Weiland - Felix Bettonvil · 2019. 11. 5. · Microsoft PowerPoint - WEILAND-Eta-Aquariids_Presentation_v2.ppt [Compatibility Mode] Author: roggema Created Date: 10/30/2012](https://reader034.fdocuments.us/reader034/viewer/2022052016/602e8d66968e9448f100ae05/html5/thumbnails/13.jpg)
Results - ConclusionResults Conclusion
r and ZHR comparable with previous returns (Cooper, 1996; Rendtel & Arlt, 2009)
Skew maximum. Not untypical. Maximum around May 06/07? Maximum around May 06/07?
Bigger particlesEarth grazersEarth grazers
![Page 14: Thomas Weiland - Felix Bettonvil · 2019. 11. 5. · Microsoft PowerPoint - WEILAND-Eta-Aquariids_Presentation_v2.ppt [Compatibility Mode] Author: roggema Created Date: 10/30/2012](https://reader034.fdocuments.us/reader034/viewer/2022052016/602e8d66968e9448f100ae05/html5/thumbnails/14.jpg)
Future workFuture work
Next time even more south? Namibia? 2019, 2021 and 2022 excellent choices (moon (
phase, Jupiter)