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(meteorobs) Observation 22/02/2003



Hi!

If you have answers to the following questions about plotting, please 
post them. Thank you.

1) Whom should the Brno maps with meteor plots be sent to? I guess 
Juergen Rendtel is the right person for German meteor observers and 
the adress from the IMO homepage is correct. Would it also be 
possible to send in starting and ending coordinates of the meteors 
only and keep the maps (so I don't have to make so many copys etc.)?

2) Would it be a bad thing if I use one map for several observations? 
If there are only few plots on one map, should I use a new copy 
for my next observation or is it possible to use it some more often 
(maximum number of meteors on one map?)?

3) Can anyone give me some advice on mesauring the angular speed of a 
meteor? I feel quite unsure about what is meant and how it should be 
measured. Are my plottings valueable without this data at all?


Greetings

Daniel Gruen

-----

Day:22 Month:02 Year:2003 Begin: 20h34m  End: 22h13m

Location  long. E926'20"  latit. N4851'55"

Site: Winnenden-Birkmannsweiler  Country: Germany

Observer: Daniel GRUEN   IMO code: GRUDA

Showers:
 -----------------------------------
| Shw |alpha|delta| Shw |alpha|delta|
|------------------------------------
| DLE | 168| +16| VIR | 168| +05|
|-----------------------------------
| SPO | --- | --- |
 -----------------

Periods:
 ----------------------------------------------------
| Period      |Field    |Teff| F | lm | DLE| VIR| SPO|
|  (UT)       |RA   Dec |  h |   | m  |M| N|M| N|M| N|
|----------------------------------------------------|
| 20:34-22:13 |155|+55|1.53|1.0|5.19|P| 0|P| 0|P| 4|
 ----------------------------------------------------

Magnitude Distribution:
 -----------------------------------------------
|Shower| -3| -2| -1|  0| +1| +2| +3| +4| +5| tot|
|------|---|---|---|---|---|---|---|---|---|----|
| SPO  |   |   |   |1.5|1.0|1.5|   |   |   |  4 |
 -----------------------------------------------

Train Distribution:
 -----------------
|dur.|1s|<*|no|tot|
|----|--|--|--|---|
|SPO |  | 2| 2|  4|
 -----------------
 * these trains persisted only for a few tenth of a second

Meteor Data:
 ------------------------------------------
|No.*| Time|Shw|Mag|Train|Color|Acc.|Map No.|
|----|-----|---|---|-----|-----|----|-------|
|  8 |20:38|SPO|0.5|  <  |     |  2 |   2   |
|  9 |20:48|SPO|2.0|     |     |  3 |   2   |
| 10 |21:25|SPO|0.0|  <  |     |  3 |   8   |
| 11 |21:37|SPO|1.5|     |     |  3 |   1   |
 -------------------------------------------
* the enumeration starts in the 20/02/2003 session

Comments:
There were at least some nice and bright meteors that night,
but the most spectacular thing was probably the little 
earthquake I noticed around 21:00 UT. I thought somebody 
would be pulling on my lawn, but then realised it was an
earthquake. After I went in I saw the first news and found
out that the epicenter was near the German-French border
and it was of 5-6 on the Richter scale.
Back to meteors again, I found it harder to plot as the
meteors had to be plotted on different maps and there was
some wind that made everything more complicated.

-----
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