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Re: (meteorobs) minor showers everywhere ...



Sirko,

Many thanks for your reminding.
  I began to suspect that there were a "new" radiant in northern sky from
November of 1999, and to believe this guesswork from December of 2000. Not
more than 10 men are able to plot ONLY here in China, and they distributed
all over the country. At the beginning, I have 4 useful plots to use. So
far, I've sorted them out for 2 times at least. From last December, I
started to collect more plots from all the country. At last, I got 6 plots
and only 1 of them was useful, I've sorted it out for 1 time. I used these 5
plots to find the radiant. In the first 4 plots, there were 30 meteors from
the possible radiant in Auriga, and in the last one there were 7 meteors
(37, totally). All the plots I used were ploted in 1998 and 1999, and I
checked them out in 2000 without plots.
  The plots I use were from very different place, one was at 116.54E,
39.89N; one was at 117.35E, 32.93N; three were at 116.75E, 40.55N; the one I
checked it was at 117.58E, 40.40N.
  So, I'm not able to think all these won't help you.

All best wishes and Clear skies!
Huan Meng   meteorobs@263.net


----- Original Message -----
From: Sirko Molau <molau@informatik.rwth-aachen.de>
To: <meteorobs@jovian.com>
Sent: Friday, February 09, 2001 12:59 AM
Subject: (meteorobs) minor showers everywhere ...


> Folks,
>
> > Europe should have low Leonid rates this year, so observers who will
stay
> > here will be able to look for the possible radiants.
>
> .. and video cameras don't care about the Leonid activity at all (as
> Richard mentioned before). They will record any non-Leonid meteor even if
> the Leonid rate is storm-like. I don't like to repeat myself, but you
> do not have to wait until next November. The were hundreds of non-Leonids
> recorded during the recent November campaigns. *If* there really was some
> minor shower active in Auriga or elsewhere, it should have manifested
> itself in the video data. We do have pictures from each individual meteor,
> so if something is found we may re-analyse the interesting meteors for
> highest possible accuracy.
>
> BTW, I don't think statements like "I saw a few suspicious meteors but did
> not plot them" will help us a lot. There are always sporadic meteors
> (regardless of the Leonid activity), and there are always sporadic
> fireballs. It has been discussed more than once on this list that we have
> by-chance alignments of sporadics in every night, which may look like the
> radiant of a minor shower. If you really want to pin down such a shower,
> you need to plot and later analyse your data carefully at the desk. Even
> more, you will need to collect observations (plots!) from other observers
> in order to improve the statistics. If a minor shower has a ZHR of one or
> two, you will see only very few shower members even when observing the
> whole night. If it's ZHR is 10 or more, it will most certainly have been
> recognized by other observers before unless you are the only witness of a
> rare outburst.
>
> I'm really not suggesting that IMO's meteor shower working list is
> complete. New minor showers have been been detected before (just check the
> recent IMC proceedings for contributions from our Polish observers, for
> example), but these were based on accurate plots and data collection of
> many observers.
>
> Best regards,
> Sirko
>
> PS: What I find personally most intriguing is the fact, that new
> showers are in most cases not suspected by the most active visual
> observers, but by occasional observers. This is not meant to offend
> anybody, please, but I would expect that those who log hundreds of hours
> each year (not me :-) should have most experience and much better chances
> to detect a new shower.
>
> --
> **************************************************************************
> *  Dipl.-Inform. Sirko Molau                  *                          *
> *  RWTH Aachen, Lehrstuhl fuer Informatik VI  *              __          *
> *  Ahornstr. 55, D-52056 Aachen, Germany      *       " 2B v 2B "        *
> *                                             *                          *
> *  phone: +49-241-8021615                     *             Shakespeare  *
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> *  email: molau@informatik.rwth-aachen.de     *                          *
> **************************************************************************
> *  www  : http://www-i6.informatik.rwth-aachen.de/Colleagues/molau       *
> **************************************************************************
>
>
>
>
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