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(meteorobs) Taurids vs. Leonids

Did anyone else notice how nicely active the Taurids were on 17/18 Nov? 
Of course differentiating between Taurids and Leonids is fairly easy
given the huge differences in meteor velocities and good separation in
radiant location.
				In A.A. - Felix 

On Tue, 21 Nov 2000 16:27:22 -0500 Wayne T Hally <meteors@eclipsedot net>
writes:
> Just a comment, I was well placed to separate the Taurids from 
> Leonids (I 
> won't try and speculate about Apex meteors) and only saw 4 in 6.5 
> hours.
> 
> Wayne
> 
> ----------
> From: 	Wesley Stone[SMTP:wes_stone@altavista.com]
> Sent: 	Tuesday, November 21, 2000 3:29 PM
> To: 	meteorobs@jovian.com
> Subject: 	Re: (meteorobs) Moonlight and the IMO method
> 
> On Tue, 21 November 2000, Rainer Arlt wrote:
> 
> > I would tend to say that the low sporadic rates are mainly due
> > to the fact, that the Leonid radiant is so close to the apex
> > area from where a considerable number of sporadics come in the
> > last morning hours -- just when observers were out for the
> > Leonids. As we had to face a direction not favourable for radiant
> > association -- because of the Moon -- it is very likely that a
> > number of sporadics was simply counted as Leonids. I found my
> > own notes of 17/18 with a single sporadic in about 1h effective
> > time!
> 
> I agree; the apex meteors probably polluted the Leonid numbers to 
> some 
> extent (1-2/hour?).
> 
> Speaking of which: I'm not experienced in interpreting unguided 
> wide-field 
> photos, but can anyone confirm that the "Leonid" on the Sky and 
> Telescope 
> web page "news" report is not a Leonid? Plotting points on a 
> gnomonic map, 
> it looks like the backward trace misses the radiant by a goodly 
> distance to 
> the north:
> 
> http://www.skypub.com/news/images2000/001118news01.jpg
> 
> 
> > It may be interesting to compare this effect (of depleted sporadic
> > numbers during major-shower maxima) among the major showers
> > QUA, PER, LEO and GEM with respect to their different distances
> > from the apex. The GEMs should affect the sporadic rate least.
> 
> I think sporadic pollution may be more of a problem when shower 
> rates are 
> low. I remember getting sporadic rates of 31/hour during the 1997 
> Perseids 
> (103 Perseids in same hour), 25/hour during the 1993 Geminids (73 
> Geminids 
> in same hour), and 28/hour during the 1999 Leonids (73 Leonids). 
> These were 
> all during morning hours with excellent LM (~7). Perhaps sporadic 
> rates get 
> polluted with shower meteors during high rates. In looking at old 
> reports, 
> I think you'd have to investigate whether the observers separated 
> out the 
> minor showers. If Aquarid complex meteors are counted as sporadics 
> during a 
> Perseid observation, or Taurids counted as sporadics during the 
> Leonids 
> (which is probably just as well), the sporadic rates for those 
> observers 
> will be higher.
> 
> --
> Wes Stone
> Portland, OR
> 
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> 
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> `
> end
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