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(meteorobs) Re: Leonid eZHR question, plus others
Wayne wrote:
> However, with LM +4.2 and a one minute count of 22, that's
> not out of line. I'm sure my highest one minute count of
> 18 would translate close to 3000. ... When I ran my
> rough EZHR's yesterday I used a 15 minute bin. And as I
> stated, that was really pressing the envelope. I used that
> to figure peak times, not actual ZHR's.
Thanks very much Wayne! That really helps. When I checked
with 15-, 20-, and 30-minute "bins" (kind of like moving
averages), I still got big eZHR numbers, but I can see
there's an averaging effect that still leaves in highs and
lows. One thing is clear, that I should have tried to
continue without a break for a while longer, since they
were still going strong at 11:00:00 UTC!
I wonder if the LM does not tell the full story when it's
foggy, if point sources (stars) can't be resolved and thus
can't be counted towards LM, but a moving and/or extended
object like a meteor can, even though its magnitude is
comparable to a star that can't be resolved.
Final couple of details on my observations. During the
77-minute period 9:43:00 to 11:00:00 I wrote down six
fireballs of -6 or brighter, two "B" for "terminal burst",
and two "P" for "persistent train". I suspect they are
all low counts. Also, when I saw two or more meteors at
once, I'd underline my marks. I underlined 23 pairs, one
triple, and one quadruple. I don't claim that those are
complete or accurate (especially the negative magnitude
estimates), but they are in the category of "I at least
saw these."
I'm about to take off for the USA holiday, and so to
whomever it's appropriate/relevant -- Happy Thanksgiving!
And as always to all: clear, dark nights --
Ed Cannon - ecannon@mail.utexasdot edu - Austin, Texas, USA
http://wwwvms.utexasdot edu/~ecannon/meteorlinks.html
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