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Re: (meteorobs) Meteor Elevation Data
Another, cruder way to do this is to record "Constellation in which
seen" as per BAA forms, I guess. How about the effect of the twilight
arch on perrsistent train durations, which falls out fromthis. During
our summer at these latitudes (>50 N), Perseiids occurring in the
northern half of the sky are in daylit atmosphere, and often have
longer-duration trains than those in, say, Aql in dark sky...
Presumably the excitaton state of the sunward atmosphere is higher,
and sustains additoonal/train ionisation longer? Probably not
noticeable from US latitudes, where you guys have the benefit of dark
skies (and fewer verminous satellites trailing across your photos)
than here, but perhaps interesting nonetheless?
Neil Bone
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