(meteorobs) Draconids 2012 - visual ZHR graph

Tue Oct 9 13:41:18 EDT 2012

Hi all,

A visual ZHR graph of last night's outburst is now available at
http://www.imo.net

*However*, data covering the outburst has so far only been provided by
Alexandr Maidik (Ukraine, 16h00-18h00 UT) and Jakub Koukal (Czech Republic,
17h00-19h10). While these are very experienced and reliable observers, two
reports are never enough to construct a reliable activity profile. (This is
because different observing conditions introduce different systematic
uncertainties in the ZHR, which can only be corrected by averaging a large
number of independent observations!)

If anyone is aware of visual counts made in Eastern Europe or Asia at the
time of the peak, please shout :-)
In meanwhile, interpret the ZHR values with great caution!

Geert
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