posted on Dec, 15 2009 @ 12:16 PM
BlinkofanEye - Did you have any luck? It was noting but solid cloud here for the post-peak night.
mopusvindictus - I know what you mean about the rate. It can seem higher than it is, since you get very active periods, and then nothing for a while,
but if you average it out over an hour (and ignore non-Geminid meteors) you get a more accurate picture.
I find the Geminids a bit bland in terms of color compared to Leonids and Perseids. This year they were mostly white, with only a hand full of
Geminids showing colors.
The colors are due to the plasma which meteors create as they slam into the atmosphere, and spectral-emission lines detected in meteors come from both
the atmospheric gases (mainly oxygen and nitrogen) and the ablated elements from the meteoroid itself. The velocity is a key factor in which spectral
lines are observed, since some lines need allot more energy input (directly related to velocity) to be detected.
There is some info on the subject in this paper here
It's a shame you had to end your observing early because of the cold. It's very easy to get caught out if you have never tried to observe under a
clear sky for any length of time at this time of year. I had five layers including a fleece and a well insulated jacket, plus a fairly well insulated
sleeping bag to crawl into, and I was just about comfortable (I wouldn't say cosy!).
How did everyone else get on? tracey ace? Alaskan Man?
[edit on 15-12-2009 by C.H.U.D.]