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Observing in Winter
Pj Riley
Good news - as the night gets longer,
you have more opportunity to observe. Bad news - the nights also
get colder! Brrr! (gave me a chill just typing it).
I have learned two basic rules in
life that apply to winter observing - one, common sense isn't that common,
and two, state the obvious. So I have included a partial reprint
from NASA.
It contains information about how
to dress when outside in cold weather. Even though it is common sense,
and obvious, I feel it's worth a read. I don't know 'bout y'all,
but I have suffered frostbite - it isn't fun ! I expect you to reach
spring without frostbite!
The article refers to observing an
eclipse, but the info applies equally to stargazin'....
Dressing for
Cold Weather
"Cold weather
requires considerable care in dressing. The secret is to use loose layers
of clothing, leaving lots of room for air pockets to trap heat where it
is wanted. Never underestimate the penetrating power of the cold - you
may be able to walk about at -20° C at home, but you will be much less
active during an eclipse and the cold will penetrate after an hour or so.
Wear thermal underwear, pants and an outer covering (skidoo pants or even
carpenter's coveralls) on your legs. A good winter jacket, preferably down-filled,
will keep you warm above, but layers of undershirts, shirts, and sweaters,
covered by a winter coat will do. Big friends with large ski jackets will
help here, but ski wear is not suitable by itself to handle the low level
of activity when observing in the cold.
Feet deserve
special attention, but the technique is similar to other parts of the body.
Use layers: socks, woolen work socks, down or woolen booties, then a large
pair of winter boots to cover it all. Try to keep it loose if possible
to trap warm air and allow your feet to move and warm up. Don't neglect
the underside of your feet - pick boots with a good thick insole to block
cold coming up through the bottom.
Gloves should
be thin to handle the small parts of the telescope, but your hands will
probably be cold nevertheless. Thin gloves under a larger pair of mitts
work best. Mitts with one or two fingers (usually sold in hunting shops)
are warmest, and fingers can easily be extracted from the mitt to
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