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THE ASTRONOMER Electronic Circular No 2695      2010 Dec 19 20.27UT
Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise,  Basingstoke,
Hants, RG22 4PP,England.Telephone/FAX(01256)471074Int:+441256471074
INTERNET: GUY@TAHQ.DEMON.CO.UK      Backup: gmh@wdcc1.bnsc.rl.ac.uk
WORLD WIDE WEB                         http://www.theastronomer.org
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LUNAR ECLIPSE, 2010 DECEMBER 20/21
Richard keen (USA) writes:
This is a mass mailing to observers on all seven continents who have 
observed lunar eclipses in the past and/or have an interest in these 
events.  Once again, I am interested in hearing of your observations of 
next week's eclipse (Monday evening and Tuesday morning, December 20-21. 
Some of you may make "reverse binocular" magnitude estimates, or Danjon 
"L" estimates, or both.  Below are some web links with information about 
the eclipse and about observing methods.

In summary, recent eclipses show that the atmosphere has been clear of 
volcanic aerosols since about 1995, and that this has contributed about 
0.2 degrees to the recent warming.
Your observations will help us understand our earth a little bit more. 
Please send reports to both addresses below (AND A COPY TO THE TA EDITOR 
at: guy@tahq.demon.co.uk)

richard.keen@colorado.edu
richard2keen@gmail.com

For UK observers in the south, the event will be early on Tuesday 
morning (December 21). However when totality starts at 07:40UT, the moon 
will be very low in the west-north-west sky. Mid-totality is at 08:18UT 
but moonset for London is at 08:11UT whereas in Glasgow it will set at 
08:57UT.

For those wishing to undertake Danjon estimates please see:
http://sunearth.gsfc.nasa.gov/eclipse/OH/Danjon.html

For reversed binocular estimates see further information at:
http://sunearth.gsfc.nasa.gov/eclipse/LEmono/TLE2004Oct28/image/TLE2004ke
en.html

More general information, timings and diagrams can be found at:

http://eclipse.gsfc.nasa.gov/OH/OH2010.html#LE2010Dec21T

http://en.wikipedia.org/wiki/December_2010_lunar_eclipse

http://science.nasa.gov/science-news/science-at-nasa/2010/17dec_solsticee
clipse/


Guy M Hurst