RE: Iridium Flares ground projection

Bjoern Gimle (b_gimle@algonet.se)
Tue, 3 Feb 1998 20:21:20 +0100

>I've wondered about the spotlight projection myself, and don't think it
>would be anything spectacular.  For Randy's 1200km distant Iridium,
>assuming all the light falls in the 10x20km rectangle and the albedo of
>the antenna is 100% (at 188x86cm) the light would be "diluted" (dimmed) by
>about a factor of 8 BILLION! (or about 20 magnitudes from the sun itself).

I'd think the full moon shines at mag -12.4, a bright flare about -8.4,
or only 40 times fainter. Full moonshine is quite bright and casts shadows,
but it still makes forty times fainter really difficult ?


---------------------------------------------------------------
-- bjorn@tt-tech.se (office)  b_gimle@algonet.se (home)      --
-- 59.2237N, 18.2286E, 44 m   http://www.algonet.se/~b_gimle --
-- SeeSat-L / Visual Satellite Observer Home Page found at   --
-- http://www.satellite.eu.org/satintro.html       --
---------------------------------------------------------------