RE: Lunar Iridium Flare #4

From: Matson, Robert (ROBERT.D.MATSON@saic.com)
Date: Mon Sep 11 2000 - 14:48:46 PDT

  • Next message: Ron Lee: "RE: Lunar Iridium Flare #4"

    Congratulations to Ron Lee on his 4th Iridium lunar flare!
    What's your success % up to now, Ron?  Seems you've got
    it down to a science.
    
    > It was visible the entire field of view (perhaps .75 degree).
    
    This shows how accurately Ron had his telescope pointed.  The duration of
    the
    "bright" portion of a lunar Iridium glint is comparable to that of a daytime
    solar
    Iridium glint.  In other words, the spatial extent is extremely limited.  If
    Ron had
    been off by less than 0.4 degrees cross-track, he would have missed it of
    course.  But even along-track, if his pointing (or the prediction) was off
    by half
    a degree, he probably wouldn't have seen it.
    
    I encourage anyone with the appropriate equipment to try for one of these
    rare events while the constellation still has its orientation maintained.
    They
    are only visible 2 weeks out of each month (a week either side of full
    moon),
    and you need to be within a couple miles of the lunar flare track to have a
    good chance of seeing it.
    
    Best,
    Rob
    
    
    -----------------------------------------------------------------
    Unsubscribe from SeeSat-L by sending a message with 'unsubscribe'
    in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org
    http://www2.satellite.eu.org/seesat/seesatindex.html
    



    This archive was generated by hypermail 2b29 : Mon Sep 11 2000 - 14:46:53 PDT