Re: spaceweather - EQUINOX SUN OUTAGES

From: George Roberts (
Date: Mon Mar 07 2011 - 17:53:24 UTC

  • Next message: Marco Langbroek: "Shuttle and ISS seen with sun at -4 degrees!"

    Think of images of ISS transiting the sun:
    Now realize the geosats are 22k miles versus 200 miles or 100 times smaller 
    plus I'm guessing the ISS is at least 3 times as long as the biggest geosat 
    (probably 8) so that brings us to 300 times smaller.  Or only 100 times 
    smaller than the space shuttle in the above solar transit linked image.
    I guess it's possible but I doubt it.  You won't see any detail.  Just a dot 
    if anything.
    On the other hand, the transit takes 2 minutes versus well under a second. 
    So in a video you might just make out a moving dot.
    - George Roberts
    -----Original Message----- 
    From: Ramon van der Hilst
    Sent: Monday, March 07, 2011 12:33 PM
    To: Seesat-L
    Subject: Re: spaceweather - EQUINOX SUN OUTAGES
    Might it then be possible to see the geosats transit the Sun, or are they
    too small at that distance?
    On 7 March 2011 15:28, Kevin Fetter <> wrote:
    > At spaceweather
    > EQUINOX SUN OUTAGES: Many readers reported an intermittant loss of
    > satellite TV reception over the weekend. Was the sun to blame? Yes and no.
    > It is likely that the sun caused the problem, but not because of solar
    > flares. Now is the time of year for the "equinox conjunction," when the 
    > sun
    > lines up with the satellite and the receiving satellite dish. When this
    > happens, radio interference from the sun competes with signals from the
    > satellite and can create noise levels several decibels higher than normal.
    > The problem, which typically persists for 5 to 15 minutes, is referred to 
    > as
    > a "sun outage" and is often confused with sunspot or solar flare activity.
    > _______________________________________________
    > Seesat-l mailing list
    -------------- next part --------------
    An HTML attachment was scrubbed...
    Seesat-l mailing list 
    Seesat-l mailing list

    This archive was generated by hypermail 2b29 : Mon Mar 07 2011 - 17:54:27 UTC