Re: ISS solar transit observed

From: Robin R. Wier (
Date: Sun Feb 10 2002 - 20:02:05 EST

  • Next message: Kevin Fetter: "Re: ISS solar transit observed"

    Hi Ron,
    I have only a casual and very amateur interest in satellite
    observations, but your post is very intriguing. You must have seen a
    silhouette solar pass lasting a second or less, with no visible
    approach? Good job! Lucky you didn't blink!
     Lee wrote:
    > CAUTION:  Failure to use adequate and proper eye protection when viewing
    > the sun can cause permanent eye damage.
    > One hour ago at 14:53:46 PM local MST (21:53:46 UT) on 10 Feb 2002
    > I observed the ISS transiting the sun.  I used an 8 inch Celestron with
    > front mounted solar filter.
    > The prediction was made using Rob Matson's Skymap to find a reasonable
    > close transit, then modifying the observation lat/long until the transit became
    > a near central event.
    > In this case, I decided to use the latitude of a road that goes far enough east
    > then kept adjusting the longitude.  The total distance travelled was 45 miles.
    > I was set up 10 minutes before the event and my watch alarm was set to go
    > at 14:53 local.  Just after the beeping quit, I saw the ISS clearly.  It
    > appeared
    > to have the long axis parallel with the velocity vector with the solar arrays
    > at the front.
    > I wanted to videotape it but using the P23C I could only observe perhaps 1/8th
    > of the sun...not enough.  If anyone know of a way to get the full sun (perhaps
    > a focal reducer) with the P23C, please advise.  I have a few more events in the
    > next week.
    > Excellent prediction from Skymap.  Although it appeared to be slightly east of
    > predicted, it was within a second.
    > Ron Lee
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