Re: ISS Daytime Lunar Transit Visible?

From: Tom Wagner (sciteach@mchsi.com)
Date: Fri Jul 23 2004 - 04:41:12 EDT

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    > John Locker wrote:
    > > Catching the station in daylight ( without the aid of a transit ) is a
    task
    > > I have yet to achieve...but I am sure it can be done Tom.
    
    > Would using a filter to chop out the blue end of the spectrum help?
    > Perhaps even using a webcam with the internal filter removed to use
    > a bit of IR too.
    
    > Ed.
    
    I tried a polarizing filter between my eye and the eyepiece when Saturn was
    near the moon in a blue sky at about 90 degrees (I think it was) from the
    sun and that helped significantly to increase the contrast. The blue sky
    gets bluer by the greatest amount 90 degrees from the sun. That also happens
    to be where the sky looks bluest. The bluer the sky, the better the
    polarizer works.
    
    Tom  Iowa  USA
    +   +   +
    
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