Stephan Szyman wrote: >I doubt the addition of the new arrays and modules will change the station's >intrinsic brightness by too much, and I'd think in order to be visible >during daylight the brightness would need to reach at least -5 or perhaps >-6? I agree. If you double the reflecting area the magnitude will increase by 2.5*log10(2) = 0.75. Even if you can see bright stars in plain daylight a quickly moving target like the ISS must be much brighter that a quasi stationary star in order to be recognized by the human eye. It might be possible to see the ISS if you have a reference in the sky like the Moon. Actually seeing the ISS in plain daylight is nothing new to me (and a lot of other observers). You just have to watch a solar transit of the ISS. And those transits are bound to become more spectacular with the addition of more solar arrays. I can hardly wait! Gerhard HOLTKAMP Darmstadt, Germany ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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