I have also noticed an orange tinge shortly after the new trusses were installed. Unfortunately I don't have a record of the observation. As we have a large number of passes in November we may have ample opportunity to observe this phenomenon. I say "may" because weather conditions are often cloudy here at this time of year. If I am able to observe them, in order to avoid flooding the list the most practicable way to report these appears to be for me to use the Heavens Above facility to report them and only put occasional summaries in here unless there is anything of particular significance to report on an individual observation. I will be happy to exchange individual emails on observing this phenomenon with any who wish to do so. As I understand it the intention is for the panels to be rotated as required to receive the maximum available solar energy, it will be interesting to observe the effects once this is implemented. Robert Holdsworth Wainuiomata New Zealand 174.948E 41.261S ----- Original Message ----- From: "Robert" <rsmath@yahoo.com> To: <SeeSat-L@satobs.org> Sent: Wednesday, October 25, 2006 10:43 PM Subject: Re: Orange ISS ! > what kind of pass was it? In rough terms, was the sun generally to your > back with the ISS in front of you (or did the ISS pass happen between you > and the sun?) > > From passes before the second pair of solar arrays were added, I've seen > it be a goldish or orangish color when it passes between me and the sun. > When the ISS passes with the sun at my back, it's brighter and whiter. > > I am currently trying to figure out pass quality since the new solar array > was added. So far, I've concluded altitude of the pass plays more of a > part than the general direction of the sun with regard to the observer. > In about 5 pass checks, the ISS is brighter when above 30 degs above the > horizon and dimmer when below 30 degrees elevation. I'm still adding to > my knowledge base by watching passes when I can, but I've pretty much > concluded if the pass is less than 30 deg elevation, it won't be a > spectacular one if it is entirely or mostly below 30 deg elevation. > > my most memorable recent pass was a morning pass with the ISS coming out > of shadow overhead (and fairly immediately becoming as bright as Venus) > and then at about the 30 deg elevation mark on its way towards my horizon, > it rapidly faded in magnitude. The ISS turned from a white, bright color > (venus-type magnitude) to a goldish color (as it faded to probably -1 or 0 > magnitude). > > Robert > > ----- Original Message ---- > From: John Locker <john@satcom.freeserve.co.uk> > To> Subject: Orange ISS ! > > Watching ISS tonight on a low elevation pass ( 37 degs .... 1828 gmt ) I > was > amazed how orange it was ...and how bright . > Quick glimpse here : > http://mysite.wanadoo-members.co.uk/satcom_transits/long.gif at long > range > . > > John ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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