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Re: Satellite to the south
[Re: soualigacapt]
#43936
07/20/2015 07:53 AM
07/20/2015 07:53 AM
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Joined: Aug 2000
Posts: 2,628 Southern Maryland suburbs of D...
Bill_S
Traveler
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Traveler
Joined: Aug 2000
Posts: 2,628
Southern Maryland suburbs of D...
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Actually it is the stars that appear to move across the sky as the earth rotates. Back in the days of film cameras I set up a Minolta 35mm SLR on a tripod next to my huge 10 ft satellite TV dish and pointed it at the same area of sky as the dish with a normal lens on a clear, moonless night. I used a cable shutter release that allowed me to hold the shutter open for several minutes for a long time exposure.
I took several time exposures over a couple hours, experimenting with diferent exposure times.
When the film was developed and printed I had several photos that showed the stars as curved streaks (rotating around Polaris...the North Star...) and a string of dots arcing across the sky in a line.
The dots were the geostationary satellites, made visible by the long exposure times and the sunlight bouncing off their shiny surfaces. It was a neat experiment.
Bill
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