[amsat-bb] ARISSat in sunlight

2011-09-25 Thread John Heath
Interesting thread regarding  MET and ARISSat-1 switch on.   Someone made the very good point that the transition in or out of sunlight (eclipse) is not an on/off event. I remember many MIR visuals, and as she passed from sunlight in the west to darkness in the east there was a significant

[amsat-bb] ARISSat in sunlight

2011-09-25 Thread Simon Pack
Using Orbitron 3.71 software, I can tell that the penumbral duration today was 9 seconds. However, this will vary in the future as the angle of the orbit to the sun changes. However, the first sunlight the satellite will get will be very red (due to the blue light scatter caused by the