Damn! I have been away from the whole flat Earth debunking scene for about 18 months, and on my return it seems that there are flat Earthers still spouting their nonsense. Good to see Bob is still smacking them down.
The doppler shift data looks interesting. Given the known original frequency, the shifted frequency, the time taken, and the angle change between shifted and not shifted, is it possible to calculate distance and speed? I suspect it is. I can see the amount of shift gives the if head on speed, but it was passing far away so that speed is a small fraction. With the angle change I think the true speed can be calculated. Can the true speed be calculated using instead the time taken to a shift of zero? Hmm, did you already cover this? Channel hunt time!
Yes those are the calculations and the speed works out to around 7km/s. The altitude, based on AOS and LOS at around 2200km and the curve of the earth, gives an altitude of 400km You are right about the head on vs offset pass with the offset giving a lower value. I’ve not done the math yet
I was fascinated by The Space Walk and would love to have one of those roll out solar panels for my house.Thanks for the video.
Congratulations on getting both the telescope and radio doppler tracking. Looking forward to more.
Damn! I have been away from the whole flat Earth debunking scene for about 18 months, and on my return it seems that there are flat Earthers still spouting their nonsense.
Good to see Bob is still smacking them down.
Good to see smart people fighting the good fight. Even if we only save one flat earther from stupidity it's still worth it.
yep
I only caught a transmission from the ISS once.
But it correlated with a pass.
My comment on what's on the other side of the flat earth was only, tongue in cheek. Ay.
The doppler shift data looks interesting. Given the known original frequency, the shifted frequency, the time taken, and the angle change between shifted and not shifted, is it possible to calculate distance and speed? I suspect it is.
I can see the amount of shift gives the if head on speed, but it was passing far away so that speed is a small fraction. With the angle change I think the true speed can be calculated. Can the true speed be calculated using instead the time taken to a shift of zero? Hmm, did you already cover this? Channel hunt time!
Successful hunt. "ISS and the doppler shift- part 1" on 25 May 2022 on the Bob the science guy channel
Yes those are the calculations and the speed works out to around 7km/s. The altitude, based on AOS and LOS at around 2200km and the curve of the earth, gives an altitude of 400km
You are right about the head on vs offset pass with the offset giving a lower value. I’ve not done the math yet