grichard
Member De-Luxe
Sorta weird that the star tracks look longer in my photo, even though I think I stopped my photo after MECO. (Well, it was cold out...) No idea why.
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I noticed that too. My guess is the second photo was taken looking north while yours was more towards east. You can see in that photo that the streaks (arcs actually) are not at the same angle, and some stars don't have streaks at all.Sorta weird that the star tracks look longer in my photo, even though I think I stopped my photo after MECO. (Well, it was cold out...) No idea why.
Great Pic! Why don't you send to Earth Sky.I'm in Crescent Beach, so yeah, my camera was pointed kind of southeast. I think the real difference may just be that I'm zoomed in more, since I was probably farther from the launch site than the other photographer.
wow, speed increase of 2300 km/hr in just the last 10 seconds. How many Gs is that ?
You need to actually measure the time in the last launch from 7200km/h to 9500km/h.- Previous launch to LEO to Space Station, MECO happens at around 60 km altitude with a speed of 6000 km/hr at exactly T+2:25 minutes
- Current launch to GEO, MECO happens at 74 km altitude at 9500 km/hr at T+2.44
This time though the first stage was at 7200 km/hr at the same T+2:25 mark was burning for additional 10 seconds, at ended up with a much higher 9500 km/hr speed. So it seems there was more fuel and also was burning much faster with a lot more higher thrust.
wow, speed increase of 2300 km/hr in just the last 10 seconds. How many Gs is that ?
Confirmation of BrassGuy's answer comes from examining the least-north stars in Richard's photo, and the furthest-north ones in BrassGuy's: their lengths approach each other.I noticed that too. My guess is the second photo was taken looking north while yours was more towards east. You can see in that photo that the streaks (arcs actually) are not at the same angle, and some stars don't have streaks at all.
I bet you the limit was 4gs and it was fully respected, 7200km/h was achieved around 7 seconds sooner, since for a 4g limit, 2300km/h would take 16.6 seconds to happen.
Then 3.3g is the average for the last 20 seconds.Oops my bad. 7200 km/hr at 2:25, and MECO at 9500 km/hr at 2:45 - that is a delta of 2300 km/hr over a period of 20 seconds and not 10 seconds.
You are right.
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Congrats SpaceX on successful launch. Keep up the great work!