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Details:
Tonight the ISS and Tiangong graced our evening skies running about 3 minutes apart on different orbits. The ISS passed nearly overhead while the CSS pass was more northerly. Both were bright, but the Moon and clouds interfered with continuous observing, and planes were a nuisance too.
Visually, the space stations were quite prominent, but I personally didn't catch both simultaneously--one was leaving as the other one arrived--but photo #1 shows it can happen.
#1: Single shot that demonstrates both space stations were visible at the same time. Taken at 6:26pm MST.
#2: Annotated version of #1.
#3: Cumulative image showing each space station's trail.
#4: CSS and ISS maps superimposed. (Maps from heavens-above.com.)
Stats from heavens-above.com:
...Tiangong:
rises 18:20:37, max alt 37° at 18:25:47, enters shadow 18:26:56
...ISS:
rises 18:23:53, max alt 81° at 18:29:19, enters shadow 18:32:30
Photo data:
Panasonic G9, Laowa 4mm 210° fisheye lens, photo tripod
... 45 x (f/2.8, 15 sec, ISO 800) = 11.25 min
... stacked in startrails.exe, processed in PSP X2
Photographer's website:
No URL provided.
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