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With clear skies yesterday evening, it was a perfect time to watch the International Space Station make a pass near zenith. Like last month, I set my P1000 camera to video mode while I tracked manually. When I reviewed the recording, I was happy to see that the frames were mostly in focus. The quality was actually one of the best I got with the camera, with most of the modules easily distinguishable. But then I noticed a faint dot next to the station in much of the frames, so I looked up the news.
It turned out that the SpaceX Crew Dragon spacecraft was moving from one docking port to another during those moments. The move only took 39 minutes from undocking (19:31:02) to soft capture (20:10:12), so it was out of sheer coincidence and luck that I was recording while spacecraft was near, but not docked to the space station. The fact that the Crew Dragon's was just big enough to show up in the frames helped, too. The 109-meter ISS was 83 pixels wide at the closest approach, so the Dragon being 4 meters in diameter appeared as a 3-pixel dot. In any case, I was pleasantly surprised to find out that I photographed this occasion. It was something I had on my bucket list.
Device: Nikon P1000
Settings: 3000mm - ISO 200 - 1/1000s - f/8
Time: 2021-04-05 20:05:26-20:06:12 KST
Location: Naju, Korea
432 video frames processed with PIPP 2.5.9, RegiStax 126.96.36.199, and Pixelmator Pro 2.0
While the Sun is up in the sky, the Moon is still visible at the right phases due to its brightness. Although the Int'l Space Station can also become bright, it's only visible shortly before to about an hour after sunset. So when I found out that it was to pass in front of the Moon while the sky was fairly bright (36 minutes before sunset), I wasn't sure of the results. Would it look brighter or darker than the Moon? Would it even be visible when it's not in front of the Moon?
These questions were cleared up when I got the Moon at that moment on video. Because of the uncertainties and the quickness of the pass, I used 4k 30fps recording instead of the usual 7-frame burst mode on the P1000 camera. The prediction calculation was slightly off and the ISS was not centered, but I still managed to get more than 10 useful frames. The fuzziness is due to video compression, but it's far better than nothing. Interestingly enough, the radiators on the space station were quite a bit brighter than the surface of the Moon in general.
When we take a closer look, the prominent features of the ISS are easily discernible. The solar panels are stretching from top to bottom, while the Russian modules Zvezda (right) and Zarya (center) are more illuminated than the multi-national modules on the left. Considering this success, it looks like I should try the video recording again for the next ISS pass.
Device: Nikon P1000
Settings: 3000mm - ISO 400 - 1/1000s - f/8
Time: 2021-03-22 18:10:36 KST
Location: Buan, Korea
12 video frames processed with Pixelmator Pro 2.0