Wesley's Tool-Box

I visited Nangdo island in Yeosu about two hours before the second test launch of Nuri, a.k.a. KSLV-II. This place is about 17km away from the launchpad #2 at Naro Space Center in Goheung and is the closest place that you can watch the launch without any obstruction. The weather was extremely cooperative for photo and video shooting, so I was able to get some really nice photos. The following are some of the major shots I was able to get.

Tiangong is a Chinese space station which was initially launched on April 29, 2021. It is built upon the experience gained from its preceding prototypes, Tiangong-1 and Tiangong-2. It only has the core module (Tianhe) at the moment, but two additional modules (Wentian and Mengtian) are planned to be added this year. Because Tianhe is much smaller and simpler than the ISS, I wasn't sure what to expect when photographing it. Once I did catch it crossing in front of the Moon, I noticed that it looked longer and resembled a candy in a wrapper. That was due to the cargo spacecrafts Tianzhou 2 and Tianzhou 3 docked to the ports.

To see the solar panels on the space station and the spacecrafts, I needed to observe it crossing in front of the Sun. Fortunately, a sighting opportunity took place just two days later and I was able to get a good look. Both the large panels on the core module and the smaller ones on the spacecrafts were visible.

With the shots zoomed in and stacked, you can see the individual parts more clearly. The length of the object is about 38 meters (Tianhe: 16.6m, Tianzhou: 10.6m each), which came out to be about 30 pixels long when I shot it on February 8 at 413km away. This is roughly 1/3 the size of the ISS. If there were no spacecrafts docked, it would have looked much smaller and less distinct. On February 10, it was 576km away, so it came out to be smaller at about 20 pixels. I may be able to get larger Sun-crossing shots in Summer when the maximum altitude of the Sun is higher.

Device: Nikon P1000
Settings: 3000mm - f/8 (ISO 800 - 1/800s / ISO 200 - 1/1250s)
Filters: None
Time: 2022-02-08 19:03:59 / 2022-02-10 12:11:53 KST
Location: Haenam / Gangjin, Korea
20 / 23 video frames processed with Pixelmator Pro 2.3.5
10 / 14 video frames stacked with RegiStax 6.1.0.8

The morning of the new year's day of 2022 was clear, making it great for capturing a nice view. Here's the photo and the video of the observation. I hope everyone have a wonderful year ahead.

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
Filters: None
Time: 2021-04-05 20:05:26-20:06:12 KST
Location: Naju, Korea
432 video frames processed with PIPP 2.5.9, RegiStax 6.1.0.8, 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
Filters: None
Time: 2021-03-22 18:10:36 KST
Location: Buan, Korea
12 video frames processed with Pixelmator Pro 2.0