This time, for the first time, I tried to shoot the International Space Station, so I would like to introduce that.
The International Space Station (ISS), which came almost directly above, 411 kilometers above the sky
The angle of view in the above photo is equivalent to 12000mm (35mm format)
table of contents
A convenient app that tells you where the ISS is and how it looks
International Space Station (ISS)
This shooting method
photograph
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A convenient app that tells you where the ISS is and how it looks
Following the previously introduced recommended app, Flight Radar 24, the second recommended app, ISS Detector.
This app, the International Space Station, tells you in detail when, where, and how you can see it.
It's an app that gives you most of the information you can think of to see the ISS.
Yesterday evening (March 12, 2021), I looked into the ISS Detector, "When is the best time to see the next International Space Station, ISS?"
Then, at dusk that day, I realized that it was in full bloom.
It's a perfect condition to pass right above Nairobi at just the right time, less than an hour after sunset.
The sky seemed to be sunny, so I immediately started preparing for shooting.
By the way, I saw the app around 16:00.
The ISS and the International Space Station can be seen at any time, but it is difficult to meet favorable conditions. The ISS, which goes around the earth every hour and a half, is definitely in full bloom every day, but it is not always visible, and it is several hours after sunset, several hours before sunrise, and when it passes through the surface of the sun in the daytime. And.
It's a good condition somewhere every day, but I don't see many good conditions where I am.
Of course, if there are clouds, you can't see it under any favorable conditions. The weather is important.
The International Space Station orbits over 400 kilometers.
Even though it is the largest artificial satellite, how far can it be captured?
International Space Station (ISS)
Currently, more than 4000 artificial satellites are orbiting over the earth.
The largest of the many artificial satellites is the International Space Station ISS.
It is a space station where astronauts are always staying.
It is said that the materials were lifted from the earth into orbit in more than 50 times to build this space station.
The space shuttle, which has now retired, is a big success in construction.
More than half of the material was carried by the Space Shuttle.
The size is 73x108x20 (m) and the weight is 344 tons.
In terms of weight, it's about the Airbus A380 with a little fuel.
The construction process is different from building a building on the ground.
It is a building that keeps moving at 7.9 km / s with respect to the ground.
It can be said that it is the ultimate building in human history, built by bringing the global environment to space where humans can live.
It is said that many experiments are conducted every day inside, which can only be done under weightlessness.
At the time of shooting, Japanese astronaut Noguchi is also active on the ISS.
So, I decided to have WIKI check the details.
This shooting method
The equipment this time is a 500mm telephoto lens, a teleconverter 2x and 1.4x double telephoto lens, and a total focal length of 1400mm.
Pixel pitch is important for such super-magnification shooting and cameras, and it is convenient because the smaller the size, the larger the subject will be magnified.
The wide sensor size of the full size makes it a shooting target that has little meaning just to widen the margins. (If it is strong, it is easy to put the subject in the field of view)
Therefore, I used GH4 (3.75μ), which has a narrower pixel pitch than D850 (4.35μ).
Pixel pitch is calculated from catalog data.
Since it is a Micro Four Thirds system, the focal length of 1400mm is equivalent to the angle of view of 2800mm in terms of 35mm.
Since this is my first time, I didn't use a triple teleconverter, which has a focal length of 5.6 times, in consideration of the risk of getting out of sight.
With a camera with a finer pitch, it is possible to magnify even more without optically magnifying.
Recently, CMOS sensors suitable for such high-magnification shooting are sold at low prices, so I'm a little worried.
I hope to buy it and give it a try.
photograph
The ISS emerged from the time and orientation as taught by the ISS Detecter.
After appearing from the southwest, I crossed the sky for about 5 minutes.
The brightness increased at once after it started to be seen, and the maximum brightness was minus 4.6 mag (app estimate), which is quite bright. By the time it passed the zenith, it was brighter than Venus.
During that time, I kept the ISS in the narrow field of view and continued shooting with 4K video.
Focus on a bright star before shooting.
The ISS in the viewfinder of the camera is so small that it looks like a distorted dot.
When I dropped it on a PC and enlarged it, the shape of the International Space Station emerged as it was.
Even though I shot with GH4 and the lowest sensitivity ISO200, a lot of noise has come up.
In order to reduce the noise a little, in the example, several images were composited to finish the image.
It seems that it was better to shake the exposure more positively to suppress the overexposure.
I'm not good at GH4 and shadow noise one generation ago.
I wonder if the color development and tone output of the GH4 is somewhere between GH5 and GH5S, but I personally like the color development the most.
Next time, I'm planning to shoot with the D800E, which uses a triple teleconverter to further increase the magnification (2800mm) and produce beautiful shadow tones.
The 14-bit RAW of the D800E is so promising that it can bring out shadows and highlights so beautifully that it won't compete with the GH4.
It would be extremely difficult to keep this magnification and fast-moving ISS in the field of view, but the range of the full-size field of view will be the same as this time.
After that, I plan to shoot with the D850.
The shadow noise of the D850, really.
For the sake of clarity, the photo below is an enlargement of the photo above to 200 percent pixels.
The solar panels are on the left and right ends, and the inside is the heat dissipation panel that shines brightly and white.
It should be very cold in the space of 400 kilometers above the sky with almost no air, but it is difficult to waste heat and cool it like on the earth, and it is not possible to throw away hot gas and water vapor into the space, so unnecessary heat Will be radiated from this huge heat dissipation plate.
The cylindrical place in the middle is probably the habitation module and the experimental module.
Kibo in the Japanese experimental building is probably on the other side (upper side).
The ISS, a system that uses this 500mm lens, seems to be captured in more detail, so I'm thinking of taking on more challenges.
When I checked the images taken at the same time at a wide angle, a small satellite was flying to the front of the ISS in the direction of travel, and to the bottom of the above photo.
Are you going to dock on the ISS or are you about to leave the ISS and return to Earth?
When I was in high school, I remember seeing Soyuz, on which Mr. Akiyama, the first Japanese astronaut, was rendezvous with a friend from a nearby park.
At that time, I was waiting with my binoculars, and the moment I saw him, I was there !!! Akiyama-san !! In an era when there were no smartphones or apps, only approximate information was relied on in newspapers and news. That's why the joy of finding it was great.
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Until the end Thank you for reading.
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