On Saturday, space photographer John Kraus, age 17, captured this magnificent image of the International Space Station transiting the full moon. He took the photo using a Nikon D500 and Nikkor 200-500mm lens on an equatorial mount used for astrophotography. This wasn't a lucky shot. It took John weeks of planning. From Kraus's article at Petapixel:
As the ISS orbits Earth at 17,500mph, or roughly five miles per second, the transit lasted just 0.90 seconds.
This transit was visible from a narrow path stretching from the middle of Florida to the east coast. I was stationed in a very specific location, as being just several tenths of a mile can throw off a planned transit photo.
Given that the transit occurred so quickly, and I was in such a specific location, it’s natural to ask how I calculated the information required to take this photo. Luckily, I didn’t have to, as there’s a website dedicated to finding out transit info.
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