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Some of the modular lenses that are known to be used on the ISS include several Nikon F and 15 Nikon Z lenses, for cameras such as the D4 and Z9. [ 21 ] [ 13 ] This includes the Nikon 24-70mm f/2.8E ED VR, the Nikkor 600mm f/4G AF-S VR ED, [ 22 ] the Nikon 800mm f/5.6E FL ED VR, and the Nikon AF-S FX TC-14E III 1.4x Teleconverter .
The human naked eye has an angular resolution of approximately 280 microradians [17] (μrad) (approx 0.016° or 1 minute of arc), and the ISS targets an altitude of 400 km. [18] Using basic trigonometric relations, this means that an astronaut on the ISS with 20/20 vision could potentially detect objects that are 112 m or greater in all ...
The weather and the upper atmosphere play a critical role in getting the best images. McCarthy says forecasts help him make sure he’s getting outside at the right time and a key component is ...
Close to sunset and sunrise, bright stars like Sirius or even Canopus can be spotted with the naked eye as long as one knows the exact position in which to look. Historically, the zenith of naked-eye astronomy was the work of Tycho Brahe (1546–1601). He built an extensive observatory to make precise measurements of the heavens without any ...
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T Coronae Borealis, also known as the "Blaze Star," is actually a pair of stars located 3,000 light-years away. The star system is a recurring nova, with Earth-visible explosions every 79 to 80 ...
The International Space Station (ISS) is a large space station that was assembled and is maintained in low Earth orbit by a collaboration of five space agencies and their contractors: NASA (United States), Roscosmos (Russia), ESA (Europe), JAXA (Japan), and CSA (Canada).
The comet was spotted with the naked eye and photographed by astronaut Matthew Dominick on board the ISS on 20 September, followed by fellow astronaut Donald Pettit two days later. [20] The first naked eye observation of the comet from Earth was reported on 23 September, with the comet having an estimated magnitude of 3.3, while its tail was ...