SLAG
发表于 2025-3-27 00:12:42
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不发音
发表于 2025-3-27 01:16:34
Funktionsbaustein Temperaturkompensation,f our climate, and all in all it is surprising that so much good observational work has been done from here. Yet only once, and then for a brief period, have we had a really large telescope. This was the Isaac Newton reflector, known popularly as the INT.
ATRIA
发表于 2025-3-27 06:49:47
Grundlagen des Ultraschall-Drahtbondens,enhold Observatory in what used to be East Germany there is the Treptow refractor, which has a 27-inch object-glass but a focal length so long - 60 feet — that it looks remarkably like a gun. Amateurs go in for all sorts of designs, such as mounting telescopes on wheelbarrows so that they can be mov
巧思
发表于 2025-3-27 10:28:32
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清真寺
发表于 2025-3-27 13:45:13
David J. Young,James R. McDonaldd to a mechanical drive, and it could never be used for serious photography or spectroscopy. Yet it was by far the most powerful telescope ever built up to that time, and it was used to make fundamental discoveries. Its immense light-grasp meant that it could show objects quite beyond the range of any other existing instrument.
prosthesis
发表于 2025-3-27 18:30:49
Optimierung der Aufspannung und Bearbeitung,iginal reflector; then the Rosse Leviathan, and in the twentieth century the 100-inch at Mount Wilson. Next in sequence comes the Palomar 200-inch, which again was the brainchild of that remarkable man George Ellery Hale.
set598
发表于 2025-3-28 00:35:22
Fachberichte Messen - Steuern - Regelnmore than cancelled out by increased problems of atmospheric turbulence. Certainly the next giant instrument was not a success. In 1976 the Russians set up a 236-inch reflector at Mount Pastukhov, in the Caucasus region, and great things were expected of it.
Affable
发表于 2025-3-28 05:10:21
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Obituary
发表于 2025-3-28 08:21:46
,The “Leviathan of Parsonstown”,d to a mechanical drive, and it could never be used for serious photography or spectroscopy. Yet it was by far the most powerful telescope ever built up to that time, and it was used to make fundamental discoveries. Its immense light-grasp meant that it could show objects quite beyond the range of any other existing instrument.
Comprise
发表于 2025-3-28 11:10:46
Palomar,iginal reflector; then the Rosse Leviathan, and in the twentieth century the 100-inch at Mount Wilson. Next in sequence comes the Palomar 200-inch, which again was the brainchild of that remarkable man George Ellery Hale.