how far can one see using the second one?
From about 3 μm (0.003 mm) to 180 μm (0.18 mm).
Telescope
On the other hand, the Spitzer Space Telescope, observing from about 3 μm (0.003 mm) to 180 μm (0.18 mm) uses a mirror (reflecting optics).
what is h ii region? A region of interstellar atomic hydrogen that is ionized. where is it located? The Orion Nebula, the Eta Carinae Nebula, and the Berkeley 59 / Cepheus OB4 Complex. how far is it from earth? Sometimes several hundred light-years across. when was it first observed? 1610 and by whom? Nicolas-Claude Fabri de Peiresc who was he? French astronomer, antiquary and savant. did he like collecting things? Yes, he was an avid art collector. what kind of art did he prefer? He became the first admirers and supporters of Caravaggio in France. when did he first start his career as an astronomer? UNANSWERABLE what object did he use to observe the orion? Telescope can you tell me something more about it? An optical instrument using lenses, curved mirrors, or a combination of both to observe distant objects. how many types of it are there? James Clerk Maxwell Telescope, Spitzer Space Telescope, and Hubble Space Telescope.
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Telescope [SEP] Types
On the other hand, the Spitzer Space Telescope, observing from about 3 μm (0.003 mm) to 180 μm (0.18 mm) uses a mirror (reflecting optics). Also using reflecting optics, the Hubble Space Telescope with Wide Field Camera 3 can observe in the frequency range from about 0.2 μm (0.0002 mm) to 1.7 μm (0.0017 mm) (from ultra-violet to infrared light).