How large should a telescope be to resolve stars w/ diffraction-limited optics at wavelength of 2 micrometers?


telescope
Regina asked:


Two identical stars are moving in a circular orbit around one another, with an orbital separation of 5 AU (Sec. 2.6) The system lies 150 light-years from Earth. If we happen to view the orbit head-on, how large a telescope would we need to resolve the stars, assuming diffraction-limited optics at a wavelength of 2 µm?
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This entry was posted on Thursday, March 11th, 2010 at 12:00 am and is filed under Astronomy & Space. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

One Response to “How large should a telescope be to resolve stars w/ diffraction-limited optics at wavelength of 2 micrometers?”

  1. Roman Soldier Says:

    angle = 1.22 * wavelength / diameter

    Now do your own homework. Roman Soldier

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