Which of the following two telescopes has a better angular resolution? 1) the Hubble Space Telescope (2.4 meter aperture) at optical wavelengths and 2) the Very Long Baseline Array (VLBA), a radio interferometer with a maximum baseline of 8600 km observing at 1 mm wavelengths. (Please answer with either HST or VLBA)

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  1. well, what is wavelength of visible light?
    for resolution it is the ratio of wavelength to distance between slots that matters.
    for your radio it is
    1^10^-3 meters / .6*10^ m

    the lower the wavelength to baseline, the sharper

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  2. Thank you!

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