Asked by Tsambikos


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)

Answered by bobpursley
You can calculate this readily

theta=1.22 wavelength/aperture

Theta is in radians. Look up the wavelength of light (yellow).
Answered by Tsambikos
Thank you very much!! And what is the answer to this question?
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