Which of these techniques has resulted in the BEST angular resolution of the image?
A) adaptive optics as used with Keck II on Mauna Kea
B) Hubble Space Telescope, an orbiting telescope
C) active optics, as used with the New Technology Telescope in Chile
D) interferometry, as used with the four telescopes of the Very Large Telescope (VLT) at the Paranel Observatory in Chile

Question

Quizplus · Accepted Answer

Interferometry, especially when used with multiple telescopes like the VLT, allows for the highest angular resolution by effectively creating a telescope with a diameter as large as the distance between the individual telescopes. This technique surpasses the resolution limits of single mirrors or lenses, outperforming other methods listed.

Which of These Techniques Has Resulted in the BEST Angular