Astronomy current events question: Magellan Telescope adaptive optics

Astronomy 210L, fall semester 2013
Cuesta College, San Luis Obispo, CA

Students are assigned to read online articles on current astronomy events, and take a short current events quiz during the first 10 minutes of lab. (This motivates students to show up promptly to lab, as the time cut-off for the quiz is strictly enforced!)

Daniel Stolte, "UA Astronomers Take Sharpest Photos Ever of the Night Sky," August 20, 2013
http://uanews.org/story/ua-astronomers-take-sharpest-photos-ever-of-the-night-sky

The Magellan Telescope in Chile with its new Adaptive Secondary Mirror (ASM) compensates for images blurred by atmospheric turbulence by:
(A) filtering out light pollution.
(B) selecting only visible light wavelengths.
(C) making long-exposure infrared images.
(D) using specially designed filters.
(E) continuously adjusting its shape.

Correct answer: (E)

Student responses
Sections 70178, 70186, 70200
(A) : 1 student
(B) : 4 students
(C) : 4 students
(D) : 7 students
(E) : 40 students