A filtergram is a photograph of the sun's surface made
A) in a band of wavelengths in the infrared.
B) in a band of wavelengths in the ultraviolet.
C) using the Zeeman effect.
D) with only those photons emitted in a specific spectral line.
E) none of the above.

Question

Quizplus · Accepted Answer

A filtergram is a photograph of the sun's surface made with only those photons emitted in a specific spectral line. This allows astronomers to study specific features or phenomena on the sun's surface, such as sunspots or solar flares.

A Filtergram Is a Photograph of the Sun's Surface Made