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 others.

Question

Quizplus · Accepted Answer

A filtergram is a photograph of the Sun's surface made using only those photons emitted in a specific spectral line. This allows scientists to study specific features and phenomena on the Sun's surface that are visible only in that spectral line.

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