What Is Chromatic Aberration in a Telescope

question 76

Multiple Choice

What is chromatic aberration in a telescope?

• A) Light of different colors reflecting from the objective mirror of the telescope comes to a focus at different points in front of the mirror.
• B) Light of different colors comes to a focus at different points behind the objective lens inside the telescope.
• C) Light striking the lens at different distances from the center of the lens comes to a focus at different points inside the telescope.
• D) The objective lens varies in thickness from center to edge, and light passing through the different thicknesses suffers different amounts of absorption, thereby coloring the image.

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