What problem do refractor telescopes have that reflectors don't?Group of answer choiceslight loss from secondary elementsbad seeingchromatic aberrationspherical aberrationdiffraction limited resolution
Question
What problem do refractor telescopes have that reflectors don't?Group of answer choiceslight loss from secondary elementsbad seeingchromatic aberrationspherical aberrationdiffraction limited resolution
Solution
Refractor telescopes have a problem known as chromatic aberration that reflector telescopes do not have.
Chromatic aberration occurs because lenses (used in refractor telescopes) bend different wavelengths of light by different amounts. This means that not all colors of light will come into focus at the same point, resulting in an image that may have colored fringes or be blurry.
On the other hand, reflector telescopes use mirrors instead of lenses to gather and focus light. Since mirrors reflect all colors of light equally, they do not suffer from chromatic aberration.
The other issues mentioned - light loss from secondary elements, bad seeing, spherical aberration, and diffraction limited resolution - can affect both types of telescopes to varying degrees.
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