What Is So Unique About the Mirrors of Telescopes Such

question 9

Multiple Choice

What is so unique about the mirrors of telescopes such as the Keck Observatory, Gran Telescopio Canaries and the soon-to-be-built Giant Magellan Telescope?

• A) The mirrors are made of a newly designed metallic material.
• B) The mirrors can fold up went not in use.
• C) The mirrors are inexpensive.
• D) The mirrors are segmented.
• E) The mirrors are thin.

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Definitions:

LMC

Least Material Condition; a condition of a feature which contains the minimum amount of material yet still meets the specified limits of size.

Freedom of Assembly

The ease with which parts can be put together, denoting flexibility in assembly operations.

Symbol

A graphical representation used to convey information or specifications.

Maximum Straightness Tolerance

The highest allowable deviation from a perfectly straight line that a component or feature can have.