General Astronomy/Other Observations

Solar Telescope
Solar telescopes are used for studying the sun. They are quite large. The biggest is the McMath-Pierce Solar Telescope, with a diameter of 1.6 meters. It is housed in a structure that is 100 feet tall.

Cutting Edge
Some new telescopes use multiple or segmented mirrors (usually hexagonal).
 * New Technology Telescope (NTT)
 * Multiple Mirror Telescope (MMT)
 * Keck Telescope (segmented, hexagonal mirrors)