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liquid mirror telescope

(reflector telescope with primary mirror formed of spinning liquid)

A liquid mirror telescope is a reflector telescope whose primary mirror is formed of a rotating open container of liquid such as mercury, i.e., a liquid mirror. Under gravity, the upper surface forms into and upward-facing concave parabola, useful for a reflector telescope. However, the resulting mirror is in a fixed position, aimed straight up, though very slight aiming can be accomplished by moving the rest of the optics, with some expense to the quality of the image. An example liquid mirror telescope is the Large Zenith Telescope (LZT).

(telescope type,reflector,mirror)
Further reading:

Referenced by pages:
Large Zenith Telescope (LZT)
reflector telescope
segmented mirror