The basic idea for a liquid mirror telescope is to use a thin layer of mercury, then spin it slowly. The rotation of the frame causes the liquid to form a parabolic surface. Combined with ...

ESO's Extremely Large Telescope (ELT ... mirror will comprise 798 small mirrors, each equipped with three pistons and 12 edge sensors to maintain its perfect parabolic shape -- collectively ...

Also called a "dish" or "mirror," parabolic antennas are used for satellite signals and planetary telescopes. The reflective mirror design can also emit energy such as in a flashlight or ...

For a visible light telescope at a wavelength of 400 nanometers, this means a parabolic mirror needs to have a surface finish that is perfect to within 40 nanometers. That’s the size of viruses ...

To ensure stability and high stiffness, each of the parabolic shaped segments is supported ... three leaf springs which are connected to the fixed telescope structure. The moving frame isolates the ...