Stellar Interferometer part 2

A stellar interferometer is built similar to Michaelson design in year 1919 that was placed in front of the 100 inch telescope at mount Wilson. Henrietta Leavitt had discovered how to find the distance of stars by parallax angle in 1912. Part 2 of this video completes and tests the assembly using the Optoform system. Although the 1 m baseline of this interferometer may not be sufficient to measure the diameter of stars, it is sufficient for planetary work. Michaelson utilized the same technique to measure the diameter of Jupiter's moons in 1890. For smaller stars, a much longer baseline is needed such as the Mark III long baseline (12 m) interferometer at Palomar that is designed, and run by JPL. The large Binocular Telescope (LBT) is also suitable for stellar interferometry with its 22.8 m combined aperture (two 8.4 m mirrors).

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Keyword : experiment with mirrors on mt wilson