Large binocular telescope

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Offline Atomic-S

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Large binocular telescope
« on: 07/08/2007 06:46:56 »
Regarding the Large Binocular Telescope on Mount Graham:

How can they create high resolution images with only 2 mirrors? I would have thought that a minimum of three would be required, arranged in a triangle. It appears from info re the LBT that interferometric images can be created using 2 mirrors if the mirrors can be repositioned; however it does not seem to me from what I was able to discern about the LBT that its mirrors can be rotated about the axis of observation, which I assume would be necessary.


Offline syhprum

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Large binocular telescope
« Reply #1 on: 07/08/2007 07:17:30 »
I believe that the rotation of the Earth provides the necessary movement in much the same way that the orbiting of the satellite provides the movement for a synthetic aperture radar