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Old 13-07-2017, 07:05 PM
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Peter Ward
Galaxy hitchhiking guide

Peter Ward is offline
 
Join Date: Dec 2007
Location: The Shire
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Aperture synthesis has been alive and well at optical wavelengths for many years....e.g. Mount Wilson in 1920

Sydney University's Stellar interferometer also comes to mind (I wrote about the opening of this facility for Sky & Space magazine, many, many moons ago)

....so yes, you can combine the light from two smaller apertures separated by a baseline and get superb optical resolution. But you need to be able to look at wavefront changes in real-time, and adjust them accordingly.

Plonking a bunch of telescopes/lenses together (eg dragonfly) and summing the images will only increase the signal gathered over time....unfortunately this does zippo for the system's resolution....but does help in gathering few and far between photons.
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