What specialized observation technique is the LBT capable of due to its dual-mirror setup?

Answer

Interferometry with a baseline of 22.8 meters.

The LBT's configuration allows it to perform interferometry by utilizing the two physically separate 8.4m mirrors on a common mount, creating a baseline of 22.8 meters, which effectively functions like a single, much larger virtual mirror.

What specialized observation technique is the LBT capable of due to its dual-mirror setup?
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