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I work in the field of infrared interferometry, specifically instrumentation.

As such, I need to be aware of the science goals of such an instrument. Is there a quick list of important and contemporary targets that such an instrument of high angular resolution would be pointed at?

(By "high", I mean objects that subtend a small angle on the sky.)

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The most obvious targets are protostar disks (T Tauri, Serpens FIRS 1), the Milky Way's central black hole Sgr A*, and nearby large stars (Betelgeuse).

The MPIfR interferometry group web page has an impressive sample

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