The ability of a telescope to distinguish fine detail, or to see celestial objects that are close to each other as separate images, is called resolution.

望远镜辨认出精细结构或者把彼此靠得很近的几个天体分开成象的能力叫做分辨本领。

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No existing telescope is fine enough.

ECONOMIST: Pulsars

Switchback after switchback finally leads to the telescope itself, where Annis, a Fermilab astrophysicist and colleagues, have been fine-tuning the attached digital camera that offers the next best hope in answering questions about the true nature of dark energy responsible for the inexplicable accelerating expansion of the observable universe.

FORBES: Dark Energy Camera Could Reshape Einstein Cosmology