The resolving power of an astronomical telescope is 0.2 seconds. If the central half portion of the objective lens is covered
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The resolving power of an astronomical telescope is 0.2 seconds. If the central half portion of the objective lens is covered, the resolving power will be The resolving power of an astronomical telescope is 0.2 seconds. If the central half portion of the objective lens is covered the resolving power will be November 15, 2020 [...]