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Observation nights (1)

Telescope (3)

Telescope at night
As the telescope is guiding to the motion of the stars some work is to be done by the operator. As clouds mark the end of the observing session the telescope is disassembled.
A Telescope is pointed to the sky
The stars are moving over the sky. The telescope is pointed to the Big Dipper.
Telescope at night
The stars rise and set. The sky is moving. Also the telescope has to move if an object in the sky is photographed for several hours.