CFHT, Instruments, Spectroscopy, Gecko: The Coudé f/4 Spectrograph

Gecko: Focus of the 2 cameras


The first step of the LLLTV Focus procedure can be done during the day. The rest of it needs a star, and should be done as soon as possible after sunset, with a magnitude 4-5 star.

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http://www.cfht.hawaii.edu/Instruments/Spectroscopy/Gecko/CamerasFocus.html
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