TUB RotationThe telescope utilization bin (TUB) at the bottom of the 3-m telescope can be rotated. Any instrument mounted at the Cassegrain focus will rotate with the TUB. This is useful for rotating the instrument to a desired position angle on the sky (e.g. aligning the slit of a spectrometer with the mean atmospheric dispersion). Due to mounting contraints of individual instruments, the TUB may not always be able to rotate. Currently the only instrument for which TUB rotation is allowed is the Kast Spectrograph.
Last modified: Thu Mar 4 12:32:21 PST 2010