Summary
Motor Moves
For mask design questions and discussions as well as a list
of dither patterns used for spectroscopic
observations see dither
patterns .
It is. When calibrating any longslit, the system does reconfigure
all of the bars even if the longslit is only a few segments long.
This is to ensure that the other slits are closed up. For
example, if the CSU was in the “open” (imaging)
position prior to the longslit move, then only a few slits would
be closed down and the resulting spectra would probably be
ruined. Instead, we have MOSFIRE close down all of the slits to
the desired width.