|filter <camera> [ filter_setup ]
|This script moves the filters for the specified camera.
The INGRID filter script moves INGRID's mechanism wheels in combination to setup certain 'astronometrically useful' mechanism configurations.
Typically, the script is used to select the wavelength for forthcoming observations eg for J, H or K bands.
Currently (10/11/00) the following configurations are
Internally the script builds on the services provided by UltraDAS for the fwheel1, fwheel2 and pstop commands.
Currently (10/11/00) INGRID has only been characterised
for conditions where mechanism movement takes place sequentially.
In order not to jeopardise the mechanical repeatability of the instrument
(particularly critical for the pupil stop) the decision has been taken
to execute individual wheel movements one at a time. At a later
date this limitation may be lifted, and the script may be recoded to allow
movement in parallel, resulting in a threefold increase in mechanism set
|filter_setup is an optional argument which,
if specified, selects the required wheel configuration eg J, H, K, K_s
etc. Issuing the command without this parameter displays a list of possible
|filter k_s - select K short mechanism configuration.