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
supported:
|
Setup
|
Pupil Stop
|
Filter Wheel 1
|
Filter Wheel 2
|
| blank |
blank1 |
blank2 |
blank4 |
| z |
cs |
z |
clear |
| j |
cs |
j |
clear |
| h |
cs |
h |
clear |
| k_s |
cl |
k_s |
clear |
| k |
cl |
k |
clear |
| fe2 |
cs |
h |
fe2 |
| brg |
cl |
clear |
brg |
| kcont |
cl |
clear |
kcont |
| hcont |
cs |
h |
hcont |
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
up times.
|
