CFHT
, Instruments
, Spectroscopy
, GriF
,Manual.
GriF Fabry-Perot set-up procedures
Day time set up
The following steps must be performed before installing the FP in the GriF
spacer:
- remove the Gumball densities
- check that the proper resistance
has been connected in the CS 100
- adjust the potentiometers of the CS 100 front panel to the appropriate
values
- close the loop on the CS 1000
- adjust by eye the parallelism of the FP
Once the FP has been placed in the GriF spacer, the following
actions can take place:
- adjust the default values
of the FP parallelism
- focus the different KIR filters and GriF grism(s?)
Daytime checkout
Setting up the observing session and opening all the necessary
windows:
From the grif maka session,
- physically move the Fabry-Perot into the beam.
- open a first Xterm window (called "GriF Xterm" later on),
type “grifin” and then “bash”
- open a second Xterm (called "IDL Xterm" in the following),
on which you log on kou (with the observer login/passwd); copy
/h/grif/idl/idl_setup to the home directory of the observer account;
execute "source idl_setup"; change to directory "/h/grif"; and
run idl
- open a third Xterm (called "Phase Xterm" in the following) and type
“bash”
Then, perform the following two procedures:
During observing
The FP is now ready for astronomical observations, which consist
of the following operations:
- First a wavelength calibration
- type in the GriF Xterm " grifsetup clean" and "grifsetup object" before
doing the scan of the object (astronomical object, PSF, calibration star)
- and finally a flat field
(white light cube)
The following page
contains the different commands/files used with GriF
