Autofib 2/WYFFOS Daily Duty Checks
This webpage contains the Duty Engineer checks that are performed daily
whilst AF2 is on the telescope. The commands that are to be typed
at the ICL command line are given after the ICL prompt.
Testing AUTOFIB
-
Waking the robot.
-
14:01:00 > afwake
-
This turns the AF2 power on. At ICL the Autofib mimic will update and all
the variables turn green. You should also hear the pneumatic gripper being
exercised. If this does not work it is probably either the system is accepting
local commands only or the VME needs booting in GHRIL. (See engineering
notes for detailed instruction.)
-
Turn on the WYFFOS back-illumination.
-
14:02:30 > afbackillum
on
-
This turns WYFFOS back-illumination. Backillumination sends light from
WYFFOS up the fibres to AF2. Also it turns on the TV back-illumination.
-
View a science fibre.
-
14:03:00 > afviewfibre
15
-
This moves the robot gripper camera to the co-ordinates for this particular
science fibre. On the Autofib monitor in the control room should be the
illuminated fibre. If you see no fibre check on WYFFOS mimic display that
backillum is on.
-
View a guide fibre.
-
14:05:30 > afviewfibre
32
-
>. As above but this checks that the backillumination is on to the guide
fibres. NB the illuminated fibre on the TV monitor looks smaller than a
science fibre, this is because a mask is in front of it.
-
Load the small fibre module.
-
14:06:30 > afloadm
-
This locates and re-affirms the fibre positions. NB This command turns
backillumination ON if it is not already on. This normally takes no more
than 10 minutes. No fibres are moved with this command. If it fails to
complete go to Autofib engineering notes.
-
Turn off the backillumination
-
Park the AF2 Robot
-
14:21:30> afparkr
-
This parks the robot to the edge of the fibre field but the power remains
on.
-
Move the off-axis mobile probe into the field.
-
14:25:00 > afmovp
150000
-
This moves the off-axis probe. NB the robot must be parked <afparkr>
to complete this operation.
-
Move the off-axis mobile probe back to the back position.
-
14:27:00 > afmovp
0
-
This moves the probe to its park position.
Testing the Westinghouse TV.
-
At TV panel ensure that the gain is off then turn on both Prime and Cass
systems. The cass system is turned on only to maintain sync.
-
Turn the AF2 robot inspection lights on.
-
14:30:00 > aflights
on
-
This turns the inspection lights on inside the Autofib robot. NB This would
damage the TV if the TV was already on and the gain was high.
-
Ensure all domes lights are off. If they are not then they have been overridden.
Remove override with key switch before proceeding.
-
Now the dome is dark and Autofib inspection lights are on. Turn on the
gain of the prime camera and increase until you see the guide fibres. They
are fibre bundles with a fibre in the middle.
-
Turn off camera system ensure the gain is fully down and off.
-
Turn the AF2 robot inspection lights off
-
Sleep the robot
-
14:34:30 >afsleep
-
This safely parks robot out of the field and turns the power off.
Testing WYFFOS
This is not a detailed check but proves communications. Moving other
things like the grating can disturb the observers set-up.
-
Check WYFFOS filter slide A
-
14:36:00 > wfilta in
-
14:38:00 > wfilta out
-
Check WYFFOS filter slide B
-
14:40:00 > wfiltb in
-
14:42:00 > wfiltb out
ADC Test.
-
Use the wyffos mimic to display corrector element positions.
-
14:44:00 > adc_auto disable
-
14:47:00 > adc 90
-
14:50:00 > adc -90
-
14:53:00 > adc auto_enable
WYFFOS Calibration Unit
This assumes that the WYFFOS calibration unit mimic is running.
-
Select a calibration lamp. the process of doing so will turn it on.
-
Select a filter.
-
Select 'broken' on the Nysmith control panel on the telescope engineering
desk.
-
Take an exposure with the ccd.
-
Check that the spectral lines are present on the ccd readout.
-
Select 'GHRIL' on the Nysmith control panel on the telescope engineering
desk.
-
Turn the calibration lamp off.
To Test WYFFOS CCD
This assumes DMS and sparc real time display is running.
-
Turn lights off in the dome.
-
Ensure Nasmyth Flat is stowed for GHRIL.
-
Setup WYFFOS and take a bias frame.
-
15:05:00 > setup wyffos
-
15:10:00 > bias wyffos
-
Check bias frame.
Autoguider
-
Reset the autoguider if required, see below for procedure.(not normally
done during a check)
-
Check to see if CCD is cooling or cold. If it's not type <start-up>
-
<tv on> check sensitivity to light. Toggle between fields with <fm
1> and <fm 2>. Do not use the <field> command, the system hangs if
there is no star.
-
When finished type <tv off>.
To reset the autoguider, if required:
-
The latest version of the AF2 autoguiding program is currently on a floppy
disk. Ensure that the AF2 version is in the autoguider disk drive.
-
Reset the Autoguider VME crate.
-
Quickly return to the Autoguider terminal Press <CTRL C> to abort task.
-
Type <insite reload>. This forces the system to boot from the floppy.
-
When prompted select <af2>
With the daily duty checks complete the last set of checks have to be done
by the astronomer, see section 8.