AF2 and WYFFOS
Daily Duty Checks
Any errors or suggestions please email to
Rene J. Pit
The following commands that are to be typed at the
AF2 window running on Taurus.
Before doing checks, make sure the af2 server is
running on AF2pc1. >
af2 ping If no response reboot the PC
which is in the electronics room in Ghril
Testing the AG heads used for acquisition and guiding
- Waking the robot.
- Sys > af2 wake
- This turns the AF2 power on. At WHTICS (on taurus) the
Autofib mimic will update and all the variables turn green. You should
also hear the pneumatic gripper being exercised.
- Turn on the WYFFOS back-illumination.
- Sys > af2 backillum
- This turns WYFFOS back-illumination. Back illumination
sends light from WYFFOS up the fibres to AF2. Also it turns on the
guide fibre back-illumination.
- View a science fibre.
- Sys > af2 viewfibre
- This moves the robot gripper camera to the co-ordinates
for this particular science fibre. On the Autofib monitor in the
control room the illuminated fibre should be visible. If you see no
fibre, check on WYFFOS mimic display that backillum is on.
- View a guide fibre.
- Sys > af2 viewfibre
- As above but this checks that the back illumination is
on to the guide fibres. NB the illuminated fibre on the TV monitor
looks bigger than a science fibre, this is because they are 500
microns instead of the 90 microns for the science fibres
- Load the small fibre module.
- Sys > af2 loadmodule
- 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 2 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
- Sys > af2 park
- This parks the robot to the edge of the fibre field but
- Turn off all dome lights
- Turn the Wyffos calibration lamps on.
> wcallamp 2 (or
click on the wyffos GUI on the Neon lamp)
- This turns on a neon lamp in the calibration unit
- Take an 1 sec exposure with AG1 (autoguider)
You should see the ten fiducial bundles now
- To test AG2 we need some light on the
mobile probe. This probe is the small white circle on the grey square
that represents the gripper body (on AF2 mimic). Now make sure the
mobile probe is in the field
- Take a 1 second exposure with AG2
The mobile probe should be illuminated now
Testing WYFFOS Spectrograph and
- Sleep the robot
- This safely parks robot out of the field and turns the
This is not a detailed check but proves communications. Moving
other things like the grating can disturb the observers set-up.
Testing the ADC.
- Make sure the Nitrogen flush for the CCD window is switched
on (especially in winter with humid conditions). On the black mimic
check if the LN2 is on. If not tick the button on the Instrument
Control Console for LN2 flow.
- Switch neon lamp on
> wcallamp 2
(if blue or high dispersion grating is used then:
wcallamp 4, helium)
- Take an exposure with wyffos on taurus
>window wyffos 1
(this is to make sure that both
chips of the WHTWFC are displayed in one frame)
- Sys >rspeed wyffos slow
- Sys >run
- Display in DS9 and analyse with Iraf to see whether
there are arclines visible
- Switch calibration lamps off
- Take a bias frame with wyffos on taurus
- Display in DS9 and analyse image and check the noise
- Use the wyffos mimic to display corrector element
positions. This assures that both prisms are moving.
> pfip_set -m adc disable
> pfip_move -m ado 45 (this
moves the outer element)
>pfip_move -m adi 45 (this
moves the inner element)
> pfip_set -m adc enable
Another way of doing this test, is using the Instrument
Control Console and ticking the corresponding buttons.
Last updated 27 October 2009 by RJP