Troubleshooting guide

Walking up the slit:
• Move the star up the slit in steps of 10" for a total of 5-7 positions. The MOS mask slits are 120" long, so
one can easily stay within the slit.
• Use singleimage.pl to take an image at every location.
• Use guide.mos.offset.kpno.pl to move the star up and down the slit (while continuing to guide).
Setup to execute a dithered ABBA script:
1. Set up lock position definition for the current guide position. This requires you run a script on
flamingos1a which prompt you through a sequence of steps with the Linux Guider GUI on teal.
• Login to flamingos1a from teal. Open a terminal, and use ssh to login as 2mguest (cf. § II−Starting
FLAMINGOS). Keep this window open when finished with these steps.
• Define the current lock position. Type the following at the 2mguest prompt:
2mguest@flmn-2m-1a{1} guide.define.slit.center.manual.kp2m.pl
You should see the following output (some extraneous debugging info is excluded):
This script will walk you through the guider gui on Teal, in order to define guide lock postion 1 at the current
guiding position.
The MOS plate alignment stars should be well placed in their boxes, and the MOS objects in the center of
their slits.
You should be guiding.
Are you ready? (y/n)
When ready, type "y", and follow the instructions for interacting with the Linux TV Guider GUI. Here
are the instructions it will give:
On the guider gui on Teal:
select 'Locks --> Clear lock positions'
Done?(y/n)y
On the guider gui on Teal:
select 'Locks --> Define lock position 1'
Done?(y/n)y
May not need this step:
On the guider gui on Teal:
select 'Locks --> Goto lock position 1'
Done?(y/n)y
On the guider gui on Teal:
select 'Markers --> Add marker at current box center'
Done?(y/n)y
This script next needs to query the guider for the current lock position. This is necessary if we
ever decide that nudging the MOS observation is possible on repeats of the MOS ABBA pattern.
Are you ready? (y/n) y
FLAMINGOS@2.1-m, Ver. 2.39, 2011 May 13 Page 28 of 46