Telescope & Instrument Setup:
The Instrument and Telescope Configuration Must be defined before slits are placed. When the central pointing or rotation are adjusted all slits generated will be deleted. Wavelength calculations are based only on the initial configuration and will not correctly updated if changes are made once slits are placed.
The central pointing and rotation and be adjusted with the green dot at the center of the mask outline. Click and drag the green dod to adjust the pointing, Central click on the green dot to change the Position Angle (default 5 degrees per click). The adjustments you make will be reflected in two areas as you go.
To adjust the rotation step size for each click, select the appropriate step size from the “Rotation Step >” submenu of the “Inst/Tel Config” menu.
When setting you central pointing and rotation, keep in mind the future steps: Are there suitable Guide stars, or would a flip of 180 degress provide more options. If planning on ESM or Argos operations, are there suitable AO ref stars in the central 2×2 arcmin (with an additional arcmin east). Keep issues like spectral clipping and reference boxes in the back of you mind.
Configure the Instrument. In the same”Inst/Tel Config” submenu configure the Camera, Filter, then Grating. There are allowed Filter-Grating combinations. Configuring the filter first will ensure that your grating selections are only allowable ones. Note that GRAT3 is a generic name that indicates either the G150 for LUCI1 or G040 for LUCI2.
Move Pointing is a new addition that allows the user to freeze the current pointing and rotation, removing the green fiducial from the center of the mask during the remaining development steps. Toggle this off when you are happy with your set up to avoid accidental movements and to more easily allow slit placement/adjustment at the center of the mask. Shifts in the mask position will delete existing placed slits!
Set Project Name and Save
Once the telescope and Instrument are configured set the Project Name and Save! The project name is necessary for ingestion by the OT so its best to set this early. It can be changed at any point in the mask development. Select “Project Name” from the LUCIFER menu and a popup will appear where you can enter a name. Only the first 8 characters entered will be recognized.
Select “Save Luci” from the LUCIFER menu. This will go through a check for project name, guide stars, reference stars, and verification of slits. It is ok to have interim masks that fail these final criteria, but your final product submitted to LBT for cutting must pass these checks.
“Save Luci” saves an lms file (used for loading should you want to stop and pick this up later), gerber file (for mask cutting, which is more or less blank at this point), and an epsf for later viewing in the directory <HOME>/.lms/SET/ . A selected catalog will appear in the lms header.
ProTip: Open up a Status Panel to see the current configuration, as well as an overview of the last action. This is the last menu item in the LUCIFER menu and opens the following: