DEIMOS Slitmask Imaging Coarse Align Checklist (SAT)

Synopsis

This checklist describes the procedure for aligning multi-object slitmasks on DEIMOS using the Slitmask Alignment Tool (SAT), in the Imaging Coarse Align mode. This SAT mode will be typically used only in the case the Fine Alignment procedure does not converge.
  • Preliminaries
    1. Launch SAT
    2. Focus telescope
    3. Configure DEIMOS
  • Imaging Coarse Alignment
    1. Select Imaging Coarse Align tab
    2. Select the desired mask name under Mask
    3. Click on Acquire.
    4. Select fiducial star.
    5. Check the matching.

Preliminaries

  1. Launch SAT.
    • Navigate to an “analysis” VNC desktop (blue background)
    • From the window manager pull-down menu select
      	DEIMOS Utilities -> Slitmask Alignment Tool
    • Click Load Star List, locate the appropriate directory, and select the appropriate starlist file.
  2. Focus telescope.
    • In the MAGIQ UI, middle click on your next target.
    • Ask to OA to run Mira in the neighborhood of your target. If you'll be on the field for several hours, then have the OA focus 1-2 hours west of the field.
    • Wait about 10 minutes for the OA to acquire an appropriate star and run Mira.
  3. Configure DEIMOS.
    • Insert desired slitmask. You can do this while the telescope slews.
    • Send grating to zeroth-order position by clicking the GO ZERO button on the DEIMOS Dashboard GUI's grating subpanel.

Imaging Coarse Align

  1. Select Imaging Coarse Align tab. Click the Imaging Coarse Align tab on the SAT.
  2. Select mask. Click on the drop-down menu next to Mask: (bottom-left side of the SAT window).
  3. Acquire. Click on the Acquire button. This will
    • Take an image of the field with the selected mask.
    • Take an image of the field without the selected mask.
    • Show both images in the display region.
  4. Select fiducial star. Click on any star in the displayed field, wich you can identify as one of the fiducial stars. The system will automatically move the telescope to match the star position to the nearest box.
  5. Check the matching If the selected star is correctly moved to the nearest box, go back to the Fine Alignment procedure, otherwise go back to step 3.
Last modified: 10/15/2017 20:47
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