Red CCD Manual

The new red side CCD was installed and commisioned in April, 2021. For now we don't yet have new GUIs to control the new CCD, e.g. set binning, set exposure time, trigger expsures, etc. This is a manual for how to control the red CCD via command lines. We will update this page when the new GUIs are available.

Set binning

Set up desired binning by
  1. Select from background menu Login Windows --> xterm at LRISserver or VNC Host or monored.
  2. An xterm will appear, then execute the lredccd_setup script. The script will set up the ccd based on desired binning and observing mode.
  • Executing lredccd_setup without arguments will give you the current CCD settings.
  • The script will set number of amplifiers for readout based on the observing mode. For the imaging mode, it will use 4 amplifiers. For the spectroscopy mode, it will use 2 amplifiers.
  • Available binning modes for imaging are 1x1, 2x2.
  • Available binning modes for spectroscopy are 1x1, 2x2, 2x1, 1x2
  • Set exposure time

    In an xterm (LRISserver or VNC host or monored), execute the tintr script. The script will set the desired exposure time.
  • Executing tintr without arguments will give you the current exposure time.
  • You may change the exposure time on the fly by reissuing tintr, e.g. tintr 90, to update exposure time to 90 seconds.
  • Trigger exposures

    In an xterm (LRISserver or VNC host or monored), execute the goir script. The script will trigger the desired number of exposures.
  • Executing goir without arguments will take one exposure.
  • Abort exposures

    In an xterm (LRISserver or VNC host or monored), execute the abortr script. The script will abort the current exposure; it will not read out and save the data.

    Windowing

    Currently windowing is not available for the red CCD.