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Guiding Options

Two guiding options are available, the F2 On-Instrument Wavefront Sensor (OIWFS) and the telescope's Peripheral Wavefront Sensors (PWFSs). The F2 OIWFS is currently available for use, but its use is restricted to those observations that do not have a suitable PWFS2 guide star. 


  • F2 OIWFS
  • Using F2 with the PWFS