The software controlling the data buffers for CSHELL has been modified, in response to requests by several observers. The current (06/2000) arrangement of buffers in this version of the CSHELL software (v2.60) is the following:

• The Object frame is displayed in B0 (on vf).
• The Sky frame is displayed in B1.
• The SubAB (A - B) frame is put into B2.
• If both SubAB and CalcMean buttons are checked then in each cycle:
  • The sum of (A-B) is accumulated in B7.
  • The mean of (A-B) is put into B3.
• If the CalcMean button only is checked then:
  • The sum of the A frames is accumulated in B7.
  • The mean of the A frames is put into B3.

The only options are to be able to turn off/on the SubAB and CalcMean functions. The default is ON for both.

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John Rayner (rayner@irtf)
Last modified 06 June 2000