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DSSI OT Details

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This page explains how to configure the Gemini "Visitor Instrument" component for use with DSSI.


The Visitor Instrument name should be set to "DSSI".

Exposure Time

The "Exp Time" field should be filled in with the total desired integration time for each target.

Position Angle

The "Pos Angle" field sets the position angle of the instrument on the sky (degrees East of North). It is not expected that this field will be used with DSSI.


The "Wavelength" field is used by the TCS to calculate the relative atmospheric dispersion with respect to the guide wavelength, and should be set to 0.7 microns for all DSSI observations.

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