Several of the Scientific Instruments must be protected against over-illumination. Table 3.13 summarizes the safety restrictions by instrument. You should not propose observations which violate these guidelines. Non-linearity, saturation, or other temporary effects which may occur at substantially fainter limits than those identified below are described in the Instrument Handbooks
.
The Visual Target Tuner
(VTT), a tool available to the user in APT, has a Bright Object tool that can be used to check on these constraints.
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