| STATUS | reports position of mask and shutter | ||
| MASKO | opens mask, reporting if fails | ||
| MASKC | closes mask, reporting if fails | ||
| SHUTO | opens shutter, reporting if fails | ||
| SHUTC | closes shutter, reporting if fails | ||
| EXPOSE | T | exposes for T seconds | |
| procedure opens shutter and mask, reporting if fails, and commences timing; at T seconds procedure will close shutter, reporting if fails; exposure time (which is approximate due to the slow shutter) may be modified during integration | |||
| CALIB | opens shutter and closes mask, reporting if fails | ||
| FOCUS | T | performs a focus run on a star or PN | |
| procedure opens the shutter five times for T seconds on a single CCD frame; instructions are given on moving the telescope and focus to create a sequence; last one in the sequence has longer exposure and larger step |
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Last updated 19-07-2001
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