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Background Slow Shutter, MS257
The 77755 Background Slow Shutter is a solenoid driven shutter which can be closed for dark scans and dark current measurements. You can also automatically close the shutter during grating, filter, and optical port changes to protect the detector from exposure to abnormally high intensity levels. When using MS257 as an Imaging Spectrograph, trigger the 77755 Shutter to open in order to expose the CCD detector. The 77755 is controlled through the MS257 command language, the 77709 Hand Controller, directly via an externally applied TTL signal, or through the optional TRACQ™ Basic software.