Up: Data Taking Commands - CCD Detectors
Previous Page: CONTINUE
Next Page: DIR
Takes an exposure without opening the CCD shutter, and transfers the data plus headers to an HDS file on the system computer.
Format: DARK <channel> <time> [``<string>'']
Channel: The name of the CCD data acquisition channel to be used.
Time: The exposure time in seconds
Title: A title for the observation (optional)
Examples : DARK RED 9999 "Measuring dark counts"
Comments: As for the RUN command, except that the CCD shutter is not opened, and the observation type is set in the headers as being a DARK exposure.