Pauses a CCD exposure.
2=to: 2!:}Format: PAUSE <channel>
2=to: 2!:}Channel: The name of the CCD data acquisition channel to be used.
2=to: 2!:}Examples : PAUSE AUX
2=to: 2!:}Comments: This command suspends the current CCD exposure, closing the CCD shutter. The command will be aborted if no exposure is in progress.