This is a major project aimed at supporting the Spectrographs in use by Katherine Blundell at Oxford University (at least at the beginning) and maybe others as time goes on. The hope is that it can all be done within the observing logic script, but... this Gemini ticket is also for containing any changes needed to the main ACP components, the need for which may arise during the project.
Unfortunately the discourse is happening via email so it is no available here and may be lost with email cleanups. I have marked this as private for now.
This has changed into just the AcquireImage() user action and is now publicly visible.