Make sure HCI waffle is optional
From communication with Pierre Baudoz:
Note that some observations will not be done with the waffles (disks observations for example where waffles could be annoying to see the extended structure of the disk). In this case, we can use a mode where we record a waffle image at the beginning and at the end of the observation. Assuming that the drift is linear, you can remove part of it. It is one of the main mode on SPHERE (also because SPHERE is very stable and does not need recalibration when looking at the same star during one hour).
A few comments on your google drive doc.
In pipeline 2, the recentering could be done on the vAPP image itself. There are 3 images on the detectors that can be used (see the analysis document for an example of vAPP images). Else it could be done by recording one waffle at the beginning and at the end of the observation.
We need to ensure this is indeed possible