Observing system

A returning problem when observing with NOTCam is that occasionally observations are skipped. The precise cause is not known but is being investigated. In general it concerns only one in a series of many (short) exposures, and having one image less can easily be missed. In many cases this is an image in a dither pattern where losing an image can affect the final reduction significantly. In the case when a dither script is used it is actually known a priori how many images should be produced at the end, and the scripts will be changed such that in case less images then expected are created the user is warned that an image might have been lost. This will also include an automatic message to the staff so they know something happened without having to check the data themselves.