Apart from generically providing a network, we also work together on specific projects. Based on break-out sessions at the Lorentz meeting in Nov 2018, these projects currently are:

• Understand the sources of thermal background quantitatively to a high accuracy in order to remove it. This includes a comparative study of chop-difference frames for the existing instrument/telescope combinations, their connection to the telescope design and the emission as seen in the pupil.
• Understand the timescales of thermal background variations quantitively in order to design the optimal removal strategy (e.g. chopping / nodding / drift-scanning). This includes variations from the detector, from the telescope and from the atmosphere.
• Explore the potential of Drift Scanning from previous and new observations in a range of facilities, with a view towards the next generation of telescopes.
• Derive requirements for the next generation of detectors (and instruments) based on unique science cases.