Tomo: partly a comment, partly a question
pre-flight: sub and full level tests; outputs: performance verification and mirror shapes
inflight: beam calibration; slide shows beam profile from Planck
post-flight: if with precise beam, with pre-flight information, systematics; if beam not precise, we need GRASP model, and correct for it.
What did Planck use to get beam? What are the key information?
Kris: LFI used Grasp model; HFI used planet measurements; signal-to-noise is the reason. LFI is much more noisy. Absolute size of beam matters. pre-flight + inflight consideration.
Beam size is important because couple to focal plane; in part of scanning. Sometimes more reliable on GRASP model.
Tomo: future mission should have tighter requirement for signal-to-noise; does this mean they will be like LFI case?
Kris: Any test before flight is valuable.
Shaul: not clear what Planck did was used and useful in terms of tests.
Kris: not sure if there is a short path compared to Planck.