QUBIC

Minutes:

• programme of QUBIC (Steve):
  - today, refill the coolant of the generator (after power failure of this weekend 20/04/2025, leak already fixed)
  - to do list: http://qubic.in2p3.fr/wiki/pmwiki.php/Operation/TODO
  - starting data acquisition: http://qubic.in2p3.fr/wiki/pmwiki.php/TD/Starting
  - Michel is on every morning for about one hour (5 to 6 or 7 pm for us)

• homogeneous definition of the shape of H (Alexandre)

• creation of the preconditioner (Leonora):
  - problem in the coverage, it is good with QUBIC only but becomes constant when using QUBIC and Planck combination

• creation of the calfiles (Jean-Christophe):
  - either use files with synthbeam info (Maynooth optical sim) or use the theoretical "ideal" values
  - currently editing the code so that if no calfile given, the synthbeam is computed with theoretical "ideal" values

• scanning strategy (Sofia):
  - use astroplan, an open source library to plan observations in Python (compatible astropy)
  - have a top-down approach, with targets to observe, targets to avoid, observation constraints...

• scanning strategy (Ismail):
  - modellisation of a quite realistic scanning strategy now working (realistic trajectory, speed, acceleration)
  -> it would be interesting to produce the orders the mount is supposed to receive (list of points you want to go to)