ACO Trainings
ALMA DATA REDUCTION TRAINING
22-24 January 2020
Led by : Ana LOPEZ-SEPULCRE, Mathilde BOUVIER
Place : IRAM, Grenoble, France
Capacity : 5 students
Duration : 3 days
Estimated time schedule : 9 AM - 5 PM (including 1h lunch break) every day
Program :
The students will work on the following topics, using a data set from ALMA cycle 4:
In CASA:
- Data calibration (brief): weblog inspection (based on Ana’s tutorial)
- Extract a single spectral window, and possibly resample it
- Export visibility data (.MS) to GILDAS (.uvt)
- Time permitting only: continuum imaging with TCLEAN
In GILDAS:
- Continuum imaging: support, natural versus uniform weighting
- Continuum subtraction on data cubes
- Line cleaning: support
Since time is short, the students should be familiar with the basic concepts of interferometric data calibration: bandpass, flux, phase calibration.