Add HBA self calibration
This MR adds the following functionality:
- HBA self-calibration can be enabled through
selfcal
totrue
andselfcal_strategy
to'HBA'
. - When self-calibration is turned on, both HBA target solves are changed from 2 MHz chunks to a full-bandwidth solve with a smoothness constraint by default if
num_SB_per_group
is not set. This removes discreteness in the solutions and limits the amount of irreparable damage a mismatched skymodel from e.g. TGSS can do. - When self-calibration is turned on, one iteration of selfcal as raised in #39 (closed) is done. An image of the input data is made at full resolution (6'') after which a solve against the resulting model is done.
It also:
- adds proper support for
scalarphase
calibration at some parsing stages. - exposes additional DP3 and WSClean parameters in their respective steps.
- updates the solve against TGSS to use DDECal instead of gaincal.
- updates the inner uv cut in the TGSS solve to 200 lambda, matching the inner cut used for TGSS ADR1.
Edited by Frits Sweijen
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