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YAN-1351 Mock pointings from HDF

Callan Gray requested to merge yan-1351-hdf5 into main

Using data from https://confluence.skatelescope.org/display/SE/Simulations+--+PI+19+Version+1 the mock device now simulates a pointings stream with a configurable timescale.

Pointings are in the DOUBLE[3] tango format where values at indexes are:

  • 0: seconds from MJD epoch
  • 1: az in degrees (from the pointingcentre_coords and pointingcentre_frame)
  • 2: el in degrees (from the pointingcentre_coords and pointingcentre_frame)

Seconds from MJD epoch at ns accuracy requires the use of double precision and is accurate until 2150 (+/- 292 years) according to https://numpy.org/doc/stable/reference/arrays.datetime.html#datetime-units

Edited by Callan Gray

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