calc_deltas

romancal.orientation.pointing_summary.calc_deltas(exposures, extra_meta=None)[source]

Create table of pointing deltas.

Parameters:

  • exposures ([file-like[,...]] or [DataModel[,...]]) – List of file-like objects or roman_datamodel.datamodels.RomanDataModel to retrieve pointing information from.

  • extra_meta ([str[,...]] or None) – List of model meta attributes to add to the table.

Returns:

deltas – Table of results with the following columns:

  • exposure: The exposure the pointing information is from.

  • target: SkyCoord of the proposed target.

  • v1: SkyCoord of v1.

  • refpoint: SkyCoord of the reference point.

  • delta_v1: target - V1 separation.

  • delta_refpoint: target - refpoint separation.

Return type:

astropy.table.Table