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…eaders during linear correction
Add OSIRIS imager distortion solution.
…or saturation levels DN vs DN/coadd
…iming and accuracy.
…ed images. All tests in test_data.py pass.
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This is a significant update which primarily removes the dependency on IRAF. The functionality and methods of analysis are unchanged and the measured astrometric and photometric precisions are unchanged. However, we do not currently recommend combining datasets reduced with IRAF and no IRAF pipelines for high precision astrometry. The produced reference frames are different on the ~0.0002 +/- 0.0003 mas level in position and ~0.0001 +/- 0.0001 mas/year level in proper motion.
Additionally, there have been new nonlinearity solutions and distortion corrections added. The distortion solutions for OSIRIS now include corrections from the PCU.
Previously sets of images that were rotated with respect to one another would not be correctly handled. This update also address this so that they can be shifted, rotated, and stacked to form a correct combined image.
There are also small updates and bug fixes.