Add desimeter to platemaker transform

julienguy commented 3 years ago

Add a transform class from desimeter to platemaker focal plane coordinates (desimeter.transform.dm2pm). The transform is one again based on Zhao Burge polynomials.
Add data file with best fit transform based on a stack of the PM and DM fiberassign coordinates from 20210512
Use this in the fiberassign transformation functions by default.

Example (based on an exposure not used for the fit):

plot_pm_coords -i /global/homes/j/jguy/data/20210511/00088057/coordinates-00088057.fits

RMS residuals of 8 microns. Max deviation: 20 microns, for an exposure at an elevation of 57deg.

88057

julienguy commented 3 years ago

I am adding a unit test and then will merge.

coveralls commented 3 years ago

Coverage increased (+0.2%) to 73.349% when pulling 99458ef41ab07afb957e772405ab5dcab459d6f9 on dm2pm into ea5236a484518b156a8d9a0b7f2fc63ef62c0d35 on master.

desihub / desimeter

Add desimeter to platemaker transform #184