ENH: Compass N-E to be more robust #1102
Merged
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Compass N-E to be more robust by using small angular offsets when determining compass properties.
This is from spacetelescope/jdaviz#2867 by @astrofrog on the same piece of algorithm we borrowed from Ginga (https://github.com/spacetelescope/jdaviz/blob/main/licenses/GINGA_LICENSE.txt).