Register images to az/el using the astrometry.net program
Gridding for auroral and ionospheric modeling
Utilities for reading HiST data, etc.
Model of Earth atmosphere absorption and transmission vs. wavelength and location on Earth.
Computer Vision utilities, Cohen-Sutherland line clipping, OpenCV plot helpers for Optical Flow and Blob Analysis, AVI codec helpers
Python coordinate conversions, following convention of several popular Matlab routines.
Date conversions used in the sciences.