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PyMovie A Stellar-Occultation Aperture-Photometry Program
JOA 2019, Vol. 9, No. 4, Page 9 Author(s): Bob AndersonAbstract: PyMovie is a multi-operating system (Windows/Mac/Linux) program for extracting light curves from stellar occultation videos. It is an alternative program to Limovie and Tangra that uses the idea of creating a shape fitting measurement mask from the star image itself in order to minimize the inclusion of background pixels. This has the effect of improving the signal to noise ratio of light curves, even when the images are distorted by shaking during the recording. The technique also makes it easier to keep measurement apertures properly positioned throughout the recording. The program also provides a set of tools to assist in the placement of measurement aperture on very hard-to-see target stars.