Grism-based Spectrograph Modeling

NEW REPO: https://gitlab.in2p3.fr/ycopin/spectrogrism

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This module implements an ad-hoc grism-based spectrograph optical model. It provides a flexible chromatic mapping between the input focal plane and the output detector plane, based on an effective simplified ray-tracing model of the key optical elements defining the spectrograph (collimator, prism, grating, camera), described by a restricted number of physically-motivated distortion parameters.

• Code repository <https://github.com/ycopin/spectrogrism>_
• Documentation <http://spectrogrism.readthedocs.org/en/latest/>_