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Description
Caustics main strength is galaxy-galaxy strong gravitational lensing, it would be interesting to explore what optimizations would be well suited for microlensing (either AGN microlensing or stellar microlensing). There may be different approximations, or different utility functions that are better suited for microlensing, for example we now have a star light class which is mainly suited for microlensing applications. This may be best represented as new functions in the existing lens class, or could represent new models.