* Add `rate-sidereal` track mode. This mode takes n - 1 rate track frames and the last frame in sidereal tracking mode.
0.19.1
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* Add `TRKMODE` to fits header.
0.19.0
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* Add lambertian sphere brightness model for objects. Set object key `model` `mode` to `lambertian_sphere` and set `albedo` and `size` (meters) parameters. For 2D simulations, `distance` (km) and `phase_angle` (degrees) parameters must also be specified.
0.18.0
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* Add turbulent atmosphere to POPPY PSF generation. Set with psf option `turbulent_atmosphere` and sim option `psf_sample_frequency`. * Add star and object segmentation annotation. Set sim option `save_segmentation` to `true` and `star_annotation_threshold` to limit stars annotated.
0.17.1
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* Copy useful TensorFlow Addon (TFA) functions into `tfa` as the TFA project is no longer maintained. * Copy tests.