jktebop backend: exposure time support #728
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* Fixed two bugs with JKTEBOP backend RVs. 1. To calculate RV semi-amplitude (K), system semi-major-axis was used previously instead of component sma (sma vs. center of mass). Before, any change in the mass ratio had no effect on the modelled rvs. 2. Small left-over discrepancy corrected, as RV amplitude K did not take eccentricity into account. Now includes term 1/(sqrt(1-ecc^2)). * added jktebop nosetest --------- Co-authored-by: Michael Abdul-Masih <[email protected]>
* fix minor syntax warning * update gitignore to avoid build files
…ameters fti_method, fti_oversample, and exptime. The implementation uses twigs since b.get_value() would fail in odd ways: - Either fails because returns a parameter set with both PHOEBE and JKTEBOP parameters - Or fails because jktebop parameters are not found if "compute" or "kind" is specified For some reason, when compute is instead specified using twigs, it works without any issue. Uses a try except statement to check if fti_oversample and exptime exists, instead of an if statement. Should probably be improved. Checked that in this implementation, fti_oversample accurately does not exist for RV curves, meaning it is done on a dataset-by-dataset basis.
* set fti_method='jktebop' to use jktebop's oversampling, or 'oversample' to use phoebe's.
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This implements support for exposure times via fti_oversample in the jktebop alternate backend (and supersedes #702 by @jsinkbaek).
Closes #700
Closes #702