A blind method to detrend instrumental systematics in exoplanetary light-curves

Understand

The study of the atmospheres of transiting exoplanets requires a photometric precision, and repeatability, of one part in $\sim 10^4$.

• This is beyond the original calibration plans of current observatories, hence the necessity to disentangle the instrumental systematics from the astrophysical signals in raw datasets.
• Most methods used in the literature are based on an approximate instrument model.
• The choice of parameters of the model and their functional forms can sometimes be subjective, causing controversies in the literature.