In what units are the time series light curves given?
The time units are seconds (SI). The “flux” units are “electrons per cadence” and may be thought of as an instrumental flux unit closely approximating a linearized unit (for unsaturated pixels). There are no plans for the Project to produce a product in a calibrated absolute magnitude system. Information from the GO office takes precedence over this response. • UTC, barycentric time, MJDs, etc. – What does Kepler use? Kepler provides time in UTC and TDB (barycentric dynamical time, without the relativistic correction), formatted as MJD or reduced JD. There are several FITS keywords in the Kepler data headers that relate to time. For light curves and target pixel files, the relevant time keywords are in the extension header. For FFIs, the time keywords are in the primary header. In the discussion below, the time is taken at the mid-point of the first and last cadences unless otherwise noted. Times expressed in UTC or MJD are geocentric, that is they are not corrected to the Kepler – Sol
