Interesting very eccentric EA KID 10909274 has a period 39.2381401d, wich gives good agreement between ZTF and Kepler data.
However, imported from Zubercal data does not show so agreement - there is valuable phase offset between ZTF and Kepler, and attempts to adjust period give sad result.
What I am doing wrong? How to use Zubercal data correctly?
It looks like a epoch difference in the phase calc equations?
OK, I’ll check, but epoch must be the same.
Looks to me like the actual time defining phase 1.0 is different for the two datasets.
Thank you folks! I just have found my stupid mistake.
Zubercal gives dates in MJD (for example, 59452.306693). I used naive conversion HJD = MJD + 2400000. However correct formula is HJD = MJD + 2400000.5.
So now Zubercal and Kepler points lay close on the phase plot.
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