Corrected local eclipse areas of Kepler-1658 agree within measured errors in Kepler and TESS data

We tested whether the primary eclipse of Kepler-1658 has a greater local area in TESS than in Kepler. We used 15 public Kepler quarters and seven public TESS sectors. The primary measure integrates flux loss over four hours after the archive correction and a quadratic local baseline fit. It accepts 96 Kepler and 37 TESS eclipses. The mean areas are 2629.5 and 2598.4 parts per million hours. The TESS to Kepler ratio is 0.988, with a whole-segment bootstrap 95% interval of 0.857 to 1.112. An approximate small-segment check gives 0.814 to 1.162. Corrected SAP flux and alternative local area reductions are also consistent with equal areas. A separate shape fit gives a depth ratio of 1.152 when it allows residual mission flux levels. Thus the area result depends on the baseline and statistic and does not set a firm physical color limit. The observing epochs also differ. We report a reproducible null comparison, not a planet or binary discovery. The package contains all 22 original FITS files, archive provenance, a saved analysis plan, event tables, control and injection results, four figures, source code, and reproduction instructions.

Kepler-1658 · KIC 3861595 · TIC 377873569 · TESS · Kepler · eclipsing binary · eclipse area · crowding correction · reproducible astronomy