Davoudi, F.Poro, A.Alicavus, F.Rahimi, J.Lashgari, E.Ghanbarzadehchaleshtori, M.Boudesh, A.2025-01-272025-01-2720201384-10761384-1092https://doi.org/10.1016/j.newast.2020.101439https://hdl.handle.net/20.500.12428/28313The first light curve solutions of the stars EW and HN in the Pisces constellation are presented. Photometry, and its' periodic changes are calculated and discussed. The analysis of the O-C diagram is done by the MCMC approach in the OCFit code and a new ephemeris is provided for the two binary systems. The results show that EW Psc is a near contact eclipsing binary system with a photometric mass ratio q = 0.587, and the fillout factor is -0.034 and -0.018 for the primary and secondary components, respectively. The solution results also show that the system HN Psc is a weak-contact W UMa eclipsing binary with a photometric mass ratio q = 0.853, and with a fillout factor of 5.6%. The light curves solutions required a cold spot to account for the O'Connell effect.eninfo:eu-repo/semantics/openAccessPhotometryEphemerisO'ConnellIndividualEW Psc and HN PscArticle8110.1016/j.newast.2020.101439Q4WOS:0005642667000022-s2.0-85088241880Q2