Roger Dymock

Hi Gordon, Glad to be of help. You don’t need to do your own estimate as HOPS does it for you – 0.149 as on your light curve. Measuring the total depth of the light curve will give you an incorrect (too large which is what you have) a result as something called limb darkening has to be taken into account. See https://britastro.org/sites/default/files/Infinite%20Worlds%20Issue%209.pdf for an explanation of this.