1000 planetary transits measurements published in ExoClock by an amateur astronomer

<p>1000 planetary transits measurements published in ExoClock by an amateur astronomer</p> <p>Yves Jongen</p> <p>Observatoire de Vaison, Vaison la Romaine, France</p> <p>Abstract :</p> <p>The ExoClock collaboration aims at improving the ephemerides of exoplanets that will be future targets for the Ariel mission.  ExoClock was launched in September 2019 and counts over 140 participants from more than 15 countries around the world.</p> <p>A participant to the ExoClock Collaboration, the author has measured and published in ExoClock more than thousand planetary transit curves. The experimental equipment is composed of two identical telescopes (Plane Wave CDK 17”) of 430 mm diameter. One telescope is in Rasteau, in the South of France. The other telescope is installed at “Deep Sky Chile”, a telescope hosting facility located in the Rio Hurtado valley in Chile, not far from the Cerro Tololo, Gemini South and the brand-new Vera C. Rubin (LSST) observatories.</p> <p>The poster will describe the experimental setup and the optical performances obtained at both sites, analyzing the strengths and weaknesses of each setup. The range of stars that can be best observed with each system will be described.</p> <p>The poster will describe also the software used for the data acquisition and processing, as well as the tactics used in data processing to maximize the probability to obtain clean transit curves.</p> <p>For high brightness stars, that could easily cause saturation in the camera, two solutions are compared: a slight defocusing, or averaging 2 4 or 8 short duration exposures for each step of the light curve</p>