Hello, this is Jentie Males. I'm a chemistry teacher in Notre Dame Disparence, high school. This year's was one of my classes of year 11, re-bought in the astronomy projects in order to observe an exoplanet. During the first months, I divided the class. In groups of two or three students, and they started to search information, re-bought transits. You may ask yourself what the transit is. It's moments when planet passes in front of its doors so we can observe a decline of luminosity. The family out themselves with all the information and data. They also search what was not a lot of books, the eclipse, death and all the information they had to know for this project. After we choose the exoplanet WASP 42B, which we call Opsel the 26th April from 8th 42PM to 9th 52PM in solar hours, that means from 10th 42PM to 11th 52PM. We use the website ETD Exoplanet Transit Database for this. We call Opsel it from distance thanks to the observatory of Opsolence. We had to improve the coordinates of the observatory, then it showed us this page where we called see the time, the date and which exoplanet was observable. The only supplementary information we had to put were the dates of observing and then it just gave us results. The evening of the 13th and the 26th April, the students came to school to assist measuring the launch of the procedure for taking pictures. But we had some complications. On the first night we called them use it because of a technical revision. And for the second night, the meteorologic conditions were very bad. So I called seeing Budwan, my correspondents at the observatory. Yes? Hi Siri, my two observatory nights failed. How can I do? I need some break for my students so they could work on them. No, don't worry, I can give you some picture of mine that took a few months ago so your students can have a research. Wow, you're so great, thank you so much! We finally had pictures to analyze. It was great help. Each group had an exact number of 10 pictures to analyze. So for this we used software called salsa J. PNCJ is a free software allowing to process astronomy images obtained by professional observatories of telescopes. It's very useful for analyzing a photometry which is the science measuring the intensity of light on a picture. Firstly, go to photometry settings and change the stars and sky radius. We selected respectively them and 17 pixels. After doing that, zoom until you have the stars you want to study on. Select the photometry tool and point on the center of the star and choose one or two different stars of the same intensity of light. And apply the same procedure. Be careful when you do it in a few pieces. You have to use the same reference star and in the same order every time. Yes, so the students use it by themselves and some miserisels of their observations. Then I made a spreadsheet. With the spreadsheet we had to make a graph to show the loss of light which occurs during the transit. Then each group had to prepare a summary of the work effect rate.