Orateur
Description
The NSF-DOE Vera C. Rubin Observatory revealed its first images to the world on June 23 2025, taken with the world's largest digital camera. With a field of view of 9.6 deg², this 3200-megapixel camera will scan the entire southern sky in only three nights and in six color bands over a period of ten years. Combined with wide-field optics, the Vera C. Rubin camera will produce images of unprecedented depth, revealing very distant and faint objects that have not yet been observed. This ten-years survey called LSST (Large Survey of Space and Time) is expected to drive significant progress in cosmology and astrophysics, particularly in constraining dark matter and dark energy.
After presenting the observatory with a focus on French contributions, I will provide an overview of the scientific topics that will be addressed using Rubin data. I will place particular emphasis on cosmological analyses that can be performed using the weak lensing probe, highlighting the importance of photometric and astrometric calibration in order to achieve the high-precision objectives.
