An open optical transient survey

The Great Supernova Hunt

Join The Hunt


    The Catalina Real-Time Transient Survey finds supernovae by comparing catalogs of objects (stars + galaxies) detected in a series of images. Many of the supernova occuring bright galaxies are not present in these catalogs because they occur on top of a bright galaxy. These SN can be found by subtracting pairs of matched images, to look for changes, or by simply comparing the pairs of images visually.

    We take pictures of hundreds to thousands of bright galaxies every night and cannot look at every image by ourselves.

    We expect roughly one new SN discovery for every 1000 images.