PhAst with an image loaded and catalog stars up to magnitude 18 overlaid.

PhAst provides a dedicated tool for circular aperture photometry. Include the effects of seeing and the color of your object in your photometric measurements and quickly take measurements of many objects.

Easily calibrate a single image or an entire directory with a flat, bias, and dark image. Quickly generate an astrometric solution with PhAst's integration of SExtractor, SCAMP, and missFITS.

Quickly annotate your images with text labels and circles.