STDWeb performs photometry and transient detection in astronomical images through a web-based interface. It accepts FITS images and provides interactive masking, detects sources, performs astrometric calibration, and calibrates photometry with supported catalogs and filters. The software subtracts templates using either automatic or user-provided images and performs forced photometry on targets in original or difference images. STDWeb includes experimental transient detection with basic artifact rejection. The code relies on STDPipe (ascl:2112.006) and uses several external tools, including SExtractor (ascl:1010.064), HOTPANTS (ascl:1504.004), and Astrometry.net (ascl:1208.001). STDWeb runs as a web service with a back-end task queue suitable for deployment in observatory or archive environments.

STDPipe is a set of Python routines for astrometry, photometry and transient detection related tasks, intended for quick and easy implementation of custom pipelines, as well as for interactive data analysis. It is implemented as a library of routines covering most common tasks and operates on standard Python objects, including NumPy arrays for images and Astropy (ascl:1304.002) tables for catalogs and object lists. The pipeline does not re-implement code already implemented in other Python packages; instead, it transparently wraps external codes, such as SExtractor (ascl:1010.064), SCAMP (ascl:1010.063), PSFEx (ascl:1301.001), HOTPANTS (ascl:1504.004), and Astrometry.Net (ascl:1208.001), that do not have their own Python interfaces. STDPipe operates on temporary files, keeping nothing after the run unless something is explicitly requested.