... Up: Data Pipelines . ... An On-the-Fly Calibration System (OTFC) is being developed for selected instruments of the Hubble Space Telescope (HST) with a primary goal of providing HST Archive users with the most up-to-date calibration in their archive retrievals. The first instrument selected for this project is the Wide-Field/Planetary Camera-2 (WFPC-2), and a calibration pipeline for the WFPC-2 has been developed for OTFC using the OPUS pipeline architecture. ... The pipeline tasks are: . ...