... As modern observatories evolve to production units delivering data products and calibrated scientific data to the end users, new challenges arise in assessing the quality of data products. ... Taking the analogy of speed control on a motorway we can describe the system as a device (radar) collecting measurements of the system performance (passing cars). ... One of the direct applications of quality control is the verification of instrument performance based on the analysis of calibration exposures. ...

... Through development of in-depth knowledge of spectrographs on HST, the ST-ECF has established physical modelling of spectrometers, applied to FOS and STIS, and slitless spectroscopy, as applied to NICMOS and ACS, as its areas of instrument science expertise. WFC3 grism mode (@STSCI) . ACS grism mode (@STSCI) . NICMOS grism mode (@STSCI) . STIS Calibration Enhancement (@STSCI) . FOS . Slitless Spectroscopy Simulations (@STSCI) . TinyTim with WFC3 support (@STSCI) . ...

... Overview and field layouts . ... Release Content . ... As part of the Great Observatories Origins Deep Survey ( GOODS ), near-infrared imaging observations of the Chandra Deep Field South (CDF-S) are being carried out in J, H, Ks bands, using the ISAAC instrument mounted at the Antu Unit Telescope of the VLT at ESO's Cerro Paranal Observatory, Chile. ... Since ISAAC observations are still ongoing, this release consists of J and Ks images of fields that have already been completed and are . ... 12600...