Appendix C: Glossary of Acronyms and Abbreviations ACIS AXAF CCD Imaging Spectrometer ACS Advanced Camera for Surveys APT Astronomer’s Proposal Tool AR Archival Research ATP Astrophysics Theory Program AURA Association of Universities for Research in Astronomy, Inc. CADC Canadian Astronomy Data Centre CCD Charge-Coupled Device CoI Co-Investigator COS Cosmic Origins Spectrograph CPAR Coordinated Parallel Observation CS Contact Scientist CVZ Continuous Viewing Zone CXC Chandra X-ray Center DD Director’s Discretionary DEC Declination DUP Duplicate Observation EDT Eastern (U.S.) Daylight Time E/PO Education/Public Outreach ERS Early Release Science ESA European Space Agency EST Eastern (U.S.) Standard Time FGS Fine Guidance Sensor(s) FTP File Transfer Protocol FUV Far Ultraviolet GO General Observer GSFC Goddard Space Flight Center GTO Guaranteed Time Observer HDF Hubble Deep Field HLA Hubble Legacy Archive HOPR Hubble Observation Problem Report HRC High Resolution Channel (on ACS) or High Resolution Camera (on Chandra) HST Hubble Space Telescope HTML Hyper Text Markup Language IDEAS Initiative to Develop Education through Astronomy and Space Science IR Infrared LOW Low Sky Background MAMA Multi-Anode Microchannel Array MAST Barbara A. Mikulski Archive for Space Telescopes MCP Micro-Channel Plate NASA National Aeronautics and Space Administration NICMOS Near Infrared Camera and Multi-Object Spectrometer NOAO National Optical Astronomy Observatory NUV Near Ultraviolet NVO National Virtual Observatory OS Observation Summary PAEC Planned and Archived Exposures Catalog PC Planetary Camera or Program Coordinator PDF Portable Document Format PI Principal Investigator PPAR Pure Parallel Observation RA Right Ascension SAA South Atlantic Anomaly SBC Solar Blind Channel SHD Shadow Time SM Servicing Mission SMD Science Mission Directorate SNAP Snapshot SSC Spitzer Science Center STAC Space Telescope Advisory Committee ST-ECF Space Telescope - European Coordinating Facility STIS Space Telescope Imaging Spectrograph STScI Space Telescope Science Institute STSDAS Space Telescope Science Data Analysis Software TAC Telescope Allocation Committee TOO Target of Opportunity U.S. United States UTC Coordinated Universal Time UV Ultraviolet WFC Wide Field Channel (on ACS) WFC3 Wide Field Camera 3 WF/PC Wide Field and Planetary Camera 1 WFPC2 Wide Field and Planetary Camera 2 XDL Cross Delay Line