Table of Contents Preface Part I: Introduction to Reducing HST Data Chapter 1: Obtaining HST Data 1.1 Archive Overview 1.1.1 Archive Processing 1.1.2 Archive Registration 1.1.3 Archive Documentation and Help 1.2 Obtaining Data via the MAST Web 1.2.1 MAST Overview 1.2.2 Hubble Legacy Archive 1.2.3 High-Level Science Products 1.3 Obtaining Data with StarView Chapter 2: HST File Formats 2.1 HST Data Files 2.2 Multi-Extension FITS File Format 2.2.1 Working with Multi-Extension FITS Images in IRAF 2.2.2 Working with FITS Table Extensions 2.3 GEIS File Format 2.3.1 Converting Waiver FITS to GEIS 2.3.2 GEIS Data Groups 2.3.3 Working with GEIS Files 2.3.4 The waiver FITS Format Chapter 3: Analyzing HST Data 3.1 Analysis Options for HST Data 3.1.1 IRAF/STSDAS 3.1.2 PyRAF 3.1.3 Python 3.1.4 Interactive Data Language (IDL) 3.1.5 Fortran and C 3.1.6 Java 3.2 Navigating STSDAS 3.2.1 STSDAS Structure 3.2.2 Packages of General Interest 3.3 Displaying HST Images 3.3.1 The Display Task 3.3.2 Working with Image Sections 3.4 Analyzing HST Images 3.4.1 Basic Astrometry 3.4.2 Examining and Manipulating Image Data 3.4.3 Working with FITS Imsets 3.4.4 Photometry 3.4.5 Combining Dithered HST Datasets with MultiDrizzle 3.5 Displaying HST Spectra 3.5.1 Specview 3.5.2 COS and STIS Spectra 3.5.3 FOS and GHRS Spectra 3.5.4 Producing Hardcopy 3.6 Analyzing HST Spectra 3.6.1 Preparing COS and STIS Spectra for Analysis in IRAF or PyRAF and STSDAS 3.6.2 Preparing FOS and GHRS Data 3.6.3 Photometry 3.6.4 General Tasks for Spectra 3.6.5 STSDAS Fitting Package 3.6.6 Specfit 3.7 References 3.7.1 Available from STScI 3.7.2 Available from NOAO 3.7.3 Other References Cited in This Chapter Part II: WFC3 Data Handbook Introduction Chapter 1: WFC3 Overview 1.1 Instrument Overview 1.1.1 The UVIS Channel 1.1.2 The IR Channel Chapter 2: WFC3 Data Structure 2.1 Types of WFC3 Files 2.1.1 Data Files and Suffixes 2.1.2 Auxiliary Data Files 2.2 WFC3 File Structure 2.2.1 UVIS Channel File Structure 2.2.2 IR Channel File Structure 2.2.3 Contents of Individual Arrays 2.3 Data Storage Requirements 2.4 Headers and Keywords Chapter 3: WFC3 Basic Calibration 3.1 Calibration Overview 3.1.1 Image Processing Summary 3.2 Overview of calwf3 3.2.1 Structure and Processing Flow 3.2.2 UVIS Processing 3.2.3 IR Processing 3.2.4 Running calwf3 3.3 Keyword Usage 3.4 Description of Calibration Steps 3.4.1 wf3ccd 3.4.2 wf32d 3.4.3 wf3ir 3.4.4 wf3rej 3.5 Calibration of WFC3 Spectroscopic Data Chapter 4: WFC3 Images: Distortion Correction and MultiDrizzle 4.1 WFC3 Geometric Distortion 4.1.1 The UVIS Channel 4.1.2 The IR Channel 4.2 WFC3 Dither Patterns 4.3 MultiDrizzle: Distortion Correction and Dither Combination Chapter 5: Recalibrating WFC3 Data 5.1 When should I recalibrate my data? 5.2 Manual Recalibration of WFC3 Data 5.2.1 Requirements for Manual Recalibration 5.2.2 calwf3 Examples 5.2.3 MultiDrizzle Examples 5.3 Creating Custom Association Tables Part III: Appendixes Appendix A: IRAF Primer A.1 IRAF Overview A.2 Initiating IRAF A.2.1 Setting Up IRAF in Unix/Linux A.2.2 Starting and Stopping an IRAF Session A.3 IRAF Basics A.3.1 Loading Packages A.3.2 Running Tasks A.3.3 Getting Help A.3.4 Setting Parameters A.3.5 Setting Environment Variables A.3.6 File Management A.3.7 Troubleshooting A.4 PyRAF Capabilities A.5 Accessing IRAF, PyRAF, and STSDAS Software A.5.1 Accessing the Synphot Data Set Appendix B: HST File Names B.1 File Name Format B.2 Rootnames B.3 Suffixes of Files Common to All Instruments B.3.1 Historical File Structures B.4 Associations Appendix C: Observation Logs C.1 Observation Log Files C.1.1 Jitter File Contents C.1.2 Observation Log File Contents C.1.3 Observation Log File Contents (February 1997 version) C.1.4 Jitter File Contents (February 2003 Version) C.2 Retrieving Observation Logs C.3 Using Observation Logs C.3.1 Guiding Mode C.3.2 Guide Star Acquisition Failure C.3.3 Moving Targets and Spatial Scans C.3.4 High Jitter Acronym List Index