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Chapter 20
STIS Data Structures

In This Chapter...

Overview / 20-1
STIS File Structures / 20-2
Types of STIS Files / 20-6
Headers, Keywords, and Relationship to Phase II / 20-9
Error and Data Quality Arrays / 20-13
STIS Paper Products / 20-15

This chapter explains how STIS observations are stored in STIS data files. When you receive STIS data files from the Archive, they will be in FITS format, and they should remain in FITS format (i.e., do not convert the format with strfits). Chapter 2 describes the structure of FITS files, explains how images and tables are stored in FITS extensions, and shows how to access data in these extensions. If you are not familiar with FITS extensions, please read Chapter 2 first.



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