Introduction

EasyFITS is a Julia package for reading and writing files in FITS format, a Flexible Image Transport System, widely used in astronomy.

The source code of EasyFITS is on GitHub.

Related software

• FITSHeaders.jl is a Julia package used by EasyFITS to efficiently manage FITS header cards. You may read FITSHeaders documentation to learn how to deal with FITS header cards when using EasyFITS.

• CFITSIO is the standard C library for managing FITS files and is used by EasyFITS.

• FITSIO is another Julia package for reading/writing with FITS files. FITSIO is also based on the CFITSIO C library. Compared to FITSIO, EasyFITS attempts to be more intuitive and more type-stable.

• CFITSIO_jll is the Julia artifact providing the CFITSIO C library used by the EasyFITS and FITSIO packages.

Table of contents

• Structure of FITS files
• Reading FITS files
• • Direct reading of FITS data
  • Direct reading of a FITS header
  • Advanced reading of FITS files
• Writing FITS files
• • Direct writing of a FITS file
  • Advanced writing of a FITS file
• Navigating in FITS files
• • Open a FITS file
  • Indexing and searching HDUs
  • Stream-like operations
• FITS Image HDUs
• • Image HDU properties
  • Reading a FITS Image
  • Creating an image HDU
• FITS Table HDUs
• • Reading a single table column
  • Reading several table columns
  • Creating a table HDU
  • Writing table columns
  • Table HDU Properties
• Reference
• • Types
  • Aliases
  • Direct reading/writing of FITS files
  • FITS files
  • FITS Image HDUs
  • FITS Table HDUs
  • FITS header
  • FITS Header Data Units (HDUs)
  • Utilities
• Index