CFITSIO - A FITS File Subroutine Library

Quick Start Guide C Reference Guide

CFITSIO is a library of C and Fortran subroutines for reading and writing data files in FITS (Flexible Image Transport System) data format. CFITSIO provides simple high-level routines for reading and writing FITS files that insulate the programmer from the internal complexities of the FITS format. CFITSIO also provides many advanced features for manipulating and filtering the information in FITS files.

Download the latest 4.4.0 version of CFITSIO

Documentation

Help Desk

  • Submit questions or bug reports related to CFITSIO to the CFITSIO/CCFITS help desk.

Related Software Tools

Interfaces for calling CFITSIO from Other Programming Languages

Contact the original developer for questions about these interfaces.

Latest News
  • Feb 2024
    CFITSIO Version 4.4.0 released with bug fixes, enhancements and a reorganization to include additional FITS utility programs. (see what's new)

  • Nov 2023
    CFITSIO Version 4.3.1 minor patch release to make the modify longstring keyword functions fully compatible with the read/write longstring keyword enhancements in v4.3.0.
  • Jul 2023
    CFITSIO Version 4.3.0 released with bug fixes and enhancements.
  • Nov 2022
    CFITSIO Version 4.2.0 released with security vulnerability fixes along with other bug fixes and enhancements.
  • Mar 2022
    CFITSIO Version 4.1.0 released with bug fixes and enhancements.
  • Jul 2021
    CFITSIO Version 4.0.0 released with bug fixes and enhancements.
  • Aug 2020
    CFITSIO Version 3.49 released with bug fixes and enhancements.
  • Apr 2020 CFITSIO Version 3.48 released with bug fixes and enhancements.
  • May 2019
    CFITSIO Version 3.47 released with bug fixes and enhancements, including FTPS capability.
  • May 2018
    CFITSIO Version 3.45 released with bug fixes and enhancements.
  • April 2018
    CFITSIO Version 3.44 released with security fixes along with other bug fixes and enhancements. We highly recommend upgrading to this version.
  • March 2018
    CFITSIO Version 3.43 released with security vulnerability fixes along with other bug fixes and enhancements.
  • September 2017
    CFITSIO Version 3.42 released with some significant bug fixes and enhancements.
  • November 2016
    CFITSIO Version 3.41 released with some significant bug fixes and enhancements.
  • April 2016
    CFITSIO Version 3.39 released with some relatively minor changes.
  • February 2016
    CFITSIO Version 3.38 released. This release contains a critical bug fix.

The latest reference to CFITSIO is: Pence, W. 1999, in ASP Conf. Ser., Vol. 172, Astronomical Data Analysis Software and Systems VIII, ed. D. Mehringer, R. Plante, and D. Roberts (San Francisco: ASP), 487

CFITSIO was developed by: Dr. William D. Pence,

Any questions or bug reports related to CFITSIO should be submitted to the CFITSIO/CCFITS help desk.


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Last modified: Wednesday, 28-Feb-2024 15:29:28 EST