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 3.430 version of CFITSIO - see what's new

  • Unsupported previous versions of CFITSIO and FITSIO


    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:

  • Latest News
    • March 2018
      CFITSIO Version 3.43 released with security vulnerability fixes along with other bug fixes and enhancements. We highly recommend upgrading to this version. (see what's new).

    • 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.
    • January 2016
      New version 2.5 of CCFITS has been released. CCfits is an object oriented interface to the CFITSIO library written in C++.

    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, 07-Mar-2018 11:29:59 EST