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 3.390 version of CFITSIO


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
  • April 2016
    CFITSIO Version 3.39 released. This release contains relatively minor bug fixes and enhancements. (see what's new).
  • 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++.
  • June 2014
    CFITSIO Version 3.37 released.
  • 6 December 2013
    CFITSIO Version 3.36 released.

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: Tuesday, 18-Oct-2016 17:09:26 EDT