---
name: "QFitsView"
section: "1"
platform: "linux"
package: "qfitsview"
version: "4.3+dfsg-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/QFitsView"
---

# QFitsView(1)

FITS file viewer based on DPUSER

## NAME

QFitsView - FITS file viewer based on DPUSER

## SYNOPSIS

**QFitsView** *filename*

## DESCRIPTION

QFitsView is a FITS file viewer. It can display one, two, and three-dimensional FITS files. It is written completely in C++ and uses the Qt widget library, which makes it available for all major platorms: Windows, MAC OS-X, and many Unix variants. Its main window consists of the following areas:

- •

  At the top, a toolbar which provides quick access to commonly used actions

- •

  At the left:\
    **-** information of the pixel under the cursor (pixel coordinates, pixel value and WCS coordinates)\
    **-** a magnifier\
    **-** a total view of the image

- •

  At the bottom, the DPUSER command and output window

- •

  Also at the bottom, in case a FITS datacube is displayed, the spectrum under the cursor

- •

  The central part of the window shows the actual image

QFitsView has three modes of operation, depending of what kind of data is being displayed. In case of one-dimensional data, the data are shown in an x-y plot. Two-dimensional images are shown in the main window. Three-dimensional data cubes can be displayed in a variety of ways, the third dimension is shown again as a x-y plot at the bottom of the image display.

## BUGS

The Debian version of dpuser was compiled without PGXTAL support which is not supported by the underlying graphics library.

## AUTHOR

QFitsView was written by Thomas Ott as a software package for reducing astronomical speckle data. If you have comments or suggestions regarding QFitsView, please feel free to contact him.

## SEE ALSO

**dpuser (1)**

The full documentation of QFitsView is available at /usr/share/doc/qfitsview or online at \<https://www.mpe.mpg.de/~ott/qfitsview/\>.