QFitsView
Author: Thomas Ott

# Introduction

Click on the areas in the screenshot to navigate to the respective help pages

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 (you can click on the areas in the screenshot to navigate to the respective help pages):

- 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.

For instructions how to obtain and install QFitsView, go to the installing page.

### The Author

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

### Credits

The following packages and code snippets were used in developing QFitsView

- Qt - Cross-platform application and UI framework
- Mini-Icons from FAMFAMFAM
- QCustomPlot by Emanuel Eichhammer
- RapidXml by Marcin Kalicinski
- Galfit by Chien Peng
- ...and also all the credits for DPUSER - The Next Generation