Groningen Image Processing System
This is the home page of the GIPSY online documentation. GIPSY is a highly interactive software system for the reduction and display of astronomical data.

Document Search Service

In order to search, choose a document type. Then type one or more alphabetic strings in the input field and click on the "Search" button. The search will find the documents which contain all supplied strings (''AND'' searching). If exact matches on words are required, choose the 'exact match' option.

Documentation topics:

• Documentation structure

• News about GIPSY (February 27, 2013: New task VISIONS)
• Document Search Facility

• What is GIPSY
• Download and Installation Guide (last update: July 2023)
• Getting started
• Hermes, the user interface
• Ggi, the graphical user interface
• Data structure, GDS
  • error codes
• User input
• Image display: GIDS
• Getting help

• Recipes
• Categorized task list
• List of all tasks
• Supplementary Documentation

• Programming in GIPSY
  • Programmers Guide
  • Event-driven Tasks and Graphical User Interfaces
  • Programming (including scripting) in Python
  • GIPSY/Python Recipes and examples

• Plans and Activities (March 11, 2011)
• News Files and Error Reports

• GIPSY-related links:
  • Cooperation with the IAA and related Wiki.
  • GIPSY user survey results
  • WHISP survey project
    Westerbork observations of neutral Hydrogen in Irregular and SPiral galaxies.
  • IRAS Data Server
    The IRAS Data Server contains the full set of IRAS Survey data. Registered users can easily obtain images and spectra. (Located at Kapteyn, operated by SRON)
  • Data reduction software for MPE's 3D Imaging NIR Spectrometer.
    (Max-Planck-Institut für extraterrestrische Physik)

Contact information

For reporting problems with GIPSY software, you can either run the task REPORT or mail to gipsy@astro.rug.nl. This address can also be used for other questions, comments, etc. about GIPSY. You can also follow us on

Kapteyn Institute home page

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