# General Information

## Contact and availability

GILDAS home page:

`https://www.iram.fr/IRAMFR/GILDAS`

The most recent GILDAS version is available in the
[INSTALL > DOWNLOAD](https://www.iram.fr/IRAMFR/GILDAS/install.html#ii---download)
section of this web page.

## Introduction

GILDAS is a collection of state-of-the-art software oriented toward
(sub-)millimeter radioastronomical applications (either single-dish or
interferometer). It is daily used to reduce all data acquired with the
[IRAM](https://iram-institute.org/)
[30m](https://iram-institute.org/science-portal/30-meter-telescope/)
telescope and the NOrthern Extended Millimeter Array
[NOEMA](https://www.iram-institute.org/science-portal/noema/) (except
VLBI observations). GILDAS is written in Fortran 2013, with a few parts
in C/C++ (mainly keyboard interaction, plotting, widgets) and others in
Python (e.g. CLASS\\WEEDS).

## Other information

Many more information may be found in:

- `CREDITS.md`   List of historical developers and current maintainers
- `INSTALL.md`   Installation guidelines
- `VERSION`      Version you are looking at
- `NEWS.md`      Last major changes commented
- `ONEWS.md`     Older changes commented
- `Tree-Structure` Description of the tree structure
