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 30M telescope and the NOrthern Extended Millimeter Array NOEMA (except VLBI observations). GILDAS is easily extensible. GILDAS is written in Fortran-90/95, with a few parts in C/C++ (mainly keyboard interaction, plotting, widgets).

ACKNOWLEDGMENT IN PUBLICATIONS

The GILDAS team welcomes an acknowledgment in publications using GILDAS software to reduce and/or analyze data.
Please use the following reference in your publications: http://www.iram.fr/IRAMFR/GILDAS

RECENT MILESTONES

(detailed news here)

oct-15
The standard HIFI FITS science data format is now directly supported by CLASS.
aug-15
OpenMP is now supported at compilation time with "source admin/gildas-env.sh -o openmp". Up to now, it is mainly used in MAPPING gridding and deconvolution commands.
jul-15
The NOEMA calibration pipeline now successfully handles in parallel up to 7 antennas with the WIDEX backend and up to 6 antennas with the narrow band correlator.
jun-15
The support of the sky coordinate projections was enhanced in CLASS. IRAM Memo 2015-1.
may-15
The ALMA cycle 3 configurations files were added for use in the ALMA simulator. The LMV command now correctly imports ALMA data cubes produced by CASA.
feb-15
GILDAS was upgraded to accompany the change of name of the IRAM interferometer from PdBI to NOEMA.
jan-15
Ifort 14 is now supported. HPUX, OSF, Solaris, SunOS, Alpha, VMS, ULTRIX are officially not supported anymore: Associated code was cleaned out.
jul-14
The CLIC data format was upgraded to overcome several limits (size of an observation limited to 8 GB, size of a file limited to 1 TB, ...) that will be reached by the NOEMA project.
jun-14
Phase self-calibration is now available in MAPPING.
apr-14
After 20 years, the CLASS data format evolved to overcome various limitations that will soon be reached with the advent of multi-beams and large bandwidth receivers (size of an observation limited to 8 GB, size of a file limited to 1 TB, ...).
mar-14
A new language, named LINEDB, generalize the interface to the JPL and CDMS online databases, previously introduced in the WEEDS extension of CLASS. The WEEDS extension was mostly rewritten to use the new possibilities offered by the new LINEDB language.
feb-14
The CYGWIN OS is again suported by GILDAS.
dec-13
The ALMA cycle 2 configurations files were added for use in the ALMA simulator. Mosaic of more than 99 fields are now supported.
nov-13
The frequency plan associated to the new NOEMA LO system was upgraded.
jun-13
ASTRO can now parse the ALMA Observing Tool files (.aot) and plot the frequency setup.
may-13
Numpy 1.7 & 1.8 are now supported. Support for Numeric is obsolescent.
apr-13
The CLASS GET command is now 30% faster.
mar-13
CLIC is now backward compatible with data older than 2007 (previous receiver generation). It means that clic07 is obsolete, i.e., nor supported neither distributed anymore.
feb-13
The Herschel/HIFI instrument is now recognized by the TABLE and XY_MAP commands of CLASS.
jan-13
MAPPING is able to handle unpolarized ALMA data. You just have to fill the calibrated visibilities into the MAPPING uv table format through a combination of the FITS command and the UV_SPLITPOLAR task.
dec-12
The new handling of the frequency/velocity axes is now officially the default in CLASS. This removes previous approximations that were incorrect for wide bandwidth spectra.
nov-12
The GILDAS administrative scripts were made POSIX compliant.
oct-12
The following CLASS defaults have changed: SET PLOT is now HISTO, SET FORMAT is LONG and SET UNIT is FREQ VELO.
sep-12
A major upgrade of CLIC happened. This ensures simplification of the bookkeeping of the atmospheric calibration.
jul-12
ALMA Cycle 1 correlator modes description have been added to inside ASTRO.
jun-12
GILDAS hypercubes can now have up to 7 dimensions.
may-12
The files necessary to read the SOFIA user section have been made available inside CLASS. The documentation is available at the following URL: http://www.iram.fr/IRAMFR/GILDAS/doc/pdf/class-user.pdf
jan-12
A large upgrade of the GILDAS Data Format (project known as GDF-V2) was introduced to support arrays of more than 2 giga elements (the limit that an INTEGER*4 can encode).
dec-11
The kernel team have fixed the bug which randomly prevented the reading of binary files (e.g. CLASS files). The diagnostic command "SIC DEBUG GFORTRAN" command (see the Aug10 NEWS for a detailed description) should always return the following output "I-SIC DEBUG, No problem during the IEEE to EEEI conversion" Please send an email to gildas@iram.fr if this is not the case.
nov-11
The (preliminary) cycle 1 configurations were added to the ALMA simulator under the names aca-cycle1.cfg (6 antennas) alma-cycle1-*.cfg (32 antennas, 9 configurations). The VECTOR FITS command is now able to write/read data cubes in a compatible way with CASA.
oct-11
The new MODIFY FREQUENCY command enables to consistently recompute the velocity scale of all data files (UV, Dirty, Clean, ...) to the desired value.
sep-11
The MS/WINDOWS binaries are now built using the native WINDOWS system libraries with MINGW. gfortran is now the default FORTRAN compiler (even under MAC OSX).
jul-11
The support of the Broad Band Continuum backend was added in MIRA.
may-11
The ALMA simulator now contains the official configurations of the ALMA early science (cycle 0).
apr-11
This release is the first stable release including the changes linked to the GREG2011 project (see NEWS for the Feb11 beta release). Starting with this release, the Linux, MacOSX and Windows version of GILDAS share the same source codes. They thus should work equally well.
feb-11
First beta release of the new GILDAS kernel (project known as GREG2011).
dec-10
An important bug fix was made in CLASS for DSB spectra (e.g., some of the HIFI receivers): the sign of the correction on the image frequency axis in the MODIFY VELOCITY command is now correct.
oct-10
CLASS can now select all the spectra of a file whose frequency axis intersect a given frequency range.
sep-10
Thanks to F.Levrier (from LERMA), the most recent ALMA configurations were updated in the ALMA simulator.
aug-10
New 30m time/sensitivity estimators for EMIR, HERA and MAMBO.
jul-10
CLASS77 is officially obsolete.
may-10
CLIC now supports the new WIDEX backend at PdBI.
apr-10
First release of the WEEDS CLASS extension (an interface to line databases and line modelling).
dec-09
MIRA now uses a recent version of ATM (2009) to calibrate 30m data.
oct-09
ASTRO is now able to setup observations for the next PdBI correlator, which should arrive at Bure end of 2009, beginning of 2010.
sep-09
MIRA now fully support EMIR (standard and polarimetry modes).
aug-09
A memo describing the detailed behavior of the CLASS AVERAGE command (including the recent bug fixes) is available here: http://www.iram-institute.org/medias/uploads/class-average.pdf
may-09
A recent version of ATM (by J.R.Pardo) is now interfaced to ASTRO.
apr-09
In CLASS, an LMV command was introduced to convert a gildas LMV data cube into a set of class spectra. The CUBE command, which was used to produce a spectrum cube from a set of spectra observed on a regular grid (e.g. rasters), is now replaced by the combination of TABLE and "XY_MAP /NOGRID".
feb-09
The time estimator for the new eight mixer receivers for the 30m telescope, EMIR, which will be installed in March/April 2009, is now available in ASTRO. Please note that only the sources (gildas-src-feb09c.tar.gz) and the FINK version of the MAC/OSX version are up-to-date. The MAC/OSX and Windows binaries do not contain the EMIR time estimator.
nov-08
CLASS spectra writing was considerably optimized for data files containing more than 100000 spectra.
jul-08
The FITS command now knows how to handle the CDi_j FITS keyword for rotated images. It also knows again how to read AIPS UVFITS data.
jun-08
There is a new binary version of GILDAS under Intel Mac. Gildas is now also available in Fink.
mar-08
There is a new binary version of GILDAS under WINDOWS.
feb-08
CLASS90 is now the default version of CLASS. Although still distributed in GILDAS, CLASS77 is now obsolescent, i.e. not maintained anymore. Reminder: CLASS90 has all the CLASS77 possibilities, plus a much improved On-The-Fly support (see IRAM memo 2005-1).
dec-07
GAUSSCLUMP is now part of the standard GILDAS compilation.
nov-07
Major overhaul of the gildas building system.
oct-07
ASTRO has been adaptated to support the new 2mm receivers for Plateau de Bure Interferometer.
jul-07
MIRA is now shipped with GILDAS.
jun-07
First release of a stable CLIC version tailored for the new generation of receivers at bure.
may-07
A fully new user interface for MAPPING.
apr-07
A fully new (POSIX compliant) interprocess communication for GILDAS.
mar-07
GILDAS now supports MacOSX on Intel processors.
feb-07
The REPROJECT task is able to use a template image that has a different velocity/frequency axis.
dec-06/jan-07
Fix of many small CLASS90 bugs.
nov-06
First steps towards a binding between PYTHON and SIC.
sep-06
Major upgrade of ASTRO to deal with the coming new generation of receivers at Bure.
jun-06
Improved support for NaN and Inf in SIC.
may-06
The XY_MAP command of CLASS90 now enables griding in a rotated frame compare to EQUATORIAL or GALACTIC.
apr-06
The handling of pointing has been fully rewritten in TELCAL with the introduction of the double beam fitting.
mar-06
GILDAS now supports 64–bit machines (only AMD64 and EMT64 processors) under Linux using ifort v9.0 compiler. Details here.
feb-06
CLASS90 is now shipped with GILDAS (see IRAM memo 2005-1).
jan-06
New PdBI extended configurations have been introduced in ASTRO and CLIC.