Changes:

Version 1.6.7 Public Release (15 May 2024)

Fix path to static calibrations in the Paranal environment.

Version 1.6.6 Public Release (01 March 2024)

Fix retrieval of latest EOP parameters with recipe gravity_eop.

Add metrology demodulation algorithm.

Add new PCA calibration to improve differential phase calibration.

Add support for IDP products, including full OIFIT2 compliance.

Add option to remove unused pixels of FT.

Update on the tutorial and pipeline manual.

Add option to use separate calibrator for VISPHI.

New smoothing algorithm for the metrology faint/bright mode.

Improve performance of gravity_vis recipe by ~30%.

Version 1.6.0 Public Release (20 Jan 2023)

Add Strehl measurement for science channel in wide field mode (PIPE-9913).

Enable extra smoothing of metrology for GRAVITY faint.

Improved manual with astrometry tutorial.

Corrent calculation of pupil beacon spot angle for Gravity wide.

Improve performance of pupil image filtering.

Improve verbosity to better detect and deal with 2016 data.

Rename parameter phaseref-sc-maxdeg to phase-ref-sc-maxdeg.

Version 1.5.4 Public Release (19 May 2022)

Fixed gravity_dark recipe failure when processing data from the archive (2016).

Fixed reducing acquisition frames in wide field mode.

OCA rules updated to handle INS.MET.MODE.

Reflex OCA rules to distinguish between low and high FT detector gain.

Version 1.5.0 Public Release (01 July 2021)

Numerous changes to improve support for astrometry mode.

Store bad pixel map in P2VM if force-wave-ft-equal=TRUE.

Save astrored files when option astro-file is enabled.

New version of the pupil tracking algorithm.

Fix some failures in the gravity_p2vm recipe due to glitches in the metrology.

Smooth the FT metrology over 3 DITs to avoid high residuals when fitting the FT phase metrology.

Use by default the median column bias subtraction.

Include new roof position after hw intervention.

Solved pipeline failure with Strehl=nan.

Solved acquisition camera reduction failure when FEED MODE is DUAL-STS.

Solved GRAVITY pipeline crash when reducing the acquisition camera.

Pipeline status

In order to further improve the GRAVITY Data Reduction Software we encourage all users, and in particular the PIs of an observing program to provide feedback to the ESO User Support Department mentioning GRAVITY pipeline in the subject.

Known Issues

The timestamps of the OI_VIS/2 and OI_T3 columns have 12h artificially added.
The error bars are not always properly computed. In same cases they can be equal to zero even if they are valid data points. In some other cases they might contain meaningful values.
The spectral calibration between baselines is accurate to 1nm. It corresponds to is half a pixel (thus 1/4 of the spectral resolution element) in HR. This uncertainty can generate biases in the closure phase, which amount to around 3deg when observing at a group-delay of 40 microns. The absolute spectral calibration is accurate to 2nm, which correspond to half a spectral resolution element in HR.