SIPGI: an interactive pipeline for spectroscopic data reduction
The Spectroscopic Interactive Pipeline and Graphical Interface (SIPGI) is a complete spectroscopic data reduction
environment based on the VIMOS Interactive Pipeline and Graphical Interface (VIPGI), the pipeline our group designed
to carry out the reduction of optical spectroscopic data acquired with the VIMOS spectrograph.
The VIPGI efficiency and the quality of its data reduction products were such to make it the reduction pipeline of the major extragalactic surveys carried out with VIMOS (e.g. VVDS, zCosmos, VUDS, VIPERS, VANDELS). As a result of this long-lasting experience and thanks to the intrinsic adaptability of its design and capabilities, about ten years ago VIPGI was reshuffled into SIPGI, a new pipeline capable of reducing both optical and near-infrared spectroscopic data.
SIPGI has been used by the LBT spectroscopic data reduction center located at INAF-IASF Milan to reduce all the MODS and LUCI spectra acquired during the Italian time in the last ten years. This LBT-customized SIPGI version is now distributed as a stand-alone program.
IMPORTANT NOTE 1 (MODS and LUCI)

IMPORTANT NOTE 2 (MODS only)
A new Archon CCD controller was installed on MODS on 1 September 2025. For observations acquired after this date, SIPGI continues to use the previous GAIN and read-out noise (RON) values. SIPGI will be updated as soon as the corresponding GAIN and RON measurements for the Archon controller become available from LBTO.
If you want to be notified when the values will be available, just leave your email address when downloading SIPGI.
For more information, see the MODS detector characteristics page
For any question, comment, suggestion or for any request of help in the reduction of MODS/LUCI spectra with SIPGI, please contact us at lbt-italia-spec@inaf.it
SIPGI paper
SIPGI: an interactive pipeline for MODS and LUCI spectroscopic data reduction
A. Gargiulo, M. Fumana, S. Bisogni, P. Franzetti, L. P. CassarĂ , M. Scodeggio, B. Garilli, G. Vietri
MNRAS, 514, 2902 (2022)
SIPGI software DOI
10.20371/inaf/sw/2021_00002
The VIPGI efficiency and the quality of its data reduction products were such to make it the reduction pipeline of the major extragalactic surveys carried out with VIMOS (e.g. VVDS, zCosmos, VUDS, VIPERS, VANDELS). As a result of this long-lasting experience and thanks to the intrinsic adaptability of its design and capabilities, about ten years ago VIPGI was reshuffled into SIPGI, a new pipeline capable of reducing both optical and near-infrared spectroscopic data.
SIPGI has been used by the LBT spectroscopic data reduction center located at INAF-IASF Milan to reduce all the MODS and LUCI spectra acquired during the Italian time in the last ten years. This LBT-customized SIPGI version is now distributed as a stand-alone program.
IMPORTANT NOTE 1 (MODS and LUCI)

IMPORTANT NOTE 2 (MODS only)
A new Archon CCD controller was installed on MODS on 1 September 2025. For observations acquired after this date, SIPGI continues to use the previous GAIN and read-out noise (RON) values. SIPGI will be updated as soon as the corresponding GAIN and RON measurements for the Archon controller become available from LBTO.
If you want to be notified when the values will be available, just leave your email address when downloading SIPGI.
For more information, see the MODS detector characteristics page
For any question, comment, suggestion or for any request of help in the reduction of MODS/LUCI spectra with SIPGI, please contact us at lbt-italia-spec@inaf.it
SIPGI 2.5 (ChangeLog) is available on the DOWNLOAD page
SIPGI documentation is distributed with the code and is available HERE
A set of video tutorials to interactively learn how to use SIPGI is available HERE
SIPGI paper
SIPGI: an interactive pipeline for MODS and LUCI spectroscopic data reduction
A. Gargiulo, M. Fumana, S. Bisogni, P. Franzetti, L. P. CassarĂ , M. Scodeggio, B. Garilli, G. Vietri
MNRAS, 514, 2902 (2022)
SIPGI software DOI
10.20371/inaf/sw/2021_00002