Status of Synoptic Optical Long-term Investigation of the Sun (SOLIS) Project.

Synoptic Optical Long-term Investigation of the Sun (SOLIS) is a suite of three instruments to study various aspects of solar activity. Vector Stokes Magnetograph (VSM) takes full disk longitudinal magnetograms in the photosphere (Fe I 6301 A-6302 A) and the chromosphere (Ca II 8542A), the photospheric vector magnetograms, and the full disk images of equivalent width for He I 10830A. The VSM data set goes back to August 2003. Integrated Sunlight Spectrometer (ISS) provides high-resolution spectra of sun-as-a-star for nine selected spectral bands (starting from December 2006). Full-Disk Patrol (FDP) observes full disk images of the Sun at high cadence in several selected wavelengths (starting from June 2011). In the last two years, the SOLIS instruments and data reduction went through a series of upgrades resulting in higher data quality. These upgrades include new CCD cameras, photo guider, and improved magbias calculations and data reduction of ISS line profiles. We will present the current status of SOLIS, and show the comparison between SOLIS observations with other instruments.