SOLIS Vector Spectromagnetograph: status and science

TL;DR

The SOLIS Vector Spectromagnetograph has been providing daily photospheric and chromospheric magnetograms since 2003, with increasing data accessibility and upcoming advanced inversion data for solar magnetic field research.

Contribution

This paper reports on the operational status, data products, and scientific capabilities of the SOLIS VSM instrument, highlighting its long-term data collection and public availability.

Findings

Daily magnetogram data since 2003

Public access to quick-look magnetic images

Upcoming availability of inversion parameter data

Abstract

The Vector Spectromagnetograph (VSM) instrument has been recording photospheric and chromospheric magnetograms daily since August 2003. Full-disk photospheric vector magnetograms are observed at least weekly and, since November 2006, area-scans of active regions daily. Quick-look vector magnetic images, plus X3D and FITS formated files, are now publicly available daily. In the near future, Milne-Eddington inversion parameter data will also be available and a typical observing day will include three full-disk photospheric vector magnetograms. Besides full-disk observations, the VSM is capable of high temporal cadence area-scans of both the photosphere and chromosphere. Carrington rotation and daily synoptic maps are also available from the photospheric magnetograms and coronal hole estimate images.