SOLIS-VSM Synoptic Products


Since August 2003, the Vector Spectromagnetograph (VSM) instrument has recorded full-disk photospheric and chromospheric magnetograms along with He I 1083 nm spectroheliograms daily as part of the Synoptic Optical Long-term Investigations of the Sun (SOLIS) project. In addition, the VSM measured full-disk photospheric vector magnetograms weekly. After the full deployment of the VSM data processing system, a typical observing day will include three full-disk photospheric vector magnetograms. Products from observations for the past year and half are expected to become available during the year 2005, these include Dopplergrams, equivalent width and line depth images. Besides individual full- disk images, several derived products are also or soon will be available via the SOLIS web site. These products include integrated full-disk magnetogram and helium spectroheliogram time series. Additionally, Carrington rotation and daily synoptic maps are now available from the photospheric magnetograms. Daily coronal hole estimate images using VSM data, along with the creation of solar wind source maps will also be available. The VSM synoptic products are available on the NSO- SOLIS web site cooperatively by NSF/NSO and NASA/GSFC. The National Solar Observatory is operated by AURA, Inc. under a cooperative agreement with the National Science Foundation.

AGU Spring Meeting Abstracts