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PDS Geosciences Node, Washington University in St. Louis
Geosciences Node Data
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May 12, 2017. MESSENGER Release 16 includes several new MASCS products as well as revisions to previously released products. A VIRS tutorial is also provided in the Document directory of the derived data volume, and is listed below under Related Information. See the ERRATA.TXT file in the top-level directory of MASCS volume MESSMAS_2101 for details about this release and previous releases.  

The new and revised products in this release are provided on a new archive volume, MESSMAS_2101. The revisions are due to calibration and data processing improvements; however, the previous versions of the products will remain available on volume MESSMAS_2001. See below for links to both volumes.

The VIRS DDRs on the previously released volume, MESSMAS_2001, contained an error in the data which was reported on August 16, 2016 (see ERRATA.TXT on MESSMAS_2001). With this release, the DDRs on that volume have been revised to correct the error.  

The MASCS Readers (IDL procedures) have also been updated for this release.

MASCS is the Mercury Atmospheric and Surface Composition Spectrometer instrument on MESSENGER. The data sets are produced by the MASCS Science Team at Johns Hopkins University Applied Physics Laboratory, Laurel, Maryland.

MASCS has two subsystems, UVVS (Ultraviolet and Visible Spectrometer) and VIRS (Visible and Infrared Spectrograph). UVVS data are archived by the PDS Atmospheres Node, and VIRS data are archived by the PDS Geosciences Node. Both data sets are stored on the same archive volume, available from both nodes.

MASCS Data Sets (PDS3)

Raw Data Products
UVVS and VIRS EDRs - MASCS Ultraviolet/Visible Spectrometer and Visible/Infrared Spectrograph Experiment Data Records
Derived Data Products
UVVS and VIRS CDRs and DDRs, version 2 (MESSMAS_2101) - MASCS Ultraviolet/Visible Spectrometer and Visible/Infrared Spectrograph Calibrated Data Records and Derived Data Records, new and revised products for the final MESSENGER release, covering the entire mission. See ERRATA.TXT for details.

UVVS and VIRS CDRs and DDRs, version 1 (MESSMAS_2001) - the previous CDR/DDR volume remains available. See ERRATA.TXT on this volume for details.


Mercury Orbital Data Explorer - Provides search, display, and download  tools for this data set.
  Mercury Footprint Coverage Explorer - Part of the Mercury ODE, this page links to product coverage maps in Google Earth and other formats.
  MESSENGER QuickMap - This simple, interactive map interface used by the MESSENGER science team is now available to the public.
  MASCS CDR and DDR Readers - The MASCS Team has provided IDL functions to read CDR and DDR data files into an IDL array of data structures.

Related Information

MASCS VIRS Tutorial (PDF, 36 MB)

MASCS UVVS + VIRS Combined Derived Data Record Specification (PDF, 399 KB)

MASCS UVVS CDR to Surface DDR Procedures (ASCII Text, 561 KB)

MASCS UVVS-VIRS DDR to Combined DDR Procedures (ASCII Text, 29 KB)

MASCS UVVS Processing Updates - PDS 16 (PDF, 424 KB)

MASCS VIRS Lamp-Based Flat Field Report (PDF, 839 KB)

MASCS UVVS EDR Software Interface Specification (PDF, 287 KB)

MASCS UVVS CDR / DDR Software Interface Specification (PDF, 1 MB)

MASCS UVVS EDR to CDR and CDR to DDR calibration documents

MASCS VIRS EDR Software Interface Specification (PDF, 286 KB)

MASCS VIRS CDR / DDR / DAP Software Interface Specification (PDF, 1 MB)

 MASCS VIRS EDR to CDR and CDR to DDR calibration documents

 MASCS Calibration Report (PDF, 1,389 KB)

MASCS VIRS Dark Analysis Report 1 (PDF, 3,393 KB) and Report 2 (PDF, 80 KB)



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