2.7.2 spase://NOAA/Instrument/GOES/8/SEM/XRS NOAA Instrument GOES-8 Solar X-ray Sensor (XRS) XRS 2019-05-05T12:34:56Z 2026-10-10T00:08:46Z Migrated the instrument record from the SMWG Naming Authority to NOAA, changing the ResourceID from spase://SMWG/Instrument/GOES/8/SXM to spase://NOAA/Instrument/GOES/8/SEM/XRS. Renamed the instrument from Solar X-ray Monitor (SXM) to Solar X-ray Sensor (XRS). Updated the ResourceName, Description, GeneralContact, InformationURL entries, and InvestigationName. Changed InstrumentType from Unspecified to IonChamber. Added AlternateName, ObservedRegion, and MeasurementType metadata. Retained the former ResourceID as PriorID. Upgraded the record from SPASE 2.2.0 to 2.7.2. The X-Ray Sensor (XRS) was part of the Space Environment Monitor (SEM) instrument suite on the GOES-8 spacecraft. XRS measured the full-disk solar soft X-ray irradiance in two channels, XRS-A and XRS-B. The commonly used science-quality wavelength bands are 0.05-0.4 nm (XRS-A) and 0.1-0.8 nm (XRS-B); historical GOES-3 through GOES-12 operational XRS-A data used a different bandpass convention (0.05-0.3 nm). These bandpass conventions should not be confused with the detector's spectral response. The instrument used gas-filled ionization chambers, one for each X-ray channel, with spectral responses determined by the filters and detector characteristics. Unlike the GOES-R series XRS instruments, which use silicon photodiodes, the GOES-8 XRS had one detector per channel and did not provide solar flare location measurements. XRS observations supported monitoring and characterization of solar flares. GOES-8 through GOES-15 operational XRS irradiances used historical scaling factors for continuity with earlier GOES measurements; these factors were removed from the science-quality reprocessed data. Users comparing GOES-8 measurements with other generations should account for bandpass conventions and calibration differences. spase://SMWG/Person/NOAA.NCEI.Irradiance GeneralContact NOAA NCEI GOES 1-15 Space Weather Instruments https://www.ncei.noaa.gov/products/goes-1-15/space-weather-instruments NOAA overview of the SEM suite, XRS measurements, available data, and documentation. GOES 8-15 XRS Science-Quality Data ReadMe https://data.ngdc.noaa.gov/instruments/solar-space-observing/particle-detectors/sem/goes/access/science/xrs/GOES_1-15_XRS_Science-Quality_Data_Readme.pdf NOAA documentation of GOES-8 through GOES-15 XRS measurements, instrument characteristics, calibration, and science-quality data processing. GOES X-ray Sensor (XRS) Operational Data ReadMe https://archive.data.noaa.gov/satellite-spaceweather/GOES1-15/docs/goes_operational_data/GOES_XRS_readme.pdf NOAA documentation of GOES-1 through GOES-15 operational XRS data, historical bandpass conventions, and scaling corrections. spase://SMWG/Instrument/GOES/8/SXM IonChamber Solar X-ray Sensor on GOES-8 spase://SMWG/Observatory/GOES/8 Sun Sun.Corona Irradiance