2.7.1 https://spdx.org/licenses/ SPDX https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions spase://NASA/NumericalData/IRIS/Level_1/PT1S NASA NumericalData Interface Region Imaging Spectrograph (IRIS) Level 1 Data https://doi.org/10.48322/gdjv-sn12 2025-12-04T13:29:37Z 2022-12-13T00:08:46Z Only known prior ReleaseDate of the metadata 2022-12-13T12:34:56.789Z Created by SY, reviewed by LFB 2025-05-14T15:38:11Z Added ObservedRegion. JMW 2025-09-18T11:27:06Z Added ResourceType and NamingAuthority. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. Matched version number in schemaLocation attribute to updated value in Version tag. ZCB 2025-11-14T16:01:53Z Added PublicationInfo. ZCB 2025-12-04T13:29:37Z Added MetadataRightsList. Updated to 2.7.1. ZCB 2026-04-09T00:08:46 Updated ResourceID; Added AccessInformation (SDAC); Updated PublicationInfo This data set contains Level 1 images and spectra from the Interface Region Imaging Spectrograph (IRIS). RIRIS records spectra in the near-ultraviolet band (NUV) from 278.3 nm to 283.4 nm and in the far-ultraviolet bands from 133.2 nm to 135.8 nm (FUV 1) and 138.9 nm to 140.7 nm (FUV 2). The spectra are obtained every 0.5 s to 60 s along a slit (1/3" wide). IRIS detects solar material at temperatures from 5,000 K to 10 million K. IRIS slit-jaw images (SJI) are taken every 0.5 s to 60 s using filters centered at Mg II k 279.6 nm (SJI 2796), the far Mg II h wing at 283.2 nm (SJI 2832), C II at 133 nm (SJI 1330), and Si IV at 140 nm (SJI 1400). In this way, IRIS provides images of solar features as small as 240 km (150 miles) and allows inference of how much material is present at specific velocities, temperatures and densities. These data can then be used to probe the photosphere, the chromosphere, and the transition region and thus to study energetic and dynamic properties of material throughout the solar atmosphere. The Level 1 data are derived from Level 0 files and is used to create the Standard Science Product (science-ready Level 2 data). The Level 1 data is identical to level 0 data except that it is rotated and flipped so that north is up in the images and the wavelength and x coordinate increase to right. This data level product consists of series for FUV1, FUV2, and NUV spectral data, and slit-jaw images with appropriate Level 1 keywords. IRIS is a NASA small Explorer mission developed and operated by LMSAL with mission operations executed at NASA Ames Research center and major contributions to downlink communications by ESA and the Norwegian Space Agency (NOSA). Pontieu, Bart, De 2013-10-23T00:00:00Z Stanford University spase://SMWG/Person/Bart.De.Pontieu PrincipalInvestigator IRIS Mission, Operations, Data, Analysis, and Documents https://iris.lmsal.com/index.html At the IRIS LMSAL site IRIS Data User's Guide https://iris.lmsal.com/itn26/itn26.pdf IRIS Data User's Guide Definition of IRIS Data Levels https://www.lmsal.com/iris_science/doc?cmd=dcur&proj_num=IS0076&file_type=pdf Definition of IRIS Data Levels IRIS Level 1 Data Download Instructions https://www.lmsal.com/iris_science/doc?cmd=dcur&proj_num=IS0649&file_type=pdf IRIS Level 1 data download instructions and examples IRIS Today Graphical Interface https://iris.lmsal.com/iristoday/ Select IRIS data from today or past dates Recent IRIS Observations https://www.lmsal.com/hek/hcr?cmd=view-recent-events&instrument=iris Recent IRIS Observations Planned Observations for IRIS https://www.lmsal.com/hek/hcr?cmd=view-planned-events&instrument=iris Planned Observations for IRIS spase://NASA/NumericalData/IRIS/L1/PT1S spase://SMWG/Repository/Stanford/HMI-AIA.JSOC Online Open JSOC Data Export http://jsoc.stanford.edu/ajax/exportdata.html?ds=iris.lev1[2020-01-01T00:00:00/60m][] FITS spase://SMWG/Repository/SDAC Online Open https://spdx.org/licenses/ SPDX CC0-1.0 https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products The IRIS Data Archive at SDAC https://umbra.nascom.nasa.gov/iris/iris_data/level1/ FITS Uncalibrated spase://SMWG/Instrument/IRIS/IRIS ImageIntensity Spectrum 2013-07-23T00:00:00.000Z -P30D Sun.Chromosphere Sun.TransitionRegion