Data description & calibration | Summary Movies | Data Thumbnails and Files |
EIS takes full-disk mosaics every 3-4 weeks using the 40" slit (slot). This Hinode Observing Program (HOP130) started in 2009.
To browse the datasets, we recommend visualizing first the Summary Movies. Data files can be downloaded from the table of Data Thumbnails and Files. |
Data files can be downloaded from the table of Data file links. Follow the instructions below to read the HDF files, convert to IDL maps and plot. The data structure contains one mosaic image for every spectral window. Mosaic images are 2500x3000 pixels and are made by combining individual EIS rasters. AIA images scaled to the EIS pixel scale are used as the skeleton to build the mosaic. Each 195Å EIS raster is cross-correlated with a simultaneous AIA 193Å image that sets the reference frame. When two EIS rasters overlap on a pixel, the mosaic retains the average counts. As EIS takes several hours to complete the observation, the EIS mosaics cannot be matched to a single AIA image. The times for all 26 rasters are provided. The diagram at the top of the page shows the raster sequence to build the mosaic: 1T (raster 1), 1B (2), 2T (3), 2B (4)... 15B (26). Slot rasters are initially processed with the standard EIS_PREP.PRO routine, including subtraction of constant dark current levels. For this dataset, the slot rasters are additionally substracted for an excess of dark current that has been observed to grow with the mission lifetimes. Data is provided as Data Numbers (DN) with no correction for sensitivity decay with time. That correction can be applied using: EIS_RECALIBRATE_INTENSITY.PRO. The data structure contains factors to convert the DN to Photons or ERGS. This is a Beta product. The paper Young & Ugarte-Urra (2022) discusses the accuracy of the slot intensities in a general context and "provides prescriptions for deriving accurate slot intensities". To read the H5 data files in IDL, use the routine EIS_RESTORE_HDF.PRO. The routine is not yet in SSW, but can be donwloaded here. IDL> eis_restore_hdf,data=data,file='eis_fd_slot_20230110_m01.h5' IDL> help,data RASTERS STRUCT -> The data can be manipulated by accessing the INT tag in the data structure. To make plots or compare to other instrument images, the mosaics can be converted to IDL maps using the routine EIS_MK_FULLSUN_MAP.PRO. The routine is not yet in SSW, but can be donwloaded here. Follow this link to learn more about IDL maps: "IDL Map Software for Analyzing Solar Images". IDL> window = 2 IDL> eis_map = eis_mk_fulldisk_map(data,window) IDL> help, eis_map DATA FLOAT Array[2500, 3000] XC DOUBLE 0.0000000 YC DOUBLE -49.500000 DX DOUBLE 0.98600000 DY DOUBLE 0.99000001 TIME STRING '10-Jan-2023 11:05:27.000' ID STRING 'EIS Fe XII 195.120' DUR FLOAT 12673.0 XUNITS STRING 'arcsec' YUNITS STRING 'arcsec' ROLL_ANGLE DOUBLE 0.0000000 ROLL_CENTER DOUBLE Array[2] B0 DOUBLE -4.0303963 RSUN DOUBLE 975.15379 IDL> window,0,xs=800,ys=500 IDL> !p.multi=[0,2,1] IDL> plot_map, eis_map, /log IDL> plot_map, eis_map, /log, xr=[-600,0],yr=[-500,100],dmin=100.,dmax=15000. IDL> !p.multi=0 |
SUMMARY | He II 256.3 | Si VII 275.4 | Fe XI 180.4 | Fe XII 195.1 | Fe XIII 202.0 | Fe XIII 203.8 | Fe XV 284.2 | Fe XVI 263.0 | Composite |
Short list , Extended | He II 256.3 | Si VII 275.4 | Fe XI 180.4 | Fe XII 195.1 | Fe XIII 202.0 | Fe XIII 203.8 | Fe XV 284.2 | Fe XVI 263.0 | Part |