STELLA Spectrometer Data Comparisons
Data collected on ideal full sun days from multiple STELLA spectrometers. Convert the data to reflectance and see how the readings compare!
![Dry Yellowing Grass and Brown Leaves construction paper comparison 9/3/2023 Dry Yellowing Grass and Brown Leaves construction paper comparison 9/3/2023](https://landsat.gsfc.nasa.gov/wp-content/uploads/elementor/thumbs/DryYellowingGrass_BrownLeaves_conpaper_Comparison_9_3_2023-scaled-qbvsoy3g3bpdlwwd6fl0plhth2w6e2f4okc31u9c9g.jpg)
Dry Grass and Leaves / Yellow, Orange, Brown Paper
Included in ZIP file: Construction paper color swatches, dry grass and leaves and calibration data collected at 20 centimeters using STELLA 1.0 and 1.1 sample and average .csv files containing irradiance data from 450~860nm
![Asphalt Black comparison 9_3_2023 Asphalt Black paper comparison 9_3_2023](https://landsat.gsfc.nasa.gov/wp-content/uploads/elementor/thumbs/Asphalt_Black_comparison_9_3_2023-scaled-qbvt55t7zfwfvrchhxwc8072dcz463sfwtgm2o7uxg.jpg)
Asphalt / Black Paper
Included in ZIP file: Black construction paper, asphalt and calibration data collected at 20 centimeters using STELLA 1.0 and 1.1 sample and average .csv files containing irradiance data from 450~860nm
![BaldGroundBrownLeaves_BrownOrange_comparison_9_3_2023 BaldGroundBrownLeaves_BrownOrange_comparison_9_3_2023](https://landsat.gsfc.nasa.gov/wp-content/uploads/elementor/thumbs/BaldGroundBrownLeaves_BrownOrange_comparison_9_3_2023-scaled-qbvt90xc2x6vm1qexm14h13aadxftb4pry0h3mhlck.jpg)
Bare Ground and Brown Leaves / Orange, Brown Paper
Included in ZIP file: Orange and brown construction paper, bare ground with brown leaves and calibration data collected at 20 centimeters using STELLA 1.0 and 1.1 sample and average .csv files containing irradiance data from 450~860nm
![Green grass and green construction paper comparison 9/3/2023 Green grass and green construction paper comparison 9/3/2023](https://landsat.gsfc.nasa.gov/wp-content/uploads/elementor/thumbs/Grass_Green_comparison_9_3_2023-scaled-qbvszwvntqpt24yx568bstveywuc6xye6uc0m1zzo4.jpg)
Green Grass / Green Paper
Included in ZIP file: Green construction paper swatch, green grass and calibration data collected at 20 centimeters using STELLA 1.0 and 1.1 sample and average .csv files containing irradiance data from 450~860nm
![Grass_Time_comparison_Aug31_vs_Sep1_2023 Grass Time comparison Aug31_vs_Sep1_2023](https://landsat.gsfc.nasa.gov/wp-content/uploads/elementor/thumbs/Grass_Time_comparison_Aug31_vs_Sep1_2023-scaled-qbvusm3q97ac7uzlc51ufi3mzpxw0wt932x7tq2fdg.jpg)
Green Grass August 31, 2023 / September 1, 2023
Included in ZIP file: Green grass and calibration data collected at 1 meter from August 31 and September 1, 2023 using STELLA 1.0 and 1.1 sample and average .csv files containing irradiance data from 450~860nm