ROI calibration data - collected at Cripple Creek Victor mine, Cripple Creek, Colorado, 2017
HySpex by NEO VNIR-1800 and SWIR-384 imaging spectrometer radiance and reflectance data, with associated ASD FieldSpecⓇ NG calibration data, collected at Cripple Creek Victor mine, Cripple Creek, Colorado, 2017
Dates
Publication Date
2022-12-15
Start Date
2017
End Date
2017
Citation
Meyer, J.M., Kokaly, R., Hoefen, T.M., Graham, G.E., and Kelley, K.D., 2022, HySpex by NEO VNIR-1800 and SWIR-384 imaging spectrometer radiance and reflectance data, with associated ASD FieldSpecⓇ NG calibration data, collected at Cripple Creek Victor mine, Cripple Creek, Colorado, 2017: U.S. Geological Survey data release, https://doi.org/10.5066/P92VF8HP.
Summary
HySpex by NEO (HySpex) VNIR-1800 and SWIR-384 imaging spectrometer radiance data were acquired on September 14, 2017 at the Cresson Pit of the Cripple Creek & Victor mine in Cripple Creek, Colorado. ASD FieldSpecⓇ NG data were collected on September 13 and 14, 2017 at two calibration sites within the Cresson Pit imaged with the HySpex imaging spectrometers. The HySpex VNIR-1800 imaging spectrometer is a push broom type instrument that utilizes 1800 pixels to collect 186 channels of spectral data in the region of 400 to 1000 nanometers (nm). The spectral sampling interval of the HySpex VNIR-1800 is 3.26 nm with a 17° field of view (Norsk Elektro Optikk AS, 2016b). The HySpex SWIR-384 imagining spectrometer is a push broom type instrument [...]
Imaging spectrometer data were collected by mounting the HySpex VNIR-1800 and SWIR-384 imaging spectrometers on a rotating stage at the southeast portion of the Cresson Pit. The distance from the imaging spectrometers to areas imaged on the opposite side of the pit ranged from approximately 300 to 1500 m. This resulted in a pixel size of 4.7 to 23.4 cm for the VNIR data and 22 to 110 cm for the SWIR data.
ASD FieldSpecⓇ NG spectra from each calibration site were spectrally averaged, converted to absolute reflectance, and convolved to the bandpass and sampling interval of the HySpex data. HySpex radiance spectra from regions of interest that encompassed the calibration sites were also spectrally averaged. Multipliers were generated by dividing the averaged and convolved ASD FieldSpecⓇ NG calibration site absolute reflectance data with the averaged HySpex radiance data encompassing the calibration sites. HySpex reflectance data cubes were generated by applying the multipliers to the HySpex radiance data cubes. The resultant reflectance cubes were then combined to create the reflectance mosaic. White mica wavelength position maps were generated using routines in the U.S. Geological Survey PRISM version1aq software suite (Kokaly, 2011).
References Cited:
Kokaly, R.F., 2011, PRISM: Processing routines in IDL for spectroscopic measurements (installation manual and user's guide, version 1.0): U.S. Geological Survey Open-File Report 2011-1155, 432 p., https://doi.org/10.3133/ofr20111155.
Malvern Panalytical, 2018, ASD FieldSpec 4 Hi-Res NG Spectroradiometer, accessed December 1, 2018 at https://www.malvernpanalytical.com/en/products/product-range/asd-range/fieldspec-range/fieldspec-4-hi-res-ng-spectroradiometer/.
Norsk Elektro Optikk AS, 2016a, HySpex SWIR-384, accessed June 1, 2017 at http://www.hyspex.no/products/.
Norsk Elektro Optikk AS, 2016b, HySpex VNIR-1800, accessed June 1, 2017 at http://www.hyspex.no/downloads/.
Click on title to download individual files attached to this item.
CalibrationROI.xml Original FGDC Metadata
View
25.54 KB
application/fgdc+xml
calibration_site1_SWIR.csv
256.35 KB
text/csv
calibration_site1_VNIR.csv
3.87 MB
text/csv
calibration_site2_SWIR.csv
264.65 KB
text/csv
calibration_site2_VNIR.csv
5.55 MB
text/csv
Related External Resources
Type: Related Primary Publication
Meyer, J.M., Kokaly, R.F., and Holley, E., 2022, Hyperspectral remote sensing of white mica: A review of imaging and point-based spectrometer studies for mineral resources, with spectrometer design considerations: Remote Sensing of Environment, v. 275, p. 113000, https://doi.org/10.1016/j.rse.2022.113000.
HySpex by NEO VNIR-1800 and SWIR-384 imaging spectrometer radiance data. HySpex data were collected as one component of a USGS mineral resource project with the goals of enhancing geologic mapping and developing methods to identify and characterize mineral deposits through the use of imaging spectroscopy. ASD FieldSpecⓇ NG data. The ASD data were collected to verify the HySpex data and to be used to convert the HySpex radiance data to reflection data. Techniques and skills developed are applicable elsewhere. The data contained in this data release is associated with the following publication: Hyperspectral remote sensing of white mica: A review of imaging and point-based spectrometer studies for mineral resources, with spectrometer design considerations (Meyer, Kokaly, Holley, 2022).
Reference Cited:
Meyer, J.M., Kokaly, R.F., and Holley, E. (2022). Hyperspectral remote sensing of white mica: A review of imaging and point-based spectrometer studies for mineral resources, with spectrometer design considerations: Remote Sensing of Environment, 275, https://doi.org/10.1016/j.rse.2022.113000.
Revision by John Meyer on July 10, 2023. The names of the instruments used to collect these data were modified to reflect the preferred naming conventions of the manufacturers.