 |
 |
 |
 |
 |
 |
 |
This page provides access to the near-infrared spectral data obtained by Hayabusa NIRS. NIRS is a grating infrared spectrometer, in which light is directed by a grism onto a 64-channel InGaAs photodiode array detector. A shutter can be chopped for dark current measurement and two calibration lamps are carried to monitor the response level of detector.
NIRS spectral data are archived in FITS format consisting headers and binary tables. In the FITS headers the status packet data and some incremental information are listed. The FITS data set are packed as a compressed tarball with respect to each observation date.
- FITS Binary Table Notes -
| Array | Unit |
| NAXIS1 - Channel Number (1-64) NAXIS2 - 1: Average 2: Deviation 3: Maximum 4: Minimum |
Level 1 - Voltage Level 2 - Standard reflectance unit I/F. |
The NIRS calibration procedure uses the ASCII table files (NIRS_VOL2RAD_PLS.TAB for point light source and NIRS_VOL2RAD_ALS.TAB for area light source) to convert from raw NIRS output (Voltage) to radiance and the file (NIRS_SOLAR_SPC.tab) to convert to I/F. To download all these files, click on here.
If the view list button is clicked on after setting the data level and observation target through the following select boxes, a list of the specified data will appear below. Please fill the check boxes of data that you want and click on the download button.
