urn:nasa:pds:context:instrument:nis.near 1.1 1.14.0.0 Product_Context 2023-05-12 1.1 Removed extraneous external references, replaced description with a short summary, and added NAIF instrument ID and Type List Area 2016-10-01 1.0 extracted metadata from PDS3 catalog and modified to comply with PDS4 Information Model urn:nasa:pds:context:instrument_host:spacecraft.near instrument_to_instrument_host Izenberg, N.R., K. Peacock, J. Warren, S.L. Murchie, and J.F. Bell III, In-flight calibration of NEAR's near infrared spectrometer, Proceedings of the 1998 SDL/USU Symposium on Infrared Radiometric Sensor Calibration, Space Dynamics Laboratory, Utah State University, Logan, UT, USA, 1998. reference.IZENBERGETAL1998 Peacock, K., Calibration of the Near Infrared Spectrograph, Proceedings of the 1997 SDL/USU Symposium on Infrared Radiometric Sensor Calibration, Space Dynamics Laboratory, Utah State University, Logan, UT, USA, 1997. reference.PEACOCK1997 Warren, J., K. Peacock, E.H. Darlington, S.L. Murchie, S. Oden, J. Hayes, J.F. Bell III, S. Krein, and A. Mastandrea, Near-infrared spectrometer for the Near Earth Asteroid Rendezvous mission, Space Science Review, Vol. 82, pp. 101-167, 1997. reference.WARRENETAL1997 NEAR INFRARED SPECTROMETER Spectrometer -93024, -93023, -93022, -93021 The NIS measured the spectrum of sunlight reflected from Eros in the near-infrared range from 0.8 to 2.6 mm in 64 channels to determine the distribution and abundance of surface minerals like olivine and pyroxene. This grating spectrometer disperses the light from the slit FOV (0.38 x 0.76 deg in its narrow position and 0.76 x 0.76 deg in the wide position) across a pair of passively cooled one-dimensional array detectors, one a germanium array covering the lower wavelengths 0.8 to 1.5 mm and the other an indium/gallium- arsenide array covering 1.3 to 2.6 mm. The slit can be closed for dark current measurement. The NIS has a scan mirror that enables it to view the common boresight direction (within the MSI FOV) or directions more than 90 deg away. Spectral images can be built up by a combination of scan mirror and spacecraft motions. In addition, the NIS has a gold calibration target that can be positioned to scatter sunlight into the instrument and provide a quantitative, in-flight spectral calibration.