Instrument Information
IDENTIFIER urn:nasa:pds:context:instrument:gp.nfr::1.2
NAME Net Flux Radiometer for Galileo Probe
TYPE Radiometer
DESCRIPTION The Galileo Probe Net Flux Radiometer (NFR) measured net and upward radiation fluxes in Jupiter's atmosphere between about 0.44 bars and 14 bars, using five spectral channels to separate solar and thermal components. The instrument used an optical head extending through the probe wall to obtain views of the Jovian atmosphere. It sampled upward and downward radiation fluxes with a single 40 degree (full angle) conical field of view chopped between directions +/- 45 degrees from horizontal. The NFR consists of two major sub-assemblies: the electronics module (EM), and optical head (OH). The electronics module is about 13 cm x 19.5 cm x 16 cm high, while the optical head is about 8.5 cm x 8 cm high x 10.5 cm long. The total weight of the NFR is 3.134 kg, of which the optical head is 0.672 kg. The electronics module has four feet which are bolted to the Probe instrument shelf. The optical head, supported only by its attachment to the electronics module, extends out of the Probe through the Probe thermal blanket and aeroshell to allow the NFR sensors to view atmospheric radiation.
MODEL IDENTIFIER
NAIF INSTRUMENT IDENTIFIER
SERIAL NUMBER not applicable
REFERENCES Sromovsky, L.A. and P.M. Fry, Calibration of the Galileo Net Flux Radiometer, Proceedings of the Fourth SDL/USU Infrared Sensor Calibration Symposium, Utah State University, 1994.

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Sromovsky, L.A., F.A. Best, H.E. Revercomb, and J.L. Hayden, Galileo Net Flux Radiometer Experiment, Space Sci. Rev. 60, pp. 233-262, 1992.

Sromovsky, L.A., A.D. Collard, P.M. Fry, G.S. Orton, M.T. Lemmon, M.G. Tomasko, and R.S. Freedman, Galileo Probe Measurements of Thermal and Solar Radiation Fluxes in the Jovian Atmosphere, Submitted to J. Geophys. Res., 1998.