This site provides an interface to Goddard's Planetary Spectrum Generator (PSG), which can be used to generate high-resolution spectra of planetary bodies (e.g., planets, moons, comets, exoplanets). The spectroscopic suite can be also accessed remotely via the Application Program Interface (API). When requiring help on a specific input parameter, please click on the Help icon.

Calculation template Help
Target and geometry HelpTarget: Earth for date (2016/05/30 19:15 UT); geometry: LookingSolar from 0.12 km.
Atmosphere and surface HelpSurface pressure: 9.9688e-01 bar; Molecular weight: 28.97 g/mol; Atmospheric profile: Earth at 119 m, NASA/MERRA2 2016/05/30; Gases: H2O,CO2,CH4; Surface temperature: 287.5700 K; Albedo: 0.3000; Emissivity: 0.7000;
Instrument parameters HelpWavelength range 1.640147-1.640546 um with a resolution of 3.0000e-06 um. Molecular radiative-transfer enabled; Continuum flux module enabled;


Instrument parameters

Telescope / instrument Help  
Frequency/wavelength range:    Resolution:
Include atmospheric signatures Help      Include continuum fluxes     Integrate stellar templates
Terrestrial transmittance Help  Apply    Multiply   Altitude/Water:
Radiation units: Help    Log plot
Telescope Help Beam [FWHM]:     Exozodi level:
Diameter [m, effective]:    Telescopes:  
Noise Help Time / exposure [s]:   Number of exposures:   Number of pixels:
NETD[mK]:   Speed[Hz]:   ηTotal, εopt, Topt[K]