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SPIRE Photometer Beam ProfilesSummary of beam profile analysis and solid angle revision ( Bernhard Schulz, September 2012) | |||||||||
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< < | The values in the first line were measured from a very finely sampled observation of Neptune as outlined below. Note that these are only accurate for a source of the same spectral shape. Since SPIRE flux densities for point sources are conventionally quoted for the reference wavelengths 250, 350, and 500 microns, assuming a source spectrum rising proportionally to wavelength (nu*F_nu=const.), we can adopt the same convention for (infinitely) extended sources. In this case the values in the second line apply. For sources of other colors a correction will have to be applied. The radial model beam profile described in a technical document by North, Griffin, Amaral-Rogers 2011 (v2.6)![]() | ||||||||
> > | The values in the first line were measured from a very finely sampled observation of Neptune as outlined below. Note that these are only accurate for a source of the same spectral shape. Since SPIRE flux densities for point sources are conventionally quoted for the reference wavelengths 250, 350, and 500 microns, assuming a source spectrum rising proportionally to wavelength (nu*F_nu=const.), we can adopt the same convention for (infinitely) extended sources. In this case the values in the second line apply. For sources of other colors a correction will have to be applied. The radial model beam profile is described in Griffin et al. 2013![]() | ||||||||
Normalized Beam Profile Products to Download | |||||||||
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Datasets to construct the radial beam profile model are available below. These allow to take into account the color dependent FWHM of the true beam profiles. | |||||||||
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< < | The radial beam profile model for SPIRE was developed and described by North, Griffin, Amaral-Rogers 2011 (v2.6)![]() | ||||||||
> > | The radial beam profile model for SPIRE was developed and described by Griffin et al. 2013![]() | ||||||||
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