Planck 2013 results
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Table 4

Statistics of effective beam parameters: FWHM, ellipticity, and solid angle.

FWHMa Ω
Band [arcmin] Ellipticity [arcmin2]

30 ...... 32.239 ± 0.013 1.320 ± 0.031 1189.51 ± 0.84
44 ...... 27.01 ± 0.55 1.034 ± 0.033 833 ± 32
70 ...... 13.252 ± 0.033 1.223 ± 0.026 200.7 ± 1.0
100 ...... 9.651 ± 0.014 1.186 ± 0.023 105.778 ± 0.311
143 ...... 7.248 ± 0.015 1.036 ± 0.009 59.954 ± 0.246
217 ...... 4.990 ± 0.025 1.177 ± 0.030 28.447 ± 0.271
353 ...... 4.818 ± 0.024 1.147 ± 0.028 26.714 ± 0.250
545 ...... 4.682 ± 0.044 1.161 ± 0.036 26.535 ± 0.339
857 ...... 4.325 ± 0.055 1.393 ± 0.076 24.244 ± 0.193

Notes.

(a)

Mean of best-fit Gaussians to the effective beams.

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