Planck early results
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Table 1

Simulation of the reconstruction of the beams and focal plane geometry from observations of Jupiter, including realistic models of the beams, instrument noise, beam smearing, and star tracker uncertainties.

δ
Parameter Input Reconstruction [%]

LFI19S–70GHz
FWHM................................. 1283 1297 1.12
ellipticity............................ 1.280 1.276 0.98
x0 .............................. -28715 -28704 0.36
y0 .............................. -15678 -15829 0.96
LFI25S–44GHz
FWHM.................................. 2933 3023 3.07
ellipticity.............................. 1.170 1.230 5.12
x0 ................................ -28227 -28293 0.23
y0 ................................ -51369 -50844 1.02
LFI27M–30GHz
FWHM.................................. 3242 3289 1.45
ellipticity.............................. 1.380 1.384 0.32
x0 ................................ 24903 22958 0.02
y0 ................................  24903  23958 3.79

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