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— Eric Hivon 2017/10/18 10:22

• Scanning strategy generated with TOAST with the parameters (adapted from Ranajoy's post):
  • precession: 22 deg, 11.75hours
  • spin: 61 deg, 2mn
  • duration and sampling rate: 366 days, 85Hz

• Focal plane simulation (with QuickPol: Hivon, Mottet & Ponthieu, 2017, A&A 598, A25 and an introduction to QuickPol (PDF)):
  • 8 Planck-like beams of FWHM = 7.68
    • nominal: 8 detectors rotated by (0,-90) or (-45,45deg) wrt the scan direction
    • MonteCarlo simulations: same as above with random error on each orientation angle
      (Gaussian distribution of mean 0 and rms = 1deg)

• CMB only, no noise, no foreground, no mask

In the plot below, are shown the leaked power spectra seen when auto-correlating the map obtained when combining the 8 detectors, with either the nominal orientations or the MC error ones.

• Green long dashes: nominal,
• colored shorter dashed: first 4 simulations,
• short gray dashes: next 6 simulations,
• black dots: fraction of the input power spectrum.

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