Gaia Data Release 1
Open Access

Fig. E.3

image

Differences in parallax between the baseline primary solution (where basic-angle variations are corrected based on BAM data) and a special validation solution where the harmonic coefficients Ck,0, Sk,0 (except C1,0) were instead estimated as global parameters in the solution. Median differences are shown in cells of about 0.84 deg2. The map uses an Aitoff projection in equatorial (ICRS) coordinates, with origin α = δ = 0 at the centre and α increasing from right to left.

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