Gaia Data Release 1
Open Access

Table A.1

Number of parameters of different kinds in the geometric calibration model used for Gaia DR1.

Kind of Multiplicity Total
parameter l f n g b w j/k number

3 2 62 1 1 1 141 52 452
1 2 62 1 1 1 141 17 484
3 2 62 9 1 1 1 3348
2 2 62 1 9 1 1 2232
3 2 62 1 1 3 1 1116

3 2 62 1 1 1 87 32 364
1 2 62 1 1 1 87 10 788
3 2 62 9 1 1 1 3348

Notes. The columns headed Multiplicity give the number of distinct values for each dependency: polynomial degree (l), field index (f), CCD index (n), gate (g), stitch block (b), window class (w), and time interval (j or k). The last column is the product of multiplicities, equal to the number of calibration parameters of the kind.

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