Gaia Data Release 2
Free Access

Table 5

Summary of useful RVS parameters.

Exposure 4.4167 s
Typical number 41, each over 3 CCDs
of transits
Image scale 169.7 μm arcsec−1 nominal
Pixel scale along scan 10 μm
0.0589 arcsec nominal
across scan 30 μm
0.1767 arcsec nominal
Window size along scan 1260 pix until 2015 June
12 macrosamples of 105 pix
1296 pix after 2015 June
12 macrosamples of 108 pix
across scan 10 pix except in overlaps
Wavelength range 845.0–872.5 nm (FWHM)
845.5–872.0 nm (at 90%)
Mean dispersion at 847nm 0.0244 nm pix−1
8.51 km s−1 pix−1
at 873nm 0.0246 nm pix−1
8.58 km s−1 pix−1
Telescope 1, Row 4 bottom 0.02440 nm pix−1
Row 7 top 0.02460 nm pix−1
Telescope 2, Row 4 bottom 0.02438 nm pix−1
Row 7 top 0.02461 nm pix−1
Digitisation 0.539–0.595 e (dig. unit)−1

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