New improvements in the measurement of both the optical solar spectrum
and laboratory wavelengths for lines of neutral iron are combined to
extract central wavelength shifts for 1446 lines observed in the Sun.
This provides the largest available database of accurate solar wavelen
gths useful as a reference for comparison with other solar-type stars.
It is shown how the velocity shifts correlate with line strength, app
roaching a constant value, close to zero, for lines with equivalent wi
dths larger than 200 m Angstrom.