Solar surface observations by using VHIRES

[Christian Buil]

Spectra taken in Na D1-D2 and Halpha spectral region of solar
disk (photosphere, spot, He I emssion, ...):

http://www.astrosurf.com/buil/vhires/sun.htm

Example of solar 27 days rotation detection.

Two spectra taken in opposite side of sun disk:



and corresponding spectral shift (not present on telluric lines of course):



Christian