1. Spectroscopy/Imaging; Leibniz Institute of Photonic Technology; Albert-Einstein-Str. 9 07745 Jena Germany
2. Institute of Physical Chemistry and Abbe Center of Photonics; Friedrich Schiller University; Helmholtzweg 4 07743 Jena Germany
3. Astrophysical Institute and University Observatory (AIU); Schillergäßchen 2-3 07745 Jena Germany