The D I V A satellite aims at a sky survey to obtain global astrometry and low resolution spectrophotometry of stars down to about 15^th mag in the V-band.

Spectrophotometry will be obtained for about 10 million stars, including UV-photometry in two channels adjacent to the Balmer jump. . The spectrophotometry will be used to derive surface temperatures, surface gravities and metallicities of the stars as well as the extinction toward the star. These parameters will be derived in an automated way.

The spectrophotometry package of the D I V A-project will be the responsability of the following groups:
=> Sternwarte, Univ. Bonn  (SUB), Coordinator K.S. de Boer
=> Inst. for Astron. and Astrophys. Tübingen (IAAT)
=> Remeis Sternwarte Bamberg (DRS)
=> DLR Inst. Planetenerkundung Adlershof (DLRA)
=> Astrophysikalisches Institut Potsdam (AIP)
=> Thüringer Landessternwarte Tautenburg (TLS)

In order to develop the method to arrive at the desired parameters, data available in the literature are used. We will let observed, absolute calibrated spectra run through the DIVA-simulation software, and produce the DIVA science frames. From these we will read the data to be used to retrieve the stellar parameters.

The catalogues included in our testing are:
Gunn J.E., Stryker L.L : Astrophys. J. Suppl. Ser. 52, 121 (1983)
Alekseeva G.A.,Arkharov A.A. : Baltic Astron. 5, 603 (1996)
Cayrel de Strobel G. et al. : Astron. Astrophys. Suppl. Ser. 124, 299 (1997)
Kharitonov A.V. et al. : Alma-Ata, Nauka, p. 484 (1988)
Glushneva I.N. et al. : Sternberg Spectrophotometric Catalog
Glushneva I.N. et al. : Moscow Spectrophotometric Catalog (MSC)
Biryukov V.V. et al. : Astron. Astrophys. Transact., 16, No1 (1998)
Danks A.C., Dennefeld M. : Pub. Astron. Soc. Pac. 106, 382 (1994)
Torres-Dodgen A. V., Weaver W. B. : Publ. Astron. Soc. Pacific 105, 693 (1993)
Johnson H.L. : Rev. Mex. Astron. Astrofis. 5, 25 (1980)
Kiehling R. : Astron. Astrophys. Suppl. Ser. 69, 465 (1987)
Massey P., Strobel K., Barnes J.V., Anderson E. : Astrophys. J. 328, 315 (1988)
Hubble Space Telescope White Dwarf Standards
Stelib: A stellar Library for stellar population synthesis models V3.1 by Jean-Francois Le Borgne et al. (2001)
and others that will be posted soon.

Synthetic Spectra based on Kurucz models were provided by Coryn Bailer-Jones(MPIA-HD), on White Dwarfs by Detlev Koester (Kiel) and Ulrich Heber (DRS).

                      The   spectrophotometry project   coordinated at the   Sternwarte Bonn.
                      (with financial support by the DLR)

                      The   CCDs for DIVA   -   testing of protoypes   coordinated at the   Sternwarte Bonn.
                      (with financial support by the DLR)

                      The   GLOSSARY of acronyms in the DIVA project