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Debrecen Photoheliographic Data 1990 Catalogues: combined data: DPD1990.txt, daily data: dDPD1990.txt, group data: gDPD1990.txt, spot data: sDPD1990.txt Images of sunspot groups: 1990group_jpg Full-disk white-light observations: 1990fd_large_jpg, 1990fd_large_fits Magnetic observations: 1990magn (original), 1990magn_jpg (quick-look, solar north at the top) |
| ACKNOWLEDGMENTS |
The DPD 1990 was supported by grant of the Hungarian National Foundation for Scientific Research No. OTKA T037725 by the ESA PECS contract No. 98017. |