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Classification Based on 102/Å/mm Objective Prism Spectra
1979
International Astronomical Union Colloquium
Preserved Fulltext
Equipped with a 15° F2 objective prism the (45/77/150)cm Schmidt telescope of the Copenhagen university Observatory, Brorfelde yields spectra of 102 A/mm at Hα to a limit of approximately mpg=9.5.
doi:10.1017/s0252921100104415
fatcat:62fd5qbzefhvlchyllc5qxxzma