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Despite decades-old predictions of the expected presence of dozens ofcataclysmic variables in the cores of globular clusters, the number ofirrefutable, out-bursting candidates is still barely a handful. Usingmulti-wavelength, multi-epoch HST images we have produced outburst andquiescence light curves for the recently discovered large amplitude variableCV1 in the core of the post core-collapse globular cluster M15. The lightcurves and blue colors show that the object is a bona fide dwarf nova, withabsolute magnitude at maximum light rivaling that of the most luminous knowndwarf novae.Comment: 17 pages, 5 figures. Submitted to A

The Luminous Erupting Dwarf Nova CV 1 in the Dense Globular Cluster M15