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Triffid photometry of globular cluster cores - i. photometric techniques and variable stars in m15
(Oxford University Press (OUP), 1998-05-11)
The Galway/DIAS Image Sharpening Camera, TRIFFID, has been used to make observations in two colours of the centre of the post-core-collapse globular cluster M15. We present here our analysis of the photometry in B over two ...