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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 ...
High-resolution imaging of virgo cluster galaxies – i. observational techniques and first results
(Oxford University Press (OUP), 1991-11-01)
We investigate the potential of the image sharpening technique for making high-resolution images of Virgo cluster galaxies, in order to obtain new estimates of this cluster's distance. We have used both the Galway Image ...
Pulsed optical emission from psr 0656+14
(IOP Publishing, 1997-10-01)
Using data collected with the Special Astrophysical Observatory (SAG) 6 m telescope and the University College Galway (UCG) Transputer Instrument for Fast Image Deconvolution (TRIFFID) imaging photometer, we show that the ...
A search for the optical counterpart of the triple pulsar system psr b1620−26 in m4
(IOP Publishing, 1996-12-20)
We have performed photometry in B and V of the field of the triple system PSR B1620-26 in the globular cluster M4. Our images were taken with two two-dimensional imaging photon-counting detectors, which permitted deep ...