A photometric study of the supercluster ms0302 with the uh8k ccd camera: image processing and object catalogs
Jul, 1999Citations per year
Abstract: (arXiv)
We describe in detail the processing of a set of images of the z = 0.42 supercluster MS0302 taken with the UH8K camera at CFHT. The result of this is a pair of seamless combined V- and I-band images of the field, along with a characterization of the noise properties and of the point spread function (PSF), and catalogs of about 30,000 faint galaxies. The analysis involves the following steps: image preparation: detection of stars and registration to find the transformation from detector to sky coordinates: correction for extinction and/or gain variations: modeling of the PSF: generation of images with a circular PSF: image warping and averaging: modeling of the noise auto-correlation function: faint object detection, aperture photometry, and shape measurement. The shear analysis is described elsewhere.References(6)
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