Fig. 1.
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SDSS RGB image of the 20′×20′ region around Nube. The insets show a zoom in on the galaxy, showing how it appears on images with different limiting surface brightness in the r-band (26.7, 28.6 and 30.5 mag arcsec−2; 3σ on 10″ × 10″ boxes). Previously known galaxies in the field of view are labelled.
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