VizieR Online Data Catalog: New planetary nebulae in LMC (Reid+, 2006)

Over the last few years, we have specially constructed additional deep, homogeneous, narrow-band H and matching broad-band 'SR' (Short Red) maps of the entire central 25deg² of the LMC. These unique maps were obtained from co-adding 12 well-matched UKST 2-h Hα exposures and six 15-min equivalent SR-band exposures on the same field using high-resolution Tech-Pan film. The 'SuperCOSMOS' plate-measuring machine at the Royal Observatory Edinburgh (Hambly et al., 2001MNRAS.326.1279) has scanned, co-added and pixel-matched these exposures, creating 10-m (0.67-arcsec) pixel data which goes 1.35 and 1mag deeper than individual exposures, achieving the full canonical Poissonian depth gain, e.g. Bland-Hawthorn, Shopbell & Malin (1993AJ....106.2154B). This gives a depth ~21.5 for the SR images and R_equiv~22 for Hα (4.5x10^-17erg/cm²/s/{AA}) which is at least 1-mag deeper than the best wide-field narrow-band LMC images currently available.

(2 data files).