Atlas SMC

The Atlas section (Part 4) contains, for each LMC and SMC field, transparent overlays listing positions (marked by +) and Catalogue source numbers allowing immediate comparison of map structures and Catalogue entries. As these overlays also contain the positions of all SAG stars in the field (marked by ), comparison of infrared sources with optical images is likewise possible. 

The Atlas proper is contained in the detail maps for both Clouds. For the SMC we include DPM map sets 2 (NS scans) and 3 (EW scans), while for the LMC we include map sets 1 (EW scans) and 2 (NS scans). Note that the LMC EW scanned maps show a bad detector scan at the SE end of the Bar. Maps are identified in the margin by wavelength and by field number. The numbers correspond to those in Table 4.1 and those of the transparent overlays, which can be used to read off equatorial coordinates (1950.0). On the overlays, source positions and numbers corresponding to the Catalogue entries of Part 3 are marked. Also marked are the positions of SAO (Galactic foreground) stars for comparison with optical images. 

Table SMC-4.3 Contour levels of the SMC Infrared Atlas (in 10 Watt m sr ).

---