These stars, however, are typically sharper for their FWHM than are the GCs. Upon visual inspection, we found that the locus of sharp but extended points primarily consist of unresolved blends. One disadvantage of using SExtractor is that with only one iteration of object detection and no PSF subtraction, it cannot detect faint stars that are very close to brighter ones. The bottom plot illustrates more clearly how the loci of stars and GCs separate in sharpness at larger FWHM.

The lines in Figure \[figure:sharpFWHM\] denote the area within which we accepted an object as a GC candidate for our second and third spectroscopic runs (there was no sharpness/FWHM cut for the initial run). First, we exclude most of the stellar locus. The top line that asymptotes to a normalized sharpness of 0.6 excludes the most egregious blends from being targeted (although it may also exclude star-GC blends). While the GCs actually form a fairly tight sequence in this plot, we chose to be conservative and allow more stars into the selection area to increase our completeness. The last morphological cut was a relatively loose one that rejected all objects with ellipticities greater than 0.4. Almost all GCs have ellipticities 