Marla Geha (Yale) came in to town today to ask Boris Leistedt (NYU) and I whether our new photometric redshift method could be used at very low redshifts. In general, low redshifts are difficult because even a large fractional change in the distance creates only a small change in the colors when the redshift is small. Geha (with Wechsler and others) has a sample of possible (intrinsically) faint satellites of low-redshift galaxies and they would like to improve the efficiency of their spectroscopic follow-up. A great project for a great tool!
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