Upper panel: optical spectra of WISE J184450.96+570938.6, counterpart associated with the AGU 2FGL J1844.7+5716, classified as a BZB on the basis of its featureless continuum. The average S/Nis also indicated. Middle panel: normalized spectrum. Lower panel: 5′ × 5′ finding chart from the Digital Sky Survey (red filter). The potential counterpart of 2FGL J1844.7+5716 is indicated by the red circle.