3 GREEN OR BLUE STARS NEAR RADIO SOURCE
Pretty unusual field. Not clear these "stars" are connected with the radio object.
Indeed; the host of the hourglass source seems to be invisible in SDSS gri  (smoothed FIRST contours in red):
 an RGB JPEG produced, by SDSS, using the three bands g (as B ), r (as G), and i (as R)
Boilerplate: SDSS image per
http://skyservice.pha.jhu.edu/DR10/ImgCutout/getjpeg.aspx, FIRST contours derived from FITS files produced using SkyView with Python code described in this RGZ Talk thread. Image center per the ARG image (left; J2000).