As expected, the image is not very good. The 19 minute exposure in ~5 arcsec FWHM seeing was not long enough for an 18.4 magnitude object only 15 arcsec from a star six magnitudes brighter.
The position of the WD is marked, the star is just about visible but not obvious. For comparison a snippet of the DSS2 image is included. The fainter (north-easternmost) star between the two brightest is mag 17.8 in Gaia DR2. The poor seeing is especially well demonstrated by the inability to resolve the ~6 arcsec double which is visible in the DSS2 image.
I will try again with a longer exposure in much better seeing conditions before uploading to my personal web page.