Fig. 1
A 1′ × 1′ field of our final Y-band image around the expected position of WISE0855 (north is up, east is left). Green circles mark the positions of the source given by Luhman (2014b) and Wright et al. (2014) from the WISE and Spitzer observations. The first circle on the right shows the position obtained with the WISE satellite on May 5, 2014. Our observations were made between May 10 and May 26, 2014, and the source would have moved less than 10 pixels in this image and hence would be visible at the right edge of that circle. The circle sizes are larger than the uncertainties in position.
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