Cut-out images of the location of J1634+44 at the various wavelengths where it has been observed. The first row contains, from left to right, the Stokes V LOFAR image of the brightest pulse, the CFHT J-band image, and the y, z and i images from Pan-STARRS. The second row contains, again from left to right, the UNIONS images in the r, g and u-bands, the GALEX MIS NUV image, and the GALEX MIS FUV image. In each image, a dashed white line shows the 2″ positional uncertainty region around the measured position of J1634+44. The FWHM of the beam in the LOFAR image is indicated by the shaded black ellipse. In the UNIONS images, an orange circle shows the location of the detections.