This panorama has been shot from a 6m high pole using the innovative Sony ILCE-QX1 ‘camera’. I took on e image in each cardinal direction and an extra shot to get rid of my shadow. For a more detailed description of the camera and lens setup see this post from PanoTwin Jürgen.
Show on map
Does 43 fisheye 7.5/3.5 has flare in each shot? I tried with A6000 and it has flare at the border but your pano does not show up.