Questar telescope with a full aperture glass filter and a Nikon D850 camera at iso 640.
This is a single image processed with Photoshop.
Transit of Mercury
In Tucson seeing was mostly fair to poor. At sunrise there were thick clouds that disappeared for a nice window after mid-transit when this photo was captured and then more haze and light clouds for toward the end of the transit. This photo was at about best seeing conditions.