This is an image of Mercury transiting the sun. Mercury is the small black dot in the mid-upper right of the sun. I used a 100 to 400 lens plus a 1.4 extender and an Eclipse Filter, 18 stop.

Canon 7D Mark II camera, Canon 100 to 400 lens, Canon 1.4 extender, 18 stop Eclipse Filter, Gitzo tripod, Really Right Stuff ballhead

Used Adobe Lightroom and Adobe Photoshop