Celestron 102mm f/10 refractor/Nexstar SLT mount/ASI224MC with 2.5x Barlow
Preselected best frames with PIPP, stacked with AutoStakkert3! and Photoshop for post-processing.
Mercury, the innermost planet in our solar system, is at its greatest eastern elongation so its phase is the same as that of the first quarter Moon. Mercury was about 5 degrees above the western horizon when I captured this image just after sunset.