I used the website, transit-finder.com, to plan the exact time and location to photograph the ISS as it transited the sun. Fortunately the timing was very accurate as I was not able to witness the event through the viewfinder and simply started the camera motor drive at the designated time.

OM-1 camera body with 300mm f4 lens + 2.0 teleconverter equipped with a Thousand Oaks solar filter on a tripod.

20 images were edited in Lightroom and then blended in Photoshop for the final composite.