I was ready to begin imaging, but was without a target for the evening -then I remembered the Dragon launch and checked for visible passes on Heavens-Above.com.
There was an upcoming pass directly overhead in 30 minutes, which is great because I've often found the passes to be of low altitude lately and blocked by the trees at my location.
There was a quick realization that I would have to guide the OTA with one hand, and press the camera's shutter button with the other; I used 800 ISO @ 1/2000, and reluctantly chose JPEG format for the faster data transfer to the laptop, as I was going to be pressing the shutter button when ISS was in the finder's cross-hairs.
I was tempted to try stacking a few images, but the vehicles perspective appeared to change too much between my captured images.
It was an action packed 4 minutes guiding by hand with the clutches released, the meridian flip went smoother than I anticipated; much was learned for the next attempt.