Not a full frame of one bloom, but this was as close as the 180 with two tubes could get and still focus. The 100 might have got closer but the lens you have with you is your best lens and that was the 180.
Even though I’ve been watching these for a couple of weeks, actually three, there are still buds at the top yet to open. Orchids do a slow maturation.
It took a while, but the closeup happened. Even with the 100, I think a sharp closer shot would require stacking.