love reading through this thread
I am building a little barn door tracker atm to try out with the Q (and K5II), also have a Tair-3 300mm lens on the way to test
Unfortunately in the middle of a very hot summer, so conditions are not ideal, but ill try anyway! I assume you are all mostly using the official Pentax adapter for these shots? Has anyone used the official K > Q adapter with the official M42 adapter as well? I discovered that the M42 adapter does not work in my jinfinance K > Q adapter, it doesnt seat propertly and just rotates around inside the mount...
Oh and here is my moon shot through some smoke, with Sigma 70-200mm HSM II @ 200mm f4.0, about a 50% crop