Interferometry wasn't our goal, and I'm not sure that the tiny distance between our scopes would be suitable. We put the array together for a simple reason -- here in Thailand we have a very short imaging season followed by a very long rainy season. Having multiple scopes pointing at the same object multiplies our productivity, turning one night into four. Our intent is to be shooting multiple filters on a single object. Last night we successfully autofocused all four array scopes in parallel using custom software being built to control our array. Within a week we hope to be shooting our first sequence with all four in parallel.
We obviously maintain a good relationship with OS. Because we are located in a country with no type of astronomy technical support we sometimes rely heavily on the timely input from our vendors to address issues. OS has always been responsive and is a very good partner of ours. The speeds of these telescopes can present challenges that you may not have dealt with before so be sure to account for those (e.g. critical focus becomes more difficult at higher speeds). The contrast of all of our OS scopes is just amazing, especially considering our very light polluted skies.