Not even as many as one a month! Unlike the commercial sector, cameras for space are generally very expensive. Also, because they’re more specialised than those we tend to use on Earth, what works for one person won’t necessarily work for another. That means for nearly every project we need a new design, so we spend a lot of time designing as well as manufacturing. In one of my current projects we plan on building 7 over 2 years, which is very fast for us!