Berlin Space Technologies is an expert for attitude control systems. A vital element is the ST-100. It is based on 20 years of star tracker development in Berlin. The ST-100 is designed to be a low-cost product for micro and nano satellites. It allows tracking of magnitude 6 stars with an update rate of 5Hz after initial acquisition.
Please Note: the ST100 is a legacy item and no longer in production. Please have a look at the successor the ST200 and ST400