I used Astra on one of my old observatories (an aging Explora-Dome) and I can say it's definitely a very nice experience compared to "legacy" tools like ACP from DC3. That being said, however, it kind of sits on the lower end of functionality compared to existing commercial observatory control offerings like Starkeeper's Voyager platform, especially when it comes to advanced scheduling features and scripting. Still, for basic needs it's nice to have a decent open source alternative in a very niche ecosystem.