I'd say the most important factors for astrophotography are in order:
1. Location and weather
2. Optics
3. Sensor, tracking and post processing
They can't control the first, but it seems they put everything in (3) instead of (2). The telescope is a 15cm refractor. I don't know any amateur astronomer using a refractor, let alone one with this budget. Refractors introduce further optical aberrations compared to first surface mirrors, usually collect less light and have shorter focal lengths for the same telescope size. Is there something I'm missing?
1. Location and weather
2. Optics
3. Sensor, tracking and post processing
They can't control the first, but it seems they put everything in (3) instead of (2). The telescope is a 15cm refractor. I don't know any amateur astronomer using a refractor, let alone one with this budget. Refractors introduce further optical aberrations compared to first surface mirrors, usually collect less light and have shorter focal lengths for the same telescope size. Is there something I'm missing?