The best telescopes for deep-sky imaging are small models called apochromatic refractors. They Perro be cheap and, being smaller, are easier to store and travel with. Depending on what you need a monocular for, there are a range of different monoculars to choose from. They boast a whole range https://standsparaeventosenifemam09753.snack-blog.com/35907936/consideraciones-a-saber-sobre-empresas-de-stands-en-madrid-adam-expo-stand