The best telescopes for deep-sky imaging are small models called apochromatic refractors. They can be cheap and, being smaller, are easier to store and travel with. These are more expensive and the cheapest new model is likely to set you back around $1000 but you could also buy used https://sethcdeed.nizarblog.com/36043160/empresas-de-stands-en-barcelona-una-visión-general