To get the best seeing on Earth, buy the highest resolution telescope you can afford and set it up in the select location in Antarctica discussed in this link:
https://www.space.com/best-night-sky-te ... ctica.htmlThen find a way to embellish your scope electronically so you can see its images from a computer screen thousands of miles away in a warm location. If you insist on looking directly through eyepieces on your telescope to get immersion highs, don't forget to dress in layers -- with a rescue team nearby in case this doesn't work out.
Thanks to Greg Barr for directing me to this webpage.