Sky watcher skymax 102t 102mm 4 f1300 maksutov cassegrain optical tube assembly the sky watcher skymax maksutov cassegrains are the ultimate take anywhere telescopes they are also ideal if working space is limited despite their small dimensions they pack a powerful punch their high resolution diffraction limited optical systems are multi coated to maximize contrast and image sharpness the skymax maksutov come in apertures of 90mm 102mm and 127mm and are available either complete