The Starbright XLT advanced optical multicoatings package includes mirror coatings consisting of multiple layers of vacuum-deposited high reflectivity aluminum on both the primary and secondary mirrors. The mirror coatings are enhanced with titanium dioxide for maximum reflectivity and then overcoated with a protective layer of silicon monoxide (quartz) for long life.

A unique combination of magnesium fluoride and hafnium dioxide high transmission antireflection coatings is vacuum-deposited on both sides of the Schmidt corrector lens for maximum light throughput and contrast. The corrector lens itself is made of high transmission water white float glass instead of the conventional soda lime glass (which has 3.5% lower transmission) used in other telescopes.

The Starbright XLT multicoatings give you higher light transmission for brighter deep space images and shorter exposure times during CCD and DSLR photography. Across the total visual/photographic spectrum from 400nm to 750nm, independent laboratory tests show the new Starbright XLT coatings are 16% brighter overall than even the original industry-standard Starbright multicoatings. They also visibly increase the contrast on subtle lunar, planetary, and nebula details when compared with a scope with standard multicoatings.