150mm Maksutov Cassegrain OTA

The iOptron 150mm Rumak Maksutov-Cassegrain OTA delivers exceptional optical performance with refractor-like color correction at an affordable price point. This compact catadioptric design features a BK-7 primary mirror, Rumak-type secondary mirror, and Maksutov meniscus corrector lens, all aluminized and quartz-overcoated for durability and contrast. The dual-speed focuser enables precise fine-tuning for both visual observation and astrophotography, while the included attachable dew shield—uncommon for Maksutov designs—provides superior performance in cool and humid conditions. Ideal for planetary observation, deep-space imaging, and double-star astronomy.