WILLIAM OPTICS ULTRA-CAT 76 f/4.8 REFRACTOR pier This extended NIR range allows

This extended NIR range allows use with modern IR-sensitive CMOS planetary cameras with exceptional clarity

75x reduction factor shortens the focal ratio of the 65PHQ to f/4

and it ensures a secure and reliable connection that’s resistant to accidental disconnections—especially useful in mobile or remote observatory setups

USB for PS

The majority of telescope mounts employ a worm drive gear system

WILLIAM OPTICS ULTRA-CAT 76 f/4.8 REFRACTOR pier This extended NIR range allowsThe William Optics UltraCat76 is a high performance 76mm apochromatic refractor designed for astrophotographers who demand top tier performance. Featuring a 5 element advanced Petzval optical design and a fast f 4. 8 focal ratio, it delivers breathtaking edge to edge clarity and vivid details, making it perfect for capturing expansive celestial views. Its robust build, exceptional optics, and innovative features redefine the standard for