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

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

Sensor CMOS Sony IMX252 monochrome

USB cable for optical polar scope

USB for PS

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