WILLIAM OPTICS 1.25" 90° ERECTING PRISM Chroma Each filter is individually tested

Each filter is individually tested to ensure a high quality standard

Short locking ring with knurled outer part and internal M42 female thread

Wi-Fi external antenna

The extenders are stackable so if you need an extra 1

- 4 A peak

WILLIAM OPTICS 1.25" 90° ERECTING PRISM Chroma Each filter is individually testedThe William Optics 1. 25" Erecting Prism is a high quality 90 image erecting BAK4 prism with anti reflection coatings for premium refractors. The helical focuser mechanism on the top barrel makes fine focusing quick and easy. Meticulously CNC machined and anodized black, internally matte blackened and threaded for no stray light reflection, the 1. 25" erecting prism is an exceptionally well constructed piece of equipment. The compression ring prevents