Focal reducer

0.5X Focal Reducer M28 Thread 1.25 Inch Telescope Eyepiece Camera Accessory

SZMC 0.3X C-Mount Reducing Lens Adapter for Trinocular Stereo Video Microscope Camera with HDMI, USB, VGA

A compact 0.3× C‑mount reducer expands the field of view on a trinocular stereo video microscope, enabling seamless connection to HDMI, USB, or VGA interfaces while maintaining sharp CCD camera imaging.

0.5X Focal Reducer Barlow Lens for 1.25" Eyepieces - Astronomy Telescope Accessory

Datyson 0.5X Focal Reducer Lens for Telescope Eyepiece, Standard 1.25 inch (31.7mm)

Datyson 0.5X Focal Reducer Lens for Telescopes - Standard 1.25 inch (31.7mm) Eyepiece Accessory, Model 5P0087

0.5X Focal Reducer Lens for M28x0.6 1.25" Telescope Eyepiece and Camera Adapter

LAIDA 0.5x Focal Reducer Multi-Coated 1.25 Inch for Telescope Monocular Eyepiece Astrophotography CCD Imaging LD2025B