Airy Disk Flattener / Reducer 0.92x for Telescope Size 85mm-152mm

This 0.92x field flattener/reducer is designed for Airy Disk APO refractors from 85mm through 152mm. It provides a full-frame 44mm imaging diameter, uses two ED glass elements, and offers adjustable back focus.

Compatible reduced setups include AP85 to 469mm f/5.5, AP95 to 529mm f/5.5, AP106 to 644mm f/6, AP140 to 837mm f/6, AP152D to 690mm f/4.6, and AP204 to 1314mm f/6.4.

Specifications

• Magnification: 0.92x
• Connecting thread: M63x1
• Camera thread: M48x0.75
• Image circle: 44.4mm
• Minimum back focus: 55mm
• Maximum back focus: 64.96mm
• Weight: 0.285kg

Designed for serious astrophotography workflows, the Airy Disk Flattener / Reducer 0.92x for Telescope Size 85mm-152mm helps refine field correction, back focus, and imaging performance for compatible Airy Disk refractors. It is a practical upgrade for imagers who want sharper stars, cleaner edge performance, and a more complete telescope imaging system.