ZWO Darkening Ring Set for EFW5x2, EFW7x2 and EFW 7x36-II

ZWO Darkening Rings D88: Essential for a Light-Tight Astrophotography Setup

The ZWO Darkening Rings D88 are expertly crafted shims designed to eliminate light leaks that can occur where your EFW filter wheels connect to ZWO imaging equipment. These rings are an indispensable addition to your astrophotography gear, ensuring that your images remain contrast-rich and free of unwanted light interference.

Product Features:
Perfect Fit: With an external diameter of 88mm, these rings seamlessly fit a range of EFW filter wheels including the EFW 5 x 2", 7 x 2", 7 x 36mm V1, and 7 x 36mm V2 models.
Ultra-Thin Design: At less than 0.2mm thick, the rings are designed to prevent light leaks without significantly altering the backfocus distance of your setup.

Technical Specifications:
External Diameter: 88mm for a snug fit with compatible ZWO filter wheels.
Internal Diameters: Two rings come with an internal diameter of 55mm, and two with 58mm, offering versatility for various configurations.
Thickness: All rings maintain a slender profile of ≤0.2mm, ensuring minimal impact on your imaging train's spacing.

Packaging and Compatibility:
Quantity: Each set includes four darkening rings, providing a complete solution for your imaging setup.
Usage: Designed for dual placement, one ring on the camera side and one on the OAG/spacer side of the filter wheel, for a completely light-tight seal.

Streamlined Astrophotography Workflow:
ZWO's attention to detail is evident in the Darkening Rings D88, facilitating a straightforward and effective method to enhance the quality of your astrophotographs by preventing stray light from affecting your long-exposure images.