Tele Vue 1mm Imaging System Spacer Ring

Focuser extensions of various lengths are often used to create the necessary distance for proper spacing of field lenses to imager; the required distance will vary depending on camera specifications. All are black anodized aluminum with anti-reflection threads for maximum contrast. 0.040" (1mm) Long Accessory Tube for 2.4" adds 0.040" (1mm) extension between Imaging System accessories. Televue Product Number: TLF-0040