Tele Vue 0.25" Accessory Tube For 2.4" (TLA-0250) 20x Binoculars which is of great convenience

which is of great convenience for composition when imaging the deep-sky objects

Since the T-ring is camera-brand specific

you'll be able to enjoy a wide range of high and low power views—and switch between them quickly and easily

Dazzling Views with High Quality Optics

the distinctive pattern was invented by Russian amateur astrophotographer Pavel Bahtinov

Tele Vue 0.25" Accessory Tube For 2.4" (TLA-0250) 20x Binoculars which is of great convenience0. 25" Length Accessory Tube for 2. 4" adds 0. 250" (6. 4mm) extension between Imaging System accessories. 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.