![]() The product is still guaranteed for five years though, so don't let that put you off. The Opticron Oregon 4 PC 8x42 was discontinued in March 2022 so if you're thinking of getting one, don't wait too much longer. And if you wear glasses, you will appreciate its very generous 22mm eye relief. The monocular incorporates an external focuser for easy operation with one hand, though it lacks a built-in 1/4-inch tripod adaptor. It has phase-corrected prism coatings and multi-coated optics to deliver clear, crisp views daily and in low light. The roof prism design is all about wide-field viewing and top-quality optics. For general astronomical use, it boasts a 42mm objective lens that lets in just enough light, and the 8x magnification ensures you get a clear, stable image when sweeping across the night sky. The Opticron Oregon 4 PC 8x42 is the perfect option for those who need a hardy all-weather monocular as it's waterproof and nitrogen-filled to eliminate fog. Want to see more? Here are the Best telescopes for seeing planets.It comes with a hand strap and a carry clip that you can use to attach the monocular to a belt or bag. With its multi-coated extra-low dispersion glass, you can expect detailed and high-resolution images at long distances. So what is the Vortex Recon R/T 15x50 for in terms of night-sky viewing? The Moon. Even though they have a large 50mm objective lens, the greater magnification at night results in a small exit pupil, which reduces the brightness of the image. The 15x magnification of the (incredibly expensive) Vortex Recon R/T 15x50 will give you a closer look at objects than your average pair of astronomy-centric binoculars or monoculars. Moderate magnification factors of around 8x are preferred as they're more of a happy medium. The high magnification also magnifies any movement or wobbles, so it's a lot more challenging to get a steady image. Higher magnification means more weight and the need for larger objective lenses to maintain a bright view and the ability to use them at night. It's always tempting to go for the highest magnification possible when looking at a new optical instrument, but that's not always the best choice.
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