Manufacturers that provide high-quality label nameplates OEM services.
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Manufacturers that provide high-quality label nameplates OEM services.
Since the cost of the reflector is much lower than that of the lens, for large-aperture telescopes, it is often made into a reflective type instead of a bulky refraction type. The portable design of the reflecting telescope, although the lens barrel is only 500mm, but the focal length can reach 1000mm. The focal ratio of the Newtonian mirror can reach f/4 to f/8, which is very suitable for observing those faint extragalactic galaxies and nebulae. Sometimes this kind of telescope is also very suitable for observing the moon and planets. If you want to take a picture, it is very good to use a Newtonian telescope. But it is a bit more troublesome to use than foldback telescope. The Newtonian structure can converge light well and get a very bright image at the focal point. Newtonian reflecting telescopes are relatively simple in structure, low in cost, superior in performance, and easy to make, making them the first choice for amateurs to make themselves.
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We (Alice) are a manufacturer specializing in the production of optical signs, focusing on providing supporting services for the furniture industry, machinery industry, electronic and electrical industry and other industries, mainly producing zinc alloy, aluminum, stainless steel, copper, brass, pvc Wait for different labels.
Contact us E-mail: sales03@alicelogo.com
Alice has dedicated to precise product since it was established in 1998, especially focus on furniture and electronic appliances field as a tendency.
