Newtonian Mirror

Newtonian Mirror

Supplier
Njdkdoptics
Category
Optical Mirrors
Origin
China

The Newtonian reflecting telescope was invented by British scientist Isaac Newton in 1668. It uses a concave primary mirror, usually parabolic in modern designs, and a flat secondary mirror at 45 degrees to the optical axis. Light reflects from the primary toward a focus, then the secondary turns it by 90 degrees to form an image at an eyepiece on the tube's side. This avoids refractor chromatic aberration and is relatively inexpensive, particularly for large apertures, benefiting observation of faint deep-sky objects. Disadvantages include coma and the need for periodic collimation. Newtonian telescopes are popular for amateur construction and use and helped establish the basis for large professional telescopes. Dongkeda offers Newtonian systems in various apertures and magnifications, with coating options to improve performance and image quality, plus accessories and assembly services.

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Overview

The Newtonian reflecting telescope was invented by British scientist Isaac Newton in 1668. It uses a concave primary mirror, usually parabolic in modern designs, and a flat secondary mirror at 45 degrees to the optical axis. Light reflects from the primary toward a focus, then the secondary turns it by 90 degrees to form an image at an eyepiece on the tube's side. This avoids refractor chromatic aberration and is relatively inexpensive, particularly for large apertures, benefiting observation of faint deep-sky objects. Disadvantages include coma and the need for periodic collimation. Newtonian telescopes are popular for amateur construction and use and helped establish the basis for large professional telescopes. Dongkeda offers Newtonian systems in various apertures and magnifications, with coating options to improve performance and image quality, plus accessories and assembly services.

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Supplier Information

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Nanjing Dongkeda Optoelectronics Technology Co., Ltd., founded in 1999 and located in Nanjing Jiangbei New Area, occupies a self-owned plant of 9,000 sqm. It is a national high-tech enterprise specializing in precision optical component processing, optical lens assembly and testing. The company has a 200 sqm Class 10,000 cleanroom, a 100 sqm Class 1,000 cleanroom, and Class 100 ultra-clean workbenches. It provides high-precision, medium-to-large aperture, small-to-medium batch optical mirrors and lens assembly services for scientific research. Products are exported to the US, Germany, UK, Japan, etc. The company has long-term cooperation with research institutes and universities, and participated in the 'Shenguang' major science project. It overcame the industry challenge of H-FK61 cemented lens cracking, ensuring high performance. Adhering to 'Quality, Service, Dedication', the company aims to advance optical component localization.

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