eighteenth-century astronomical equipment reflecting telescope
The main component of a reflecting telescope is a concave mirror (primary mirror), which reflects light to the focal point. Unlike refracting telescopes, reflecting telescopes use mirrors instead of lenses to focus light, which avoids chromatic aberration problems. Common reflecting telescope designs include the Newtonian and Cassegrain telescopes. Reflecting telescope design was further developed in the 18th century, particularly with large aperture and high power reflecting telescopes. The use of a parabolic mirror allows the light rays parallel to the optical axis of the objective lens to be accurately focused on the focal point, thereby greatly improving the image quality.
Vintage copper shell astronomical telescope
large array radio telescope
Radio telescope (English name radio telescope) is similar to reflective optical telescope. The projected electromagnetic wave is reflected by a precise mirror and then meets a common focus. It is the basic equipment for observing and studying radio waves from celestial bodies. Unlike optical telescopes, optical telescopes focus on visible light, while radio telescopes focus on long-wave electromagnetic waves. On December 5, 2022, after 30 years of preparation, the construction of the Square Kilometer Array Observatory (SKAO), the world's largest radio telescope, broke ground at two locations in Africa and Australia.
Old style copper astronomical telescope
WW1 Antique Telescope
3D model of astronomical telescope
Indoor and outdoor tripod short tube telescope
Indoor and outdoor stainless steel metal tripod astronomical telescope
Retro vintage single tube telescopic telescope
Antique sextant telescope optical instrument
19th century Navy binoculars
ZenithTempest binoculars black
American military AN-PVS-31-BNVD night vision binoculars
Indoor and outdoor red walnut solid wood triangular support frame metal parts assembly astronomical telescope
astronomical observation instrument
An observational astronomical instrument of the first half of the 19th century used to determine the height of a celestial body above the horizon. It consists of a frame limited by two radii and a graduated arc, an observation telescope and a mirror system. The 1/5 arc is the fifth part of the circle, hence the name, similar to the quadrants, 1/6, and 1/8 (based on the fourth, sixth, and eighth parts of the circle, respectively). It is currently housed in the Jagiellon University Museum in Munich, Germany.
binoculars
Popular Models
Shrine
115 View
King Kong Hercules Wood Carving
166 View
The bell tower of a Japanese temple
189 View
Japanese Samurai Helmet
117 View
Random Model
Rocking Chair by Natalia Patrai
141 View
striped puffer specimen
177 View
Butter Croissant
223 View
Nike AJ High-top sneaker
174 View
Red copper gun barrel
166 View
Bush Scissors
366 View
American Wooden Motorboat
154 View
