Ads
related to: best apo refractor for astrophotographybhphotovideo.com has been visited by 100K+ users in the past month
Search results
Results from the WOW.Com Content Network
Example of Bahtinov mask Operation of a Bahtinov mask for refracting optics, showing that rotating it 180° reverses the direction of the pattern. The Bahtinov mask is a device used to focus small astronomical telescopes accurately.
Orion ED120 apo refractor on Orion's Sirius EQ-G "GoTo" and GPS equipped German equatorial mount with portable 12 volt power supply. Orion sold a range of telescopes that they characterize as "beginner", "intermediate" or "advanced", including Newtonians, Maksutovs, Schmidt-Cassegrains, Ritchey-Chrétiens and refractors with or without (sold as optical tube assemblies or "OTA") a variety of ...
Apochromatic lenses for astrophotography in the 60–150 mm aperture range have been developed and marketed by several firms, with focal ratios ranging from f /5 to f / 7. Focused and guided properly during the exposure, these apochromatic objectives are capable of producing the sharpest wide-field astrophotographs optically possible for the ...
Some famous 19th century doublet refractors are the James Lick telescope (91 cm/36 in) and the Greenwich 28 inch refractor (71 cm). An example of an older refractor is the Shuckburgh telescope (dating to the late 1700s). A famous refractor was the "Trophy Telescope", presented at the 1851 Great Exhibition in London.
Yale-Columbia Refractor Yale Southern Station: Johannesburg, Union of South Africa: Relocated 1952: 66 cm (26") 10.8 m: 1925–1952: Yale-Columbia Refractor moved to Mount Stromlo Observatory in 1952, same telescope as following entry. Yale-Columbia Refractor Mount Stromlo Observatory: Mount Stromlo, Australia: Destroyed 2003: 66 cm (26") 10.8 ...
We pick the best lenses for astrophotography fans shooting a starry night sky, to suit a range of cameras and budgets
Field flattener a correcting lens used to reduce field curvature in refracting telescopes for astrophotography. Barlow lens: Optical element to increase the telescope's focal length and magnification, narrow the field of view and reduce coma distortion, providing opposite effects of a telecompressor.
LightBuckets went through an ownership transition in 2011, [citation needed] resulting in a turn-over in what instruments and sites were available. Before then, LightBuckets instruments included Ritchey-Chrétiens by RC Optical Systems including a 0.61 m (24”) f/8 [4] designated LB-0001 and a 0.37 m (14.5") designated LB-0003 both located at the company's observatory in Rodeo, New Mexico.
Ads
related to: best apo refractor for astrophotographybhphotovideo.com has been visited by 100K+ users in the past month