White House Budget Plan Would Devastate U.S. Space Science Scientists are rallying to reverse ruinous proposed cuts to both ...

Scientists have long puzzled over a discrepancy in how fast the universe is expanding, but new, sharper data from the James ...

NASA is moving forward with an ambitious vision to place a radio telescope on the far side of the Moon, in a remote lunar ...

Born of x-ray astronomy, a novel handheld gamma-optical camera stands at the nexus of medical and industrial imaging. By ...

The A Dobsonian telescope, an altazimuth-mounted Newtonian telescope design popularized by John Dobson in 1965, is credited with vastly increasing the size of telescopes available to amateur ...

Others claimed at the time that he stole the design from Zacharias Jansen ... aberration issues that plagued refracting telescopes. Newton believed that this issue could never actually be cured ...

With the telescope being a Newtonian design, it means the optical system must be collimated to perform at its very best. This can be a confusing and frustrating process for the beginner as it ...

Isaac Newton introduced the reflecting telescope in 1668, which used mirrors instead of lenses to overcome chromatic aberration—a flaw in refracting telescopes that distorted images. This innovation ...

Hence, the combination of reference and echo signals into one signal detection and processing channel can be realized for a low-cost and compact system design. Moreover, modified Newtonian telescope, ...

As implied by the name, rather than slowing the telescope — as typical coma ... but is inherent in the Newtonian optical design. The faster the mirror, the more quickly the image degrades.