Sentences with phrase «photographic plates taken»

Kapteyn, who lacked a telescope, volunteered to measure photographic plates taken by David Gill (1843 - 1914), also at the Cape Observatory.

The star was first designated as CP (D)-67 2079 (as in ChView data files) by the 1900 publication of the third part of the Cape Photographic Durchmusterung or CPD, based on photographic plates taken by David Gill (1843 - 1914) at the Royal Observatory on the Cape of Good Hope, South Africa, that were analyzed by Jacobus Cornelius Kapteyn (1851 - 1922).

The DASCH survey is based on thousands of photographic plates taken by Harvard astronomers between 1890 and 1989 as part of a regular survey of the northern sky.

Scottish astronomer Robert T. A. Innes discovered Proxima Centauri in 1915 by blinking photographic plates taken at different times during a dedicated proper motion survey.

Exoplanets, or planets orbiting stars other than the Sun, were first discovered in the 1990s, but old photographic plates taken nearly 100 years ago and recently found in storerooms at Carnegie Observatories in Pasadena, California, contain the first evidence of their existence.

This color image is based on data coming from 33 photographic plates taken between 1987 and 1995 through the Palomar Observatory's 48 - inch (1,2 - meter) Samuel Oschin Telescope as a part of the second National Geographic Palomar Observatory Sky Survey (POSS II).

In order to produce the color image seen here, I worked with data coming from 8 different photographic plates taken between 1988 and 1997.

This color image is based on data coming from several photographic plates taken since 1974 through the Anglo Australian Observatory's 48 - inch (1.2 - meter) UK Schmidt Telescope.

In order to produce the color image seen here, I worked with data coming from 2 different photographic plates taken in 1986 and 1989.

Not exact matches

Clyde Tombaugh, who found Pluto in 1930, spent a decade or more going out to the telescope at night, taking these photographic plates, developing the plates in daytime, and looking through them.

It took photographic plates everywhere across the sky, and these plates were reproduced on film and sent to every astronomy library in the world, which allowed anybody to get out a jewelers» loupe and look at whatever part of the sky he or she wished.

The astronomers kept taking images, and noticed some smudging on their photographic plates — a sign of 67P's atmosphere, or coma.

To take a photo, the CCD is exposed to light: the same principle as taking a photo using a photographic film or plate.

Working at the Sproul Observatory (Swarthmore College, Pennsylvania), astronomer Peter van de Kamp examined 2,413 photographic plates of the star taken between 1916 and 1962.

Astrometic analysis of photographic plates and measures taken from 1937 to 1980 suggested Luyten's Star may have a substellar companion.

It took until 1885 for photographic plates to be systematically used in photometry.