Ad
related to: spectra catalogue template free
Search results
Results from the WOW.Com Content Network
The Henry Draper Catalogue (HD) is an astronomical star catalogue published between 1918 and 1924, giving spectroscopic classifications for 225,300 stars; it was later expanded by the Henry Draper Extension (HDE), published between 1925 and 1936, which gave classifications for 46,850 more stars, and by the Henry Draper Extension Charts (HDEC), published from 1937 to 1949 in the form of charts ...
Z — Fritz Zwicky, Catalogue of galaxies and of clusters of galaxies; ZC — Robertson's Zodiacal Catalogue (James Robertson's catalogue of 3539 zodiacal stars brighter than 9th magnitude) Zij — Islamic astronomical books that tabulates parameters used for astronomical calculations of the positions of the Sun, Moon, stars, and planets
This category contains stars from the Henry Draper Catalogue (HD), or its extensions (HDE) and (HDEC). Help keep this category in order, modify [[Category:Henry Draper Catalogue objects]] to [[Category:Henry Draper Catalogue objects|######]] , dropping the HD or HDE or HDEC prefix, using only the number, on pages that categorize here.
The following is a list of NGC objects, that is objects listed in the New General Catalogue (NGC). It is one of the largest comprehensive astronomical catalogues for deep sky objects such as star clusters, nebulae, and galaxies. List of NGC objects (1–1000) List of NGC objects (1001–2000) List of NGC objects (2001–3000)
A first result of this work was the Draper Catalogue of Stellar Spectra, published in 1890. Williamina Fleming classified most of the spectra in this catalogue and was credited with classifying over 10,000 featured stars and discovering 10 novae and more than 200 variable stars. [53]
Bright Star Catalogue (5th rev. ed.) HD 202259 is a suspected variable star in the equatorial constellation of Aquarius . With an apparent magnitude of 6.39, [ 2 ] according to the Bortle scale it is faintly visible to the naked eye from dark rural skies.
Gemologists frequently use spectroscopes to determine the absorption spectra of gemstones, thereby allowing them to make inferences about what kind of gem they are examining. [9] A gemologist may compare the absorption spectrum they observe with a catalogue of spectra for various gems to help narrow down the exact identity of the gem.
During 1871 Konkoly-Thege constructed a telescope within his castle-residence, and in 1874 constructed an observatory in his palace park within Ógyalla; observations from here were used by Radó Kövesligethy to produce the Ógyallan Catalogue of Spectra.
Ad
related to: spectra catalogue template free