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The redshift observed in astronomy can be measured because the emission and absorption spectra for atoms are distinctive and well known, calibrated from spectroscopic experiments in laboratories on Earth. When the redshift of various absorption and emission lines from a single astronomical object is measured, z is found
In astronomy, a redshift survey is a survey of a section of the sky to measure the redshift of astronomical objects: usually galaxies, but sometimes other objects such as galaxy clusters or quasars. Using Hubble's law, the redshift can be used to estimate the distance of an object from Earth. By combining redshift with angular position data, a ...
The Center for Astrophysics (CfA) Redshift Survey was the first attempt to map the large-scale structure of the universe.. The first survey began in 1977 with the objective of calculating the velocities of the brighter galaxies in the nearby universe by measuring their redshifts at the Smithsonian Astrophysical Observatory in Cambridge, Massachusetts.
Redshift is an application that adjusts the computer display's color temperature based upon the time of day. The program is free software and is intended to reduce eye strain, as well as insomnia [3] (see Sleep § Circadian clock and Phase response curve § Light).
TheSky (astronomy software) Starry Night (planetarium software) RedShift (planetarium software) Cartes du Ciel; Stellarium (software) Integrated observing log that supports OpenAstronomyLog; Insert readings from Unihedron's Sky Quality Meter into observing log; Display and manage images from Digitized Sky Survey; Online library of observing ...
The following is a list of astronomical observatory software. Commercial software. MaximDL; Non-commercial software. Aladin Sky Atlas; Astropy; Cartes du Ciel;
Anglo-Australian telescope, Siding Spring. The WiggleZ Dark Energy Survey is a large-scale astronomical redshift survey that was carried out on the 3.9 metre Anglo-Australian Telescope (AAT) at the Siding Spring Observatory, New South Wales between August 2006 and January 2011.
The 6dF Galaxy Survey (Six-degree Field Galaxy Survey), 6dF or 6dFGS is a redshift survey conducted by the Anglo-Australian Observatory (AAO) with the 1.2m UK Schmidt Telescope between 2001 and 2009.