What are spectrographs?

Some articles on spectrographs, spectrograph:

Stellar Wobble - History
... Otto Struve proposed in 1952 the use of powerful spectrographs to detect distant planets ... by its continuously varying radial velocity, would be detectable by the most sensitive spectrographs as tiny red shifts and blue shifts in the star's emission ... The ELODIE spectrograph, installed at the Haute-Provence Observatory in Southern France in 1993, could measure radial velocity shifts as low as 7 m/s, low enough for an ...
Spectrometer - Spectrographs
... A spectrograph is an instrument that separates an incoming wave into a frequency spectrum ... There are several kinds of machines referred to as spectrographs, depending on the precise nature of the waves ... The first spectrographs used photographic paper as the detector ...
Stellar & Solar Spectrograph
... The first spectrographs used photographic paper as the detector ... sequence, Hubble's law and the Hubble sequence were all made with spectrographs that used photographic paper ... The plant pigment phytochrome was discovered using a spectrograph that used living plants as the detector ...
International Ultraviolet Explorer - History - Instruments
... for pointing and guiding the telescope, a high resolution and a low resolution spectrograph, and four detectors ... For this, it was equipped with two spectrographs ... They were called the Short Wavelength Spectrograph and the Long Wavelength Spectrograph, and covered wavelength ranges of 115 to 200 nanometres and 185 to 330 nm respectively ...
LAMOST - Optics
... tiled with fibre-positioning units, attached to 4000 fibres which transfer light to sixteen spectrographs below ... grey dome is an unrelated telescope), and the spectrographs are inside the right-hand column of the tower ... Each spectrograph has two 4k x 4k CCD cameras, using e2v CCD chips, with 'blue' (370-590 nm) and 'red' (570-900 nm) sides the telescope can also be used in a higher spectral resolution mode where the ...