Astrosurf - Astronomie
WEBAstrosurf est un site dédié aux astronomes amateurs, avec des forums sur l'astronomie générale, pratique, observation, astrophotographie, spectroscopie, solaire, etc. Vous y trouverez aussi des annonces de rencontres, de produits, de bric à …
C2A - Planetarium Software - Astrosurf
WEBC2A is a freeware planetarium software that allows you to build detailed views of stellar fields and access various catalogues and functions. It is only available for Windows and can be downloaded from the Astrosurf website.
Home [www.astrosurf.com]
WEBChristian Buil is a French amateur astronomer who shares his passion for spectrography on his home page. He presents his projects, observations, spectrographs, cameras and observational techniques related to solar and stellar spectroscopy.
C2A - Planetarium Software - Astrosurf
WEBSAO Catalogue The Smithsonian Astrophysical Observatory Star Catalog (SAO) is a star catalogue that reaches magnitude 11.9.It contains 258,997 objects. Hipparcos Catalogue C2A is also able to read the Hipparcos catalogue that gives positions, proper motions, BT and VT magnitudes as well as other information for 118,218 stars. It includes positions, proper motions, magnitudes BT and VT as well ...
Spectroheliograph - solar spectrum atlas - Astrosurf
WEBClick in colored spectrum or lines labels to get enlarged spectrum or type a wavelength value (in Å) in the upper textbox. The lower textbox shows the wavelength value corresponding to the mouse position. Click on colums of table for more informations. Solar spectrum profile extracted from Jungfraujoch data. Realization of a spectroheliograph.
Seeing and Turbulence - Astrosurf
WEBTurbulence. - Seeing and Turbulence -. Turbulence is a real limiting factor in High Resolution Astronomy. A 250 mm telescope is intrinsically able to provide a resolution of 0.5 arsec: this resolution cannot be reached because of the atmosphere turbulence, that behaves like time-varying random phase screen, destroying the image, like a bad ...
Spectroheliograph - spectroheliography with linear CCD - Astrosurf
WEBLearn how to use a spectroheliograph (SHG) to observe and photograph the Sun in different wavelengths. A SHG is a device that scans the solar disk with a spectrograph and a linear CCD sensor, and reconstitutes the image by juxtaposing the lines.
Galaxies and Quasars spectra - Astrosurf
WEBCastanet-Tolosan observatory - Date: February 30, 2012. 1247+267 spectrum. Celestron 11 telescope (D = 0.28 m) + LISA spectrograph at R = 800 (23 microns slit) + Atik313L+ CCD camera. Exposure : 8 x 600 s. Castanet-Tolosan Observatory. Some emission lines and associated rest wavelength are indicated.
aquarius.htm - Astrosurf
WEBAquarius, the Water Bearer, is the eleventh zodiacal constellations. Assumed to control rain and water, since ancient times it is surrounded by such sea creatures as Capricornus, Delphinus, Pisces and Cetus. Aquarius is a home to one of the closest planetary nebulae, Helix Nebula. Images of individual deep sky objects are accessible through the ...
Dispersion_en - Astrosurf
WEBDispersion_en. The atmospheric dispersion is an aberration introduced by the Earth's atmosphere generating a vertical deflection of light coming from any celestial body. This deviation is different as function of the wavelength: indeed, blue radiation is deflected more than red one, generating red stripe on one side of the observed object and ...