Atmospheric transparency in the optical and near IR range above the Shatdzhatmaz summit O.Voziakova (Sternberg Astronomical Institute, Russia) Atmospheric extinction in the MASS spectral band Atmospheric transparency in near IR range Example of a good photometric night. ... Distribution of atmospheric extinction in MASS Median = 0.23 mag 1-st quartile = 0.20 3-d quartile = 0.27 mag Vertical green line represents theoretical Rayleigh extinction for Shatdzhatmaz (0.16 mag). ...

VISTA Data Flow System : Overview Jim Emersona , Mike Irwinb, Jim Lewisb, Simo n Hodgkinb, Dafydd Evansb, Peter Bunclarkb, Richard McMahonb, Nigel Hamblyc ... Astronomy, School of Physics, Universit y of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh, EH9 3HJ, UK d Nat ional e- Science Centre, 15 South College Street, Edinburgh EH8 9AA, UK e UK Astronomy Techno logy Centre, Royal Observatory, Blackford Hill, Edinburgh ... The system name adopted was the VISTA Data Flow System (VDFS). ...

... At the January meeting we finally achieved the necessary quorum in the vote on the bylaws changes proposed in September. ... Giant Ribbon at Edge of the Solar System: Mystery Solved? ... It is where solar wind particles heading out into interstellar space are reflected back into the solar system by a galactic magnetic field." ... Particles from the solar wind that escape the solar system are met ~100 astronomical units (~15 billion kilometers) away by an interstellar magnetic field. ...

... 000, 1­12 (2009) Printed 11 February 2010 A (MN L TEX style file v2.2) Analytical approximations of K -corrections in optical and near-infrared bands I1gor V. Chilingarian1 2 ,2,3 , Anne-Laure Melchior 1,4 and Ivan Yu. ... Received 2010 February 01; in original form 2009 August 14 ABSTRACT To compare photometric properties of galaxies at different redshifts, the fluxes need to be corrected for the changes of effective rest-frame wavelengths of filter bandpasses, called K -corrections. ... Table 1. ...