... A non-linear relationship is observed between the sky brightness on clear and overcast nights, with a change in behavior near the rural to urban landuse transition. ... The great variation in skyglow radiance observed from site-to-site and with changing meteorological conditions underlines the need for a long-term international monitoring program. he introduction of artificial light has caused an unprecedented disruption to the nighttime environment over large areas of the Earth. ... Data processing...

... Schools . ... V.N. Karazin Kharkiv National University is one of the oldest universities in Eastern Europe. ... In October 1999, according to the decree of the President of Ukraine, Kharkiv State University gained the status of a national university and was named in honor of its founder, V.N. Karazin. ... V.N. Karazin Kharkiv National University is involved in extensive international cooperation and is an active member of the international community of the leading European and world universities. ...

T HE V I www.vista.ac.uk V ISTA'S ISIBLE & NFRARED S UR VEY T ELESCOPE FOR A STRONOMY .R 1.65DEGREE DIAMETER INFRARED FIELD OF VIEW FEEDS A APID DEEP IR 4- METRE PRIMARY MIRROR AND MEGAPIXEL OBJECTS FOR FOLLOW-UP WITH VLT, AND DIRECTLY STUDY A WIDE VARIETY OF ASTRONOMICAL TOPICS (0.34 PIXEL ) CAMERA (0.85­2.3µm) 64 IMAGING SURVEYS WILL BOTH SELECT . ... As an ESO telescope, VISTA and its large surveys will now be fully exploited by the whole ESO community. ... VISTA Figure 9: Telescope support base. ...

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