Dark sky expedition StarChile 2010 of group +8mag took place in SPACE Atacama Lodge (68o 10' 45.29" W and 22o 57' 12.94" S, 2422 m) near San Pedro de Atacama in the chilean Andes from April 02nd till April 25th 2010. Almost every night we had excellent observing conditions and we spent a lot of time under the dark southern sky. In April there was beautiful constellation of Sagittarius and Scorpius just in the zenith. Together with Milky way they spread across the whole sky from Cygnus up to majestic Velas and Carina. Astronomical goals of expedition were various: visual observing of dee-sky objects, comets, photographing by wide-angle objective and CCD photometry of variable stars (eclipsing binaries). During the days we also visited many interesting places: Paranal observatory, meteor crater Monturaqui, copper mine Chuquicamata, pre-Columbian archaeological site Pukara de Quitor, Geiseres del Tatio, Salar de Atacama, Laguna Chaxa - Los Flamencos National Reserve, and some of us climbed up volcano Cerro Toco (5604 m), ...

CCD observations of variable stars (eclipsing binaries) has been made by Martin Lehký and Dalibor Hanžl at SPACE Atacama Lodge using a 0.20-m f/4 reflector and SBIG ST-8 CCD camera with BVRI filters (field of view 59' x 39' and 2.3" x 2.3" / 1 px). The images were acquired with SBIG CCDSoft V5.00 and subsequently were processed using C-Munipack V1.1.26. Acknowledgments belongs to Dr. Marek Wolf (Astronomical Institute, Charles University, Prague) for borrowed CCD camera ST8, Variable Star and Exoplanet Section of Czech Astronomical Society for borrowed mount CG-5 and Astronomical Society at Hradec Králové for borrowed old notebook with parallel port.