dark sky expedition StarChile 2010   :   CCD and visual observations


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), ...


20100405 - San Pedro - CG5 0.20-m refl - MD 20100404 - San Pedro - SPACE Atacama Lodge 20100415 - San Pedro - volcano Licancabur

20100414 - San Pedro - CCD observation - MD - 30s exp 20100414 - San Pedro - Octant - 300s exp 20100414 - San Pedro - Jupiter and zodiac - 300s




CCD observations

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.


  • V775 Cen / 2 nights / 5.1 hours / VRI / 2 minima timings (6)

  • V777 Cen / 3 nights / 18.5 hours / VRI / 1 minima timings (3)

  • V901 Cen / 3 nights / 18.5 hours / VRI / 4 minima timings (12)

  • GM Nor / 9 nights / 46.5 hours / VR / 2 minima timings (4)

  • EN Oct / 2 nights / 20.8 hours / VRI / 5 minima timings (12)

  • AO Vel / 3 nights / 14.1 hours / VRI / 0 minima timings (0)

  • ASAS J155227-5500.6 Nor / 4 nights / 29 hours / VR / 6 minima timings (12)

  • ATACAMA1 Nor / 8 nights / 42.1 hours / VR / 9 minima timings (13) / new discovered eclipsing binary (EW type)

  • ATACAMA2 Cen / 3 nights / 18.5 hours / VRI / 6 minima timings (18) / new discovered eclipsing binary (EW type)

  • ATACAMA3 Vel / 3 nights / 14.1 hours / VRI / 2 minima timings (5) / new discovered eclipsing binary (EW type)

  • ATACAMA4 Vel / 3 nights / 14.1 hours / VRI / 2 minima timings (3) / new discovered eclipsing binary (EW type)


    The times of minima has been published in the database of Variable Star and Exoplanet Section of Czech Astronomical Society.




    visual observations

    Visual observations of comets has been made by Martin Lehký at SPACE Atacama Lodge using a small 0.08-m f/7 (x19) refractor ED80.


  • comet 81P/Wild 2 - 15 observations (9.6 -> 9.8 mag.)

  • comet C/2009 K5 (McNaught) - 15 observations (8.4 -> 8.1 mag.)

  • comet C/2009 R1 (McNaught) - 10 observations (10.3 -> 9.9 mag.)




    Martin Lehký / makalaki@astro.sci.muni.cz / Hradec Králové / Czech Republic   &   Dalibor Hanžl / Brno / Czech Republic
    created 22nd June 2010 / update 07th October 2012