Collimation Cassegrain ASA/Keller
The ASA/Keller Cassegrain had been collimated by taking advantage of the Gryzbowski collimator, a Chesire collimator, a barlowed Laser collimator (adjustment of secondary mirror) and finally by a real star test at the sky (adjustment of primary mirror)...
Gryzbowski colli centralized on Secondary...
4 LED projection around Secondary Centercross
Chesire view
Startestpattern extrafocal
The intrafocal pattern of the star test looked equal to the extrafocal one ;-)
The seeing this night, at 20 degrees, was not 'optimal' but good enough to finish the adjustment of the primary mirror.
Io verschwindet im Schatten von Jupiter. Während der ganzen Nacht ideale Bedingungen für die Deep-Sky-Beobachtung. Mehrere Überflüge der Internationalen Raumstation ISS am Abendhimmel. 
Ferngläser, auch Feldstecher genannt, sind exzellente und universell einsetzbare Beobachtungsgeräte. Sie sind im Vergleich zu einem Teleskop klein, kompakt und lichtstark. 
As Vega?s development is coming to an end with the qualification flight scheduled in 2011, two contracts were signed to allow the project to move on to the next phase. 
ESA?s GOCE gravity mission has recovered from a glitch that prevented the satellite from sending its flow of scientific data to the ground. News of the recovery comes earlier than expected, thanks to the fervent efforts of a team of experts.