... 2 Measurement of PMTs counting characteristics and selection of op erating p oint To select the operating point of the PMT, that is the optimal values of the high voltage supply and pulse discrimination threshold, the command run counting=hv value is provided in the program mass. ... Starting with the minimum voltage (say 550 V) run command run counting=550 for the measurement execution. ... It is recommended to take measurements for the set of values of 0.4, 0.6, 0.8, 1.0. ...
VISTA Telescope Mount Factory testing prior to optics integration Paul Jeffers*a, Brian Stobiea, Stan Hermannb, Brad McCreightb a UK Astronomy Technology Centre, Royal Observatory, Blackford Hill, Edinburgh, EH9 3HJ, UK b VertexRSI General Dynamics C4 Systems, 1217 Digital Drive, Richardson, TX 75081, USA ABSTRACT VISTA1 is a survey telescope which will deliver 0.5 arc second images over a 2 degree diameter unvignetted field of view. ... Thermal affects during the period of the test. ...
... Properties of Stellar Populations in Isolated Lenticular Galaxies I. Yu. ... The resulting average ages of the stellar population in bulges and discs fill an entire range of possible values from 1.5 to 15 Gyr which indicates the absence in the isolated lenticular galaxies, unlike in the members of groups and clusters, of a certain epoch when the structural components are formed: they could have been formed at a redshift of z > 2 as well as only several billion years ago. ... 69 NGC 2350 No. ...