... Lucas (2000) also mentions the possibility of using the 183 GHz Water-Vapour Radiometers (WVRs) to correct for the emission. A correction based on the WVRs would largely remove the noise due to atmospheric emission, but would also add thermallike noise due to the noise within the radiometer itself. ... 125 100 K /m m K /m m 3 CORRECTING ALMA TOTAL-POWER OBSERVATIONS Each of the 12-m ALMA antennas will have a 183 GHz water vapour radiometer fed from the centre of the focal plane of the antenna. ...
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Ссылки http://www.mrao.cam.ac.uk/~bn204/mk2/publications/2009/tpower-v01.pdf -- 180.9 Кб -- 25.11.2009 Похожие документы
... Tonight's Sky . ... Observing . ... Astronomy for Kids . ... Sky Guide . ... Amateur astronomers image a rare glow . ... Amateur astronomers Arto Oksanen, Petri Kehusmaa, and Caisey Harlingten, on behalf of Searchlight Observatory Network (SON), reported imaging an optical afterglow from a gamma-ray burst (GRB). ... Only registered members of Astronomy.com are allowed to comment on this article. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email...
... My mother had a 'star named for me' with the International Star Registry (henceforth ISR) as a gift for this Christmas. ... On the back of the chart, a sticker described the precise location and visual magnitude of the star, taken from the Hubble Guide Star Catalog. The first thing I noticed, was the chart was Epoch 1950. ... The coordinates were also exactly those on the ISR sticker, so I now knew that even though the ISR chart was epoch 1950, the coordinates on the sticker were epoch 1983. ...
... We quote the 2 per degree of freedom of the best fitting line and the significance of the fit for each regression in Table 4. ... 43 Table 2--Continued Exp eriment Ref. eff m in max T obs ± obs eff a c Publication Date (yrs) 2001.2 2001.2 2001.2 2002.4 2002.4 2002.4 2002.4 2002.4 2002.4 2002.4 2002.4 2002.4 2002.4 2002.4 2002.4 2002.4 2002.4 2002.4 2002.4 2002.4 2002.4 2002.4 2002.4 2002.4 2002.4 2002.4 2002.4 2002.4 2002.4 2002.4 2002.4 ...
... Structural Analysis of Disk Galaxies of the NGC 524 Group M. A. Il'ina and O. K. Sil'chenko * Sternberg Astronomical Institute, Lomonosov Moscow State University, Moscow, Russia Received February 24, 2012; in final form, March 2, 2012 Abstract--Members of the NGC 524 group of galaxies are studied using data obtained on the 6m telescope of the Special Astrophysical Observatory of the Russian Academy of Sciences, with the SCORPIO reducer in an imaging mode. ... NGC 502. ... NGC 524. ... Rev. Astron. ...
... Brian reported that the new computer was installed at the observatory. ... Rex's club highlights were: 1) mention of the Washington Crossing observatory and its public outreach programs, availability to club members if a keyholder is present and introduction of Gene Ramsey an Brian Van Liew observatory co-chairs; 2) a brief mention that new keyholder training will take place this fall and to contact Brian for details, also acknowledgement that member Larry Kane completed the ...
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Ссылки http://www.princetonastronomy.org/newsletters/10_2004sidereal.pdf -- 550.4 Кб -- 05.10.2004 Похожие документы