Subreflector Gain Characteristics . ... Subreflector is modeled as a circular parabolic reflector with various focal lengths. Focal Length chosen for original design is 136 feet. The depth of the parabolic reflector can be found from the following formula: . Depth = Diameter ^2 / (16 * Focal Length) . Diameter of Subreflector at widest is 370.4 feet. That is used here for the circular parabolic reflector. Focal Length (ft) . Subreflector Depth (ft) . ... 136 . ... 150 . ...

The AstroGuide . ... AstroGuide | ... AstroGuide Listing . ... See many more Astronomy Listings by: Category or Alphabet . ... Listed Since October 22, 1998 . ... 203) 484-7705 . ... 203) 484-9016 . Web Site . ... Web . www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... Solar radiometer at Potts Hill . This shows a 1-m diameter equatorially-mounted, motor-driven parabolic antenna at the Potts Hill field station first built to observe the 1948 November 1 partial solar eclipse at 10cm. ... This antenna has a beamwidth of 6 degrees. Image caption provided by Wayne Orchiston, Miller Goss and Jessica Chapman.) ... Image Credit: CSIRO Radio Astronomy Image Archive. | archive | ... today * ATNF | ...

... Astrophysics Group . ... MRAO Telescopes . ... A radio telescope consists of one or more directional receiving aerials connected to very sensitive amplifiers. Since radio wavelengths range from millimetres to about 10 metres, the actual form of the aerials can vary greatly; many are parabolic dishes with very precise surfaces, while others, like the Cambridge Low-Frequency Synthesis Telescope (right), are similar to television aerials. ... Information provided by webmaster@mrao.cam.ac.uk . ...

... Telescopes . ... Superb optical performance coupled with time proven computerized pointing and tracking has made the LX200 ACF series a best-seller in the high-performance telescope class. ... LightBridge Series . ... LightBridge Mini Series . ... Meade's all new LightBridge Mini series. ... Whether you are camping in the outdoors or relaxing in your backyard, this LightBridge Mini Dobsonian is the ideal grab-and-go telescope, offering easy and portable observation with its removable optical tube. ...

... Sometime early this year, Jeremy Drake asked this innocuous sounding question in the context of determining the bounds on the amplitude of an absorption line: Is the 3sigma error bar the same length as 3 times the 1sigma error bar? In other words, if he measured the 99.7% confidence range for his model parameter, would it always be thrice as large as the nominal 1sigma confidence range? ... That о‡^2 function does not explain the error of the parameter estimator unless the model is linear. ...

... ОБ ОТДЕЛЕ . ... Лукаш В.Н., Михеева Е.В. 'Физическая космология' М: Физматлит, 2010. ... Doroshkevich A., Verkhodanov O. 'CMB component separation in the pixel domain', Phys. Rev. D, vol. 83, id 043002, 2011 г. 4. ... Demianski M., Doroshkevich A.G., Pilipenko S.V., Gottloeber S. 'Simulated evolution of the dark matter large scale structure', MNRAS, 414, 1813-1826, 2011 г. 8. ... Комберг Б.В., Ермаш А.А., 'Морфология и эволюционный статус активных галактик типа NLSyI', Препринт ФИАН ?31, 2011 г. 14....