The problem of measuring the surface accuracy of a large reflector antenna is not simple. ... Using the Fourier relationship connecting the shape (and phase) of the radiation pattern and the antenna illumination function, a measurement of the former can be used to infer the latter. ... We have performed three set of measures on the CNR-IRA 32-m radio telescope (image) . 1988: Measurements using Misell phase retrieval algorithm, and the 22 GHz Orion water vapor maser as a reference source. ...
... The computer control systems and the data analysis software tools are being developed simultaneously and are used with the mock-up hardware to simulate the data acquisition process. ... Software which handles the commissioning tasks, engineering analysis, and data processing are being developed in the AIPS++ system. ... Here we give some examples of the software being developed and we show some of the tools available in the AIPS++ programming and analysis environment. ...
Next: RELATED WORK Up: INTRODUCTION Previous: INTRODUCTION . ... In 1985, Grossman and Paulgrossmann-paul rigorously formulated some of these important ideas in terms of affine canonical coordinate transformations to a coherent space representation. ... In 1989 and early 1990, we formulated the chirplet transform, a multidimensional parameter space whose coordinate axes correspond to the pure parameters of planar affine coordinate transformations in the time-frequency plane. ...
... Regional planning meeting for the Balkan and Black Sea | ... Proposals for a web site of the Regional Network - Information on regional and global activities - Proceedings of this Meeting - Space Weather Alerts for the public - Form for submitting research and observational proposals - Database of scientific data publicly available - Greece provides solar telescope data - Romania provides data on active regions studied with helioseismis holography - Armenia provides access to...
... Ipatov A.V., Majorova E.K., Korolkov D.V., Nizhelskij N.A., Timofeeva G.M., Stotskij A.A.. The antenna noise temperature of RATAN-600 radio telescope - analysis and possibility its decrease. XXII All-Union radio astronomical conference. Abstracts reports, Erevan, 1978. ... ХIV All-Union radio astronomical conference. ... Majorova E.K., Nizhelsky N.A., Trushkin S.A., Tsybulyov P.G. The noise temperature and the effective area of RATAN-600 radio telescope equipped with anti-noise screens. ...
... Journal of the Amateur Astronomers Association of New York December 2015 V olume 64 Number 12; ISSN 0146-7662 Our Solo Sun Stranded without Star Siblings AAA LECTURE SERIES By Rafael Ferreira Double-sun planets like Tatooine from Star Wars are no longer the stuff of science fiction thanks to Kepler. ... Yes, the gravity that you experience on Earth every day is the key component to making stars. ... Disk fragmentation usually occurs for stars with 10 or more solar masses. ...
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