Next: Reducing 12-mm ATCA observations Up: Combining Mosaics and Single Previous: The Non-Linear Method - . Here we describe two ad hoc methods of combining single-dish and mosaic images. ... where and are the beam volumes of the synthesised mosaic beam and the single-dish beam respectively). ... If both the interferometer primary beam and the single-dish beam are gaussian forms with widths and respectively, then you will want to add a gaussian to the mosaic beam dataset which has a width . ...

... The parameter pgdev allows the user to specify a pgplot device, but, in contrast to the pgplot standard, the file name should not be included, but instead supplied via the parameter plotfile . ... To write a colour postscript file called op.ps: pgdev=/cps plotfile=op.ps . However note that at present, if a colour postscript device ( pgdev = `/cps'), a fits file ( pgdev = `/fits') or a ppm file ( pgdev = `/ppm') are selected, the task in fact bypasses pgplot and writes the postscript file directly. ...

N. Zhukavets Faculty of Electrical Engineering, Czech Technical University in Prague Prague, Czech Republic natalia@math.feld.cvut.cz Free Malcev and alternative sup eralgebras on one o dd generator (Joint work with I.Shestakov.) ... 5] I. Shestakov, N. Zhukavets: The Malcev Poisson superalgebra of the free Malcev superalgebra on one odd generator, J. Algebra and its Applications, 5(4) (2006), 521­535. ... 7] I. Shestakov, N. Zhukavets: The free alternative superalgebra on one odd generator, Internat. ...

. This is the CIMA alternative drift map menu: . The following is the on-line help page for alternative drift map: . You can return to the main CIMA page by clicking here .

Blackholes Forum Message . Forums: . ... Alternative Idea . ... With the proposal of exotic super dense entities like quark stars and others including black holes, matter on the atomic level can, and most likely does, break down to its most simplist building blocks (photons, leptons, quarks, etc). ... www.astronomy.net . About Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... Determine the net instrument response desired. ... Use a numerical algorithm, the convolution network (discussed in detail below), to search for the solution that provides the desired mapping of the observed data to the desired form. ... We first made preliminary studies investigating recovery of images that have been broadened by the HST's mirror by modeling its PSF as shown in Fig. ... Our recovery procedure was applied also to spectral data, in this case to a tunable diode laser (TDL) spectrum. ...

Next: Sky Subtraction Up: Construction of Flat Previous: Standard construction . For a number of projects where very deep integrations and accurate flat fields are required, and the targets are point sources or much smaller than the frame size, the sky background itself can be used to calculate the flat field. ... Use STATISTICS/IMAGE to calculate the image median, and COMPUTE/IMAGE to divide by this to get the normalised flat field. ...

. Sergei and keyboard, photo by A.Yuferov .

An improved correlator for ALMA has been proposed by an European consortium including Astron (NL), Bordeaux University (FR), IRAM (FR) and Arcetri. ... The work in Arcetri has focused on the efficent design of a digital receiver, that exploits the peculiarities of the astronomical signal, i.e. the extremely coarse quantization and the stochastic nature of the input signal. ... A complex mixer followed by a two stage bandpass filter. ... Phase effects in a hybrid correlator . ...

... We have been upgrading the software front-end to WASP (Wideband Autocorrelating SPectrometer, operating from 800 to 4000 MHz) from Lynx-OS to Real-Time Linux and will discuss Real-Time software aspects. We are using a standard parallel ``PIO'' card to receive data from the spectrometer and standard GPIB interfaces that drive a frequency synthesizer for bandpass calibration. WASP and its front-end computer are fully mobile and can be taken to any suitable radio telescope. ...

... Posts tagged ?MCMC? ... There were a few more with chi-square fitting and its error bars but excluded. Continue reading ?[ ArXiv] 4th week, Jan. ... Category: arXiv | Comment . ... This is not dissimilar to the problem of determining the significance of a ?feature? in an image (Connors, A. & van Dyk, D.A., 2007, SCMA IV). ... 2007? ... Category: arXiv , MC , MCMC , Methods | ... Category: Bad AstroStat , Data Processing , Fitting , Frequentist , Methods , Spectral , Stat , Uncertainty | ...

... Print Mixed messages with work in progress about the universe Simon Grose DISRUPTIVE alternative views that anger a current orthodoxy, leave their proponents ostracised and intrigue the masses are part and parcel of science. ... Another correct alternative theory earned Western Australia's Barry Marshall and Robin Warren a Nobel Prize in 2005. ... Scepticism about global warming being caused by our fossil-fuelled emissions is headed the same way, but it's a journey yet to be completed. ...