... Posts tagged ?Bayes factor? ... ArXiv] 4th week, May 2008? ... Category: arXiv , Bayesian , MCMC , Stat | ... Category: Algorithms , arXiv , Bayesian , Data Processing , Frequentist , Objects , Quotes , Uncertainty | ... Algorithms arXiv Astro Bad AstroStat Bayesian CHASC Cross-Cultural Data Processing Fitting Frequentist Galaxies gamma-ray High-Energy Imaging Jargon Job Languages MC MCMC Meta Methods Misc News Nuggets Objects Optical Physics Quotes Spectral Stars Stat Timing Uncertainty X-ray . ...

... 8, ``Celestial Mechanics'', 2002 First results of GPS orbit determination with GRAPE package using a square--root information filter M. O. Keshin Institute of Applied Astronomy, St. Petersburg, Russia The zero--differenced carrier phase measurements contain the distance be­ tween the phase centres of receiver and transmitter antennas biased by unknown integer number of cycles (phase ambiguities). ... In the case of GPS the problem of solar radiation pressure modelling is of primary importance. ...

... click image to view discuss) . ... Submitted by Mario Motta M.D. on 10/17/2015 20:54:15 . ... optical diagram of the relay telescope . ... widefield image . ... Submitted by Mario Motta M.D. on 01/04/2016 23:03:07 . ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

... In this paper we have discussed a technique for the simultaneous estimation of the unknown object and system aberration-parameters from data acquired by the Hubble Space Telescope. ... In contrast with other approaches in which the spatial values of the point-spread function are estimated, with our approach the aberration parameters are estimated. This makes the technique directly applicable to situations in which the aberration-induced point-spread function is spatially varying. ...

Next: Image sampling Up: Computational Methods Previous: Computational Methods . It is important to understand the basic properties of the data which are being reduced since most computational techniques make implicit assumptions. The result of an algorithm may depend on things such as sampling and noise characteristics of the data set. Furthermore, the most common methods for estimation of parameters are discussed in this section. Image sampling . ... Tue Mar 28 16:52:29 MET DST 1995 ...

. The XMM-Newton website has moved to the following location: . http://www.cosmos.esa.int/web/xmm-newton

From: antunes@xeno.gsfc.nasa.gov (Sandy Antunes) . Subject: BOF: Scheduling/Pipelines, Tuesday Sept 16, 16:45-18:00 . ... Put simply, this will focus on getting from text proposals to binary data for satellite telescopes and spectroscopic missions. Scheduling, echelle data reduction, AI, modeling, archiving, and other issues will be discussed. ... And, people who work in satellite planning and operations should definitely attend to listen to the community's needs. ... Sandy . ...

... The most precisely determined characteristic for accreting neutron stars (NS's) is their period. ... Period changes show fluctuations. ... Some applications of stochastic processes in astrophysics especially in accreting systems were discussed in Lipunov (1987),Hoshino Takeshima (1993) and Lipunov (1992).In Hoshino Takeshima (1993) the authors, using simple models of MHD turbulence, try to explain aperiodic changes in X-ray luminosity of X-ray pulsars. ... Here, -constant angular momentum. ...

Next: Results & Discussion Up: Coronal Hole Diagnostics out Previous: Introduction . ... The dates of the observations discussed here, their locations, pointing, slit sizes and exposure times are given in BTDW. ... Line fits are given by the dotted line. ... An estimation of the errors in the derived parameters was obtained using the GA-derived parameters as an input for a ``classical'' IDL-CURVEFIT procedure (Peter, 1999; Peter & Judge, 1999). ...

On Systematic Differences in Individual Solutions and IERS Products Zinovy Malkin Institute of Applied Astronomy RAS, St. Petersburg, Russia 1 Present status Proper determination, modelling, and accounting for systematic differences between contributed series is of the great importance in compilation of the IERS products. ... Possible sources of systematic differences are: · Different reference systems (e.g. TRF, CRF, geopotential, time scale). ... 87 IERS Technical Note No. ...

... Jitter imaging (also known as microscanning ) is probably one of the most efficient ways to perform astronomical observations in infrared. ... This paper discusses the various issues attached to each data processing step and offers several algorithms, having in mind an automatic data processing in pipeline mode (i.e. without user interaction) as intended for the VLT. ... Poisson offset generation . ... Frame offset detection . ... Peak detection algorithm . ... Header offsets . ... Linear average . ...

... Bad Astronomy . ... Bitesize Astronomy . ... Bad Astro Store . ... Site Info . ... It is from from Voyager 1 and shows a whopping big impact crater dominating the profile of the moon. Note that Mimas is about 400 kilometers across (about 250 miles). ... The wall around the crater is 5 kilometers high, and that central peak rises 6 kilometers above the surface (many impact craters have a large central peak which is caused by a pressure rebound from the impact). ... 2008 Phil Plait. ...