... A three-cell test section roughly representative of the primary mirror was provided for this test by the Steward Mirror Lab. ... Additionally, the tests are intended to determine relative airflow vs. pressure drop characteristics for each of the air flow patterns so the results can be evaluated both as a function of flow rate and of pressure drop along the flow path. ... The bottom (top as installed) was cut out so it could close the chamber for heating and be removed for the cooling tests. ...

... Analysis of the UVIS03 data show that the gain ratios, relative to the nominal 1.5 , are 1.01-1.04, 2.09-2.15, and 4.28-4.39 at a detector temperature of -82C. A check of the absolute gain of the nominal 1.5 setting was performed using flatfields from the linearity (UVIS05) test; gains were measured at 1.53, 1.52, 1.56, and 1.55, with errors 0.01 , for quadrants A,B,C, and D. Introduction The purpose of the ... Gain ratios for the four quadrants, relative to gain 1.5. ...

... Up: Data Analysis Applications . ... We present aspects of the Data Analysis of the Short Wavelength Spectrometer (SWS) on-board ESA's Infrared Space Observatory (ISO). The general processing from the raw telemetry data of the instrument, up to the final calibrated product is described. ... The data is checked for saturation, corrected for reset pulse after-effects, linearized (AC correction), cross-talk corrected and converted to voltages. ... fitting cosine functions to the RSRF corrected data . ...

... 05/09/2013 Galaxy Evolution over Five Decades - Cambridge 2013 Nuclear activity and environment Effect of environment on AGN is not completely clear yet. ... 05/09/2013 Galaxy Evolution over Five Decades - Cambridge 2013 Effect of the mass Mass slices ­ optical and radio AGN overall interaction one-on-one interaction relative location 05/09/2013 Galaxy Evolution over Five Decades - Cambridge 2013 Stratified study Stratifed study that considers several strata of mass. ...

... Archives . ... One realization of mine during the meeting was related to a cultural difference; therefore, there is no relation to any presentations during the 212th AAS in this post. ... I cannot cover all perspectives from both disciplines but I think there are two distinct fashions in practicing normalization. $$\frac{1}{N(\theta)}\int_{\Omega} f(x;\theta)dx=1$$ . ... This is my last posting on my first AAS . Tags: AAS , measure , measure theory , normalization , PDF , pmf . ... Chandra Blog . ...

... In Figures 2 and 3 we show the 6m telescope spectra of blue compact galaxies HS 1013+3809 and HS 1442+4250, in which typical high excitation HII-region narrow emission lines are seen. ... for red part of HS 1442+4250. ... This correction = 354 km s -1 was calculated for HS 1013+3809 and = 202 km s -1 for HS 1442+4250. ... While HS 1013+3809 looks very symmetric and very compact, with intense star formation burst taking place in its very center, HS 1442+4250 is well elongated, resembling edge-on disk...

... The dome was at 19.6 degrees za. an azimuth swing from an azimuth of 602.87 to 242.87 degrees in 60 degree steps with the dome at 10 degrees za. platform offset from AO9. The pitch, roll, and focus errors versus az and za. ... offset error ampltidue,phase . ... The plots show the pitch, roll, focus errors: . ... The vertical access is degrees for pitch and roll, and inches/10 for focus (.1 == 1 inch). ... The rms for the pitch fits are: pitch .013 degrees, roll .0085 degrees, and focus .1 inches. ...

ON THE IMPACT OF THE GALACTIC ABERRATION ON VLBI-DERIVED PRECESSION MODEL Z.M. MALKIN Pulkovo Observatory Pulkovskoe Ch. ... Corrections to adopted precession rate are usually computed from the linear trends in long-term time series of celestial pole offset (CPO), which are the differences between the measured and the theoretical coordinates of the celestial pole. ... CONCLUSIONS We have estimated the impact of GA on parameters of precession-nutation model derived from VLBI observations. ...

... Irregular, damped ULF range magnetic pulsations occurring in connection with magnetospheric substorms are called Pi 2 pulsations (T = 40 - 150 s; Saito, 1969). ... Since the waves can be detected with little time delay over a wide range of latitude and longitude, they have been used for the ground based determination of the substorm onset time. ... Lester, M., W. J. Hughes, and H. J. Singer, Polarization patterns of Pi 2 magnetic pulsations and the substorm current wedge, J. Geophys. Res., ...

Understanding Europa's Radiation Environment and How it Influences Landing Site Characterization G.W. Patterson, L.M. Prockter, C. Paranicas Applied Physics Laboratory Introduction · The surface of Europa is weathered by charged and neutral particles, micrometeroids, and photons. ... Background · Criteria for characterizing potential landing sites [e.g., Figueredo et al., ... 2004) Background · Criteria for characterizing potential landing sites [e.g., Figueredo et al., ... Figueredo et al., ...

initial data . mean 1990-2012 . mean 1970-2012 . PC 1 (1+2) mean . PC 2 (3+4) annual . ... PC 5 (9+10) 1/3 year . ... PC 4 (7+10) quasi-biannual . ... Sum of nine first PCs 2-10 without mean (1st PC) . Difference between the initial signal and ten first PCs 1-10 . ... Sum of ten first PCs 1-10 . ...

... Data Analysis SAS News What is SAS? ... The main scientific objective of my project was a pulse phase resolved spectral analysis of observations of the Crab pulsar with XMM-Newton. Moreover, a new method would be developed into how to combine data from different camera modes in order to achieve a optimal phase and space resolved spectroscopy of the Crab pulsar and nebula. ... Fig. 2: pulse profile of the Crab pulsar (over two phases) in blue (Burst mode data); . ...

... ESO is building what will be the World's largest optical telescope array, The Very Large Telescope (VLT). The VLT Project organisation is responsible for the design and construction of the Unit Telescopes, including enclosures, optics, adapter-rotators and coating unit. ... Unit Telescopes Overview - This page is outdated, an update is in process. ... Secondary mirror (M2 Unit) - This page is outdated, an update is in process. ... Coating Unit - This page is outdated, an update is in process. ...

... Can do almost everything that Miriad, AIPS and Difmap can plus more. ... Component Fluxes cont. ... Model fit to VSOP and ground- only VLBI data in Difmap ) Tasks, commands Miriad task Visibility plane model fitting Image plane model fitting Image plane integrated flux Uvfit, uvmodel Difmap command Modelfit AIPS task Uvfit, (slime) Aips ++ function image .fitsky, imagefitter (spatial), image .maxfit, image .fitprofile, imageprofiler image .statistics image .getchunk, ...

... October 6, 09:00 09:40 . Jorge Melnick (ESO) . ... We present a statistical and temporal analysis of the ground meteorological properties recorded at the five selected sites for hosting the European Extremely Large Telescope (EELT). ... Marc Sarazin (ESO) . The organization and development of the E-ELT site testing campaign by ESO are described. ... The E-ELT Site Testing activities in northern Chile and Argentina are reviewed, and pioneering explorative campaigns are illustrated. ...

IBIS Data Analysis . ... IBIS . ... Flat Fielding - Introduction . The images obtained by IBIS will have intensity variations across the field of view that are not due to the solar image, but rather caused by instrumental effects that alter the observed intensity in each point of the field of view. ... IBIS Flat Fielding Techniques . ... Therefore, it is desirable to obtain the flat field measurements center on a point along the equator near the heliographic center of the solar disk. ...

... The concepts of Fourier frequency and wavelet duration are obviously related. ... Among many sensible definitions, we chose to require that the peak of the wavelet mean spectrum should be matched with the singularity of the Fourier transform of the cosine wave. Then, it can be shown that the frequency of the cosine is related to the wavelet duration by the relation . ... The ambiguous definition of the duration of an event is common to the sizing of any object of irregular shape. ...

The beam pattern and the polarization characteristics . of the radio telescope RATAN-600 . The Mueller matrix elements was computed via formulas [1]: . ... The BP were computed by the aperture method, proceeding from the fild distribution in the aperture of the primary mirror. The components of the main and cross-polarization components of the electric field in the vertical aperture of the primary mirror was computed in Frenel diffraction approximation. ...

Microsymposium 38, MS083, 2003 (A4 format) MERCURY: LOCAL VARIATIONS OF THE PHOTOMETRIC RELIEF. ... Because of trajectory and pointing angle constraints the planet could be observed from Mariner 10 only over a small range of phase angles between about 75o and 110o. Therefore the photometric investigations are restricted to measuring the distribution of brightness on the Mercurian disk. ... Raw versions of real-time processing pictures FDS 0000984 and FDS 0000986 were used (images 196 and 202). ...

My research interests are focussed on the theory and modelling of accretion processes as well as star and planet formation mechanisms. I am particularly interested in the stability properties of accretion discs, the generation of MHD turbulence and associated angular momentum transport, disk - planet interactions and the origin and characteristics of jets and winds from accreting systems . ... These results have been published in Salmeron & Wardle, 2005, M.N.R.A.S., 361: 45-69. ...