... astro-ph . ... Whitespace-separated words are treated as AND ed. Show 10 50 100 articles per page in Full Compact mode . ... Quasar Variability in the Framework of Poissonian Models . ... It is shown that in this very general framework the well established anti-correlation between variability amplitude and wavelength can only be understood as an effect of an underlying spectral component which remains stable on long time-scales, and is redder than the variable component. ...

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Optical/IR infrastructure priority setting process The Town Hall community meeting agreed that the "base" component of Gemini (i.e. the current 6.19% + Aspen program) is the community's highest priority, and that it should be wholly funded under NCRIS (i.e. without the LIEF or university contributions of the present arrangement). ... Infrastructure funded through NCRIS should serve the research and innovation system broadly, not just the host/funded institutions. ...

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• casacore: components/SpectralComponents/SpectralEstimate.h Source File
• Two-component models: crust and superfluid
• casacore: components/SpectralComponents/SpectralList.h Source File

The Yarkovsky Effect in the Motion of NEAs . ... In this paper we evaluate the Yarkovsky effect on the motion of NEAs under the assumption that this acceleration depends on heliocentric distance as 1/r 2 and is characterized by the transverse component 2 in the orbital coordinate system. ... In some instances the Yarkovsky effect can be estimated by using only optical observations. Accounting for the Yarkovsky effect permits to include more optical observations in the orbit fitting process. ...

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• Keywords_129
• Keywords_152

The ESA/ESO Astronomy Exercise Series 2 . The Distance to Messier 100 as Determined by Cepheid Variable Stars . ... The small variations in distance to the individual Cepheid variable stars in the Cloud are negligible compared with the much larger distance to the SMC. ... In this way Cepheid variable stars can be used as one of the 'standard candles' in the Universe that act either as distance indicators themselves or can be used to calibrate (or set the zero point for) other distance indicators. ...

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• ASP: Simple Effective Education and Dissemination (SEED) Grants For Astronomy
• ASP: Past Pricilla and Bart Bok Award Winners
• ASP: A Flag for Mars

An example of galaxy that shows a double-component structure in the HST/ACS image. North is up and east is left. ... The thumbnails of the HST/ACS I band (effective wavelength = 814 nm), the Subaru Telescope/Suprime-Cam NB711 and i'- and z'-bands are shown from left to right. Note that the NB711 image, which captures the Lyman-alpha line emitted by neutral hydrogen, shows spatially extended gas which is ionized by ultraviolet (UV) radiation from many massive stars. ...

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• http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7BAA2BF042-82E2-49BD-B02D-2C23657E1381%7D
• http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7B24C48B52-8523-48C7-9C70-70BB5CA416F9%7D

Next: Polarization efficiency: size/shape/orientation effects Up: Optical properties of cosmic Previous: The 2175? feature . To model the interstellar polarization one needs to calculate the forward-transmitted radiation for an ensemble of non-spherical aligned dust grains. ... Let non-polarized stellar radiation passes through a dusty cloud with a homogeneous magnetic field. ... The angle between the line of sight and the magnetic field is ( ). ... where the angle is connected with and ( ). ...

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• Extinction properties (transmitted radiation)
• Linear polarization: wavelength dependence
• Polarization efficiency: size/shape/orientation effects

... The SDSS 2.5-m primary mirror is supported in a manner similar to the Apache Point Observatory 3.5-m telescope primary. ... The axial support is provided by 48 air pistons. The pistons have the same diameter thereby applying equal forces with the same air pressure. ... Each group supports a 120њ sector of the mirror. ... Figure 1: CAD drawing showing the 2.5-m primary mirror and the locations of actuators (green circles) These actuators apply forces (10*cos2 N) to correct astigmatism. ...

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• Telescope Parameters
• Procedure for Part Numbering Convention: Larry Carey, 2005
• Telescope Tracking Smoothness

Marc White . ... Turbulent entrainment processes may play an important role in the outflows from young stellar objects at all stages of their evolution. In particular, lateral entrainment of ambient material by high-velocity, well-collimated protostellar jets may be the cause of the multiple emission-line velocity components observed in the microjet-scale outflows driven by classical T Tauri stars. ... University of Amsterdam; STARPLAN, Copenhagen, Jul 2013 . ... E marc.white@anu.edu.au . ...

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• Richard Woolley and Jim Banham inspecting optical and mechanical components,
• Emma Kirby - Science
• GSAOI Component Supplier Links Page

... Archives . ... The PCA and ICA is used for separating mixed components with some assumptions. ... The need of source separation methods in astronomy has led various adaptations of decomposition methods available. ... I rarely come up with a paper which gathered and summarized component separation methods applicable to astronomical data. In that regards, the following paper seems useful to overview methods of reducing dimensionality for astronomers. [arxiv:0805.0269] . ... Chandra Blog . ...

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• The AstroStat Slog component separation
• Evolutionary Effects
• The AstroStat Slog flux

... HI mass fractions Comparison samples HeViCS bright galaxy Catalogue(BGC) Davies+2012 Average scaling relations for HI-normal and extremely HI-deficient galaxies in H3 survey (Gavazzii+ 2013 ) Dwarf galaxy survey (DGS) Madden+ 2013 KINGFISH Kennicutt 2011 Specific star formation rates Schiminovich +2007 Comparison samples HeViCS bright galaxy Catalogue(BGC) Davies+2012 Dwarf galaxy survey (DGS) Madden+ 2013 KINGFISH Kennicutt 2011 Dust ...

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• http://www.arcetri.astro.it/radtran/talks/lhunt.pdf
• IBIS - Installation
• Microwave components: few tests

... Hartmann Test Using a Screen With Four Holes 2 Hartmann test with four holes screen The theoretical concept of the primary aberrations measurement by four apertures Hartmann test introduced by "Malacara" * and "SalasPeimbert et. al. ... Black curve show the calculated coefficients for phase screens which have 8 modes of Zernike aberrations and red curve show the calculated coefficient for original phase screen. (a) astigmatism 45 (b) astigmatism 090 14 Coma Coma modes of Zernike aberration. ...

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... It includes level converters and a optional radio modem designed to decode the radio timecode signals transmitted by the Canadian time and frequency station CHU. A complete set of schematics, PCB artwork, drill templates is in the pub/ntp/gadget.tar.Z file on ftp.udel.edu. ... One of these converts a TTL positive edge into a fixed- width pulse at EIA levels and is for use with a timecode receiver or oscillator including a TTL PPS output. ... See the schematic diagram gadget.s01 for reference. ...

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• APOD: 2014 July 21 - Spacecraft Rosetta Shows Comet has Two Components
• Medium
• Creating a watermark effect

Cosmic Ray laboratory of . ... Neutron Monitor (Cosmic Ray Observations) . is situated in Irkutsk (Russia) . ... Height - location above sea level . ... Height: . ... For recording the CR (Cosmic Rays) neutron component at Irkutsk, . neutron monitor NM-64 is used, which is an installation with 18 two-meter proportional counters filled with BF 3 (boron trifluoride gas) in which the B 10 90 per cent of the total boron. ... The neutron monitor is located at 475m above sea level. ...

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To main of Laboratory . The research work and design of optical and optical-electronic devices are carries out by laboratory staff: . ... Lens: . ... In the layout 1 prism systems perform functions of dispersive element, corrector of aberrations, optical reducer. ... Spectral range 200 - 400 nm; . ... Back Forward . ... The main corrector's function are compensation of field aberrations of the main spherical mirror of a telescope (diameter of 600 mm, f'=1200 mm) and increase aperture ratio. ...

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... OEM COMPONENTS . ... OEM OPTICAL COMPONENTS . ... Objective, Plan Achromatic, 4 X 0.12, BF . ... Objective, Flatfield Achromatic, 20 X 0.40, BF . ... Objective, Flatfield Achromatic, 60 X 1.00-0.70, Oil, Iris, BF . ... Objective, Flatfield Achromatic, 100 X 1.25, Oil, BF . ... Q-Plan™ Achromat Objective, 2.5 X 0.08, BF . ... Q-Plan™ Achromat Objective, 50 X 1.0-0.70, oil, iris, BF/DF . ... Q-Plan™ Achromat Objective, 100 X 1.25, oil, BF . ... Q-Plan™ Achromat Objective, 100 X 1.30, oil, iris, BF/DF ...

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• OEM Optical Components
• EDUPOINTER
• CN-UPOL Universal Condenser

... Theoretical investigation was carried out of electron transport phenomena in superconducting heterostructures S-MB-N and S-MB-S with magnetic barriers (MB) determined by monolayer of ferromagnet (F) or spin-valve structures FNF or FIF (N is a normal metal, I is insulating layer). ... The I-V characteristics of cuprate bicrystal Josephson junctions have been experimentally investigated at different temperatures, barrier transparency factors and the phase difference of superconducting electrodes. ...

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• Getting Started in Actor Prolog. Component-Oriented Programming.

... 5-GHz total flux density . ... 2.639 * = the position has been determined to an accuracy of 10 mas from the VLBApls data . VLBApls image at 5 GHz . ... contour gif | contour PostScript . Correlated flux density (Jy) vs. projected baseline length plot . ... PostScript . Gaussian source model component parameters . flux density (Jy) . EW position (mas) . ... major axis (mas) . minor axis (mas) . position angle ( ) . ... S component contour PostScript . ...

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• J1501-3918
• J1833-2103
• J2357-1125

... With forseeable saturation of scaling CMOS devices the electron spin att racts much attention as a complement or even a replacement of the electron charge in digital information processing. ... Because of these properties the electron spin lifetime in silicon is long, which makes silicon perfectly suited for spin-driven applications. ... It is straightforward to apply the same techniques to obtain a spin lifetime above 1ns making silicon films and fins perfect spin interconnects. ... Wien - New York...

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• http://www.ssau.ru/files/science/conferences/itnt2015/itnt_2015_125.pdf
• http://www.ssau.ru/files/science/conferences/itnt2015/itnt_2015_70.pdf
• Гречникова Анна Федоровна. Публикации

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" . ...

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• S.T.A.N.O. Components Inc., AstroGuide Listing
• Magnification (Power) And Using Eyepieces - an Astronomy Net Article

... In this first example, we allow an object to fall onto a small radar unit . The resulting Time-Frequency distribution is shown as a contour plot in Fig. 8 (a). Figure: FIGURE GOES SOMEWHERE IN THIS GENERAL VICINITY . ... Its density plot appears as an image in Fig. ... The response has a very high peak, as evidenced from Fig. ...

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• Feature enhancement: normalizing
• Explanations for solar physics computing page
• Long description of example illustrating background calculation