Instrument Summary -- Why Use the GHRS? Here we provide a brief overview of the basic properties of the GHRS. ... The GHRS can obtain spectra from about 1150 to 3200 . ... The repeatability of fluxes is even better, being better than 1%; i.e., it is possible to compare measures of the same wavelength in the same star at different times to within 1% for observations with the LSA. ... The source to be observed may be placed in a Large Science Aperture (LSA) or a Small Science Aperture (SSA). ...

... very large . no limits in x,m . ... x, m, alpha . ... no limits in x,m,alpha . As a first approximation when one wants to learn possible effects of nonsphericity of scatterers. seldom . ... very large / large . ... Study of shape effects since spheroids with different semiaxis ratio present a set of 2D shapes from needles to disks (incl. spheres) . ... Study of complex shape effects. seldom . ... Possible study of 3D shape effects. ... Possible study of shape and structure effects. ...

... The Science Operation Department is composed of Astronomers, Telescope Instruments Operators(TIOs) and Data Handling Administrators(DHAs). ... Astronomers have proposed several methods to quantitatively measure the amount of turbulence above the telescope, which the most common ones is Differential Image Motion Monitor (DIMM). In optical testing, the Hartmann test is the common method to test the quality of optical components. ... Hartmann mask consists of 48 lenses. ...

... The sky distribution of the BCGs from the HSS sample is shown in Fig. 6 together with BCGs from the SBS and Case surveys (Izotov et al. [ 1993b ]; Pustilnik et al. ... First, we compare the apparent magnitude distributions of the three samples. ... The similar behaviour of the faint end of the apparent magnitude distributions infers that the Northern BCG sample may have a similar completeness down to this limiting magnitude. ...

... 7.1 Introduction to media types . ... 7.3 Recognized media types . 7.3.1 Media groups One of the most important features of style sheets is that they specify how a document is to be presented on different media: on the screen, on paper, with a speech synthesizer, with a braille device, etc. Certain CSS properties are only designed for certain media (e.g., the 'cue-before' property for aural user agents). ... For example, the 'font-size' property is useful both for screen and print media. ...

... Interactive Catalogs - . ... The Parkes multibeam system was used for numerous large-scale HI surveys (e.g. HIPASS and HIZOA) from which the respective science teams extracted galaxy catalogs some of which are made available here. ... P ublished Catalogs: . the `HIPASS Bright Galaxy Catalog' (HIPASS BGC) by Koribalski et al. (2004) . the `HIPASS Catalog' (HICAT) by Meyer et al. (2004) and Zwaan et al. 2004) . ... RA (J2000) Fitted HI position (hms) . DEC (J2000) Fitted HI position (dms) . ...

... Parallel to HIPASS: o HIDEEP: "The HI equivalent of the Hubble Deep Field" ­ (9000s per beam) HIDEEP: The Basics ! ... selection limits: o peak flux and velocity width limited o limits are 9.6 mJy and 4 ch = 52.8 km/s o completeness limit at ~18 mJy 5 optim.smooth limit 3 peak flux limit HIDEEP: Optical Follow-Up ! ... Galaxies in HIDEEP are more gas-rich observed corrected HIDEEP: Column Densities - Theory TB = ! ... There don't appear to be any low-column density galaxies in HIDEEP ! ...

Astronomical Data Analysis Software and Systems XIII ASP Conference Series, Vol. ... We describe a graphical visualization tool, VOPlot, which can be interfaced with data in VOTable format to form a valuable aid in scientific discovery. ... VOPlot The motivation behind the VOPlot was to provide a web-based visualization tool for astronomical data in VOTable format. ... VOPlot is a java applet that can be integrated with any web-based catalogue service that generates data in VOTable format. ...

... Science . ... Science Activities > PhD Thesis Topics offered by ESO Faculty Members > Thesis Topic: Properties of kinematically decoupled structures in Early-Type Galaxies . ... Science Users Information . ... ESO-MIDAS . ... ESO Science Newsletter . ... The project consists in measuring the stellar kinematics, stellar populations, dynamics, and morphological properties of the kinematically decoupled structures observed in the inner regions of Early-Type Galaxies. ... Return to list of thesis topics...

Home About Meade Product Information Dealer Locator Customer Support Investor Relations Dealer Support Employment Opportunities Site Map . Meade Instruments Corporation . ... Meade Binocular Limited Warranty . ... Meade will repair or replace the product, or part thereof, found upon inspection by Meade to be defective, provided the defective part or product is returned to Meade, freight prepaid, with proof of purchase. ... This warranty supersedes all previous Meade binocular warranties. ...

DISCLAIMER: The larger the aperture, the more light a telescope will gather and the fainter the object you can see. Here is a range of magnitudes you might expect to see. Given excellent sky conditions and good optics, a well trained eye can sometimes add up to 0.8 magnitude to these values. Limiting Magnitude depends on much more than the instruments aperture. ... One formula is for aperture in inches the other is for aperture in millimeters. ... Aperture (inches) . ... 15.2 . ...

... By taking advantage of atomic hydrogen (HI) observations obtained as part of the GALEX Arecibo SDSS and ALFALFA surveys, I will demonstrate that the combination of deep, targeted observations and spectral stacking of blind, large-area shallow surveys is critical in order to characterize how the gas content of galaxies depends on their structure, star formation activity and environment. ...

Alexander S. Dmitriev . Institute of Radioengineering and Electronics of the Russian Academy of Sciences . Mokhovaya st., 11, Moscow, 103907, Russia. ... Moscow Institute for Physics and Technology . ... The relationship between the problem of cleaning chaotic signals off noise and the information properties of the signals is shown. Some methods for chaotic signal cleaning are considered. The efficiency of these methods is evaluated by computer simulation. ...

... The random graph obeys the zero-one law if for each firstorder property L either its probability tends to 0 or tends to 1. ... In 1988 S. Shelah and J.H. Spencer proved that the random graph G(n, n- ) obeys zero-one law if > 0 is irrational. ... 1 Recently I proved that if (0, k-2 ) then the random graph G(n, n- ) obeys 1 1 zero-one law. ... I also proved that the random graph G(n, n- ) obeys the zero-one k -law if k = 1- 2k-1 + , (0, )\Q. Moreover, 1- 2k-1 + S1 for any {1, ..., 2k-1 -2}. ...

impulse systems Postgraduate student, Faculty of computer science, Ivanovsky Leonid Dynamic system Substitutions Limit impulse system Research mapping Method of research Results of research : one-dimensional case d= 0.025 d= 0.02175 d= 0.015 Screenshots of program for one-dimensional-case d= 0.025 d= 0.02175 d= 0.015 Results of research : two-dimensional case Bifurcations d 0.003 0.003 d 0.006 ...

XMM-Newton Science Analysis System Page: 1 ommag July 2, 2008 Abstract Converts from count rates to magnitudes in the instrumental system. ... Please note that no magnitude is computed for corrected count-rates greater than 1000- for such bright sources the count rate is wrong because it is out of coincidence-loss correction. ... MAG The instrumental magnitude computed using the corrected count rate and using the appropriate calibration constants for the lter. ... Convert this to a limiting magnitude. ...

... This chapter documents all the JavaScript objects, along with their methods and properties. ... Full entries for each object appear in alphabetical order; properties and functions not associated with any object appear in Chapter 2, "Top-Level Properties and Functions." ... Tables included in the description of each object summarize the object's methods and properties. Full entries for an object's methods and properties appear in alphabetical order after the object's entry. ...

J/MNRAS/429/2080 Lockman Hole 10C sources radio spectral indices (Whittam+ 2013) ================================================================================ The faint source population at 15.7 GHz. ... 2011, Cat. ... 2008, Cat. ... For 10C sources without a counterpart in the GMRT image, three times the local noise is included as an upper limit on the flux density at 610MHz. ... 1.4-GHz flux density value from NVSS catalogue, including upper limits for undetected sources 76 I1 --- f_SNVSS [0/1]? ...

... Stellar Evolution . Nucleosynthesis in Stars . The Evolution of Star Clusters . JAVA Physics Lab . Alternative Energies Class . Steve Kevan's Physics 251 Class . ... Talk on Solid State Physics of CCD detectors . Talk on Cosmological Issues . ... Digital Spectra of Stars . NETexperts E-mail List . The Electronic Universe Project e-mail: nuts@moo.uoregon.edu ...

. Next: Spectrum Up: R CORONAE BOREALIS STARS Previous: HISTORICAL BACKGROUND . Figure: The light curve of RCoronae Borealis during a fading event in 1859 . RCB stars were first identified by their characteristic light curves. A part of the light curve of RCrB itself, taken from over a century of observations compiled by Ludendorff (1906) is shown in Figure 1 . Spectrum . Galactic distribution and absolute magnitudes . Numbers and distances . Simon Jeffery . 2002-01-25