ACTIVITY 3 . ... In this activity, students observe the design of outdoor lighting and discuss how this affects the efficiency and effectiveness of the job which the lighting is intended to do and the degree of light . ... More advanced students may also observe and describe the spectrum of the outdoor lighting and how that is related to the effectiveness of the lighting and to the degree of light pollution. ... An Example: The Light Pollution Project in the Schools in Greece . ...

Winer Observatory P.O. Box 797, Sonoita, Arizona 85637-0797, USA . ... Winer Observatory) was incorporated in 1983 as a 501(c)(3) non-profit public charity to perform basic research in astronomy, provide educational outreach programs, and provide site and maintenance services for small telescopes through cooperative agreements with other astronomical institutions. ... The picture at the top left of this page is of our facility near Sonoita, Arizona, approximately 50 miles southeast of Tucson, Arizona. ...

... For the first balloon flight of the Nuclear Compton Telescope (NCT) we have simultaneously reduced lowenergy background and enabled hard X-ray imaging by enshrouding the top of the instrument in a tin shield (bottom had BGO shielding), with part of the shield having strategically placed holes -- a 10% open coded aperture mask working up to 80 keV in conjunction with the finely pixellated double-sided Ge strip detectors. ... Key words: Compton telescope, coded mask, hard X-ray imaging, NCT. ...

This directory contains Calgary Neutron Monitor Data at five minute resolution. Each file is a gzipped tar archive that contains files of uncorrected count rates and barometric pressures at five minute intervals for one year. A file named snm.calg.fmi.YYYY.tgz is an archive that holds five minute data for the year YYYY. ... So a file named cal01030.fmi contains five minute uncorrected data for year 2001 day 30 (which is Jan 30, 2001). ... A text file named note.txt is also usually present. ...

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. ...

... Editor: Store undo text as UTF-8 to reduce memory used when changing large amounts of text. Eliminate an inefficiency when deleting a very large number of lines in the editor. ... Fix crash in local FC when acting as the UI for a remote when a large burst of data arrives from the remote. - fctar: - Fix deleting a file >2GB from a tar file. Use size in pax 'x' record if available. ... Improve tar file support: - Correctly process pax 'x' headers. Use the size value from pax 'x' headers. ...

... 18-1 74 40.5 0.52 Cas A . 18-1 75 38.5 0.49 Cyg A . ...

Target: M44 Date: 2011-10-25 Time: 09:02:49 UT Telescope: CDK20N Camera: Apogee U16M Filters: griz Exposure time: 100 seconds Observer: John Kielkopf Processing: John Kielkopf Images dark subtracted but not flat fielded Astrometry with astrometry.net RGB generated in ds9 jpg and png orientation is N up and W right Log stretch 1000 color balanced to account for filter and camera efficiency

... The curve of the photoconductivity of n -GaAs versus the magnetic field during monochromatic infrared illumination reveals oscillations consisting of two series of extrema which are periodic along the inverse-field scale. One series of extrema stems from the nonmonotonic field dependence of the impurity magnetoabsorption coefficient, the other stems from a sharp step in the distribution function of nonequilibrium electrons. PACS: 72.40.+w, 72.80.Ey, 78.20.Ls ...

Multipurpose Aerospace System (MAKS) . ... Up to date the main components of the orbital stage construction have been worked up, external fuel tank mock-up has been made, significant work has been already done on the propulsion system MAKS consists of the subsonic carrier aircraft and an orbital stage with an external fuel tank mounted on it As the first stage the An-225 MRIA aircraft originally intended for the BURAN transportation is used. ... CREATION AIRFRAME OF THE BURAN ORBITAL SPACESHIP . ...

Polycyclic aromatic hydrocarbons in HII regions: correlation with metallicity . ... We have perfomed the aperture photometry of HII regions using infrared images from telescopes Spitzer and Herschel at passbands 3.6, 4.5, 5.8, 8.0, 24, 70 and 160 m. Emission of PAHs are observed at passbands 3.6 - 8.0 m, 24 m is emission likely of hot small particles and finally large particles are responsible for emission at 70 and 160 m. We determine abundances of PAHs using model of Draine Li (2007) . ...

LBO LBO has many unique characteristics that contribute to its wide use as a nonlinear optical crystal. ... LBO Specifications Wavefront Distortion Dimension Tolerance Clear Aperture Scattering Sites Flatness Surface Quality Parallelism Perpendicularity Angle Tolerance Damage Threshold /8 at 633nm (W: +/- 0.1mm ) x (H: +/- 0.1mm ) x (L: + 0.2mm/- 0.1mm ) 80% of central area No visible scattering centers when inspected by a 30 mW green laser /8 at ...

You Can Make Stellar Images Brighter . Articles | ... A few months ago I wrote an article titled "You Can’t Make Them Brighter". So why am I now writing that you can make them brighter. ... The image of a focused star is actually a small disk called the Airy disk, named after the 19 th century scientist Sir George Airy. ... For a given aperture, a smaller Airy disk means that the light is focused to a smaller disk and is therefore brighter. ... www.astronomy.net . About Astronomy Net | ...

... For the past years I have been working on the problem of synthesis of light curves of close binary systems, consisting of a normal star and a compact object (point object with fixed X-ray luminosity). ... Possible existence of a bright spot on the disk's lateral surface is taken into account. ... The last of then will be published in Gordon and Breach Publishers ( Cherepashchuk A.M., Katysheva N.A., Khruzina T.S., Shugarov S.Yu. ... Cherepashchuk A.M., Katysheva N.A., Khruzina T.S., Shugarov S.Yu. ...

Individual papers from the VSOP Symposium Proceedings, "Astrophysical Phenomena Revealed by Space VLBI", eds H. Hirabayashi, P.G. Edwards and D.W. Murphy (ISAS), can be downloaded as gzipped postscript files by clicking on the links below. ... Multi-Epoch Global+VSOP/HALCA Observations of Virgo A at lambda 6 cm . ... Space-VLBI Observations of the Core-Jet in the Nearby Spiral Galaxy M81 . ... H. Hirabayashi, P.G. Edwards, B.G. Piner et al. ... Pentachromatic VSOP and VLBA Survey of GPS Sources . ...

LaserS . ... However to use a laser ray with a view of illumination it is so irrational how to heat a room burnt in a fireplace bank notes. ... Light ray! ... To laser engineering of all a quarter of century, however lasers had already time to win strong positions in many branches of a national economy. ... For example, practically instant punched hole of holes laser radiation many times over augments productivity of operation of the driller and besides essentially raises quality of this operation. ...

2005, 31, 8, . ... 11) tg esc = Bm /B - 1 bm /b - 1 (8) (11), , 1 l2 b tg2 0 = bm /b - 1 1 = bm - b. (12) l2 tg2 0 (10) : K = K0 sin2 0 1 +b . ... f0 (K0 ) : dN (K0 ,0 ) = N0 f0 (K0 )dK0 2 sin 0 d0 , 31 8 2005 (12), Kesc = K0 bm sin2 0 . ... 2 8 2005 606 , 2.0 () 1.5 1.0 c 0.5 a 4 y 0 2.0 р 1.5 b 1.0 a 0.5 (·) b , , .. , : -esc N =N 0 esc /2 f ()2 sin d = (31) = N0 l b esc sin d sin2 + bl2 cos2 3/2 . ... K N0 : -esc c F =N 0 0 esc f (K,)KdK2 sin d; (46) 0.8 0.6 l 0.4 0.2 a 0 100 - esc (. (11)), -, . ...

... 33, No. 5, pp. 332­339. i Young Nuclei in Dwarf Elliptical Galaxies I. V. Chilingarian1, 1 2 2 ** , O. K. Sil'chenko1, V. L. Afanasiev2 , and Ph. ... In all three galaxies, the luminosity-weighted age of the nuclei (4 Gyr) is considerably younger than that of the population in the outer regions of the galaxies. ... Kinematically decoupled structures associated with a young metal-rich stellar population can be formed precisely through a dissipative merger of gas-rich galaxies several Gyr ago. ...

... Authors: S. Molinari et al. arxiv:1105.4915 Фотометрическое красное смещение z ~ 9.4 для GRB 090429B (A Photometric Redshift of z ~ 9.4 for GRB 090429B) . Authors: A. Cucchiara et al. arxiv:1105.4887 Атакамский космологический телескоп: измерение спектра первичных возмущений (The Atacama Cosmology Telescope: a measurement of the primordial power spectrum) . ... Authors: Mark Reynolds, Jon Miller . ... Authors: Raphael Bousso, Leonard Susskind . ... Authors: Jarrett L. Johnson . ...

... Authors: Spyros Basilakos (Imperial College London) . ... Title: Populating a cluster of galaxies - I. Results at z=0 . ... Title: The Merger Rate to Redshift One from Kinematic Pairs: Caltech Faint Galaxy Redshift Survey XI . ... Title: Multi-wavelength observations of an evolved galaxy group: An endpoint of galaxy merging? ... 23 matches for the search pattern galaxy merging . The URL for this page is: http://xxx.itep.ru/find/astro-ph/1/galaxy+merging/0/1/0/past,all/0/0 www-admin@xxx.lanl.gov ...