... 1998, 15, 147­8 . An Imaging Survey of Northern Galactic H Emission with Arcminute Resolution Brian Dennison, John H. Simonetti and Gregory A. Topasna Martin Observatory, Institute for Particle Physics and Astrophysics, Physics Department, Virginia Tech, Blacksburg, VA 24061, USA dennison@astro.phys.vt.edu; jhs@vt.edu; topasna@astro.phys.vt.edu Abstract: We present preliminary results from a high-resolution, high-sensitivity imaging survey of the northern galactic H emission. ...

Next: Detection Efficiency Up: CCD Scientific Performance Previous: CCD Scientific Performance . The X-ray energy required to liberate a charge pair in a semiconductor is approximately an order of magnitude lower than in gas detectors, hence the potential spectroscopic advantage of CCD detectors. ... For a number of years, good scientific CCDs attained noise performance of electrons rms, but this limited the energy resolution for X-ray energies 3keV. ...

Next: J.E. Chambers, Research Astronomer Up: Research Previous: Research Contents . ... Solar Variability and Climate . Other Activities . ... Applied to data of flares on Gliese866 he was able to estimate the area of hydrogen emitting flare regions as 1-13% of the stellar surface. ... As partners in the project, Armagh Observatory has been asked to contribute to the selection process in exchange for priority access to the data which will eventually flow from the satellite. ...

GRIZLI Science Performance Goals Includes also some performance goals for telescope and software 16 October 2011 A. Instrument specs 1. Delivered image quality, in each filter, across entire FOV Goal: 0.5" FWHM, with well-behaved PSF, at high altitude (low airmass) 2. Limiting magnitude Goal: 26th mag in griz gives S/N=10 in 3 min exposure sky-limited in all filters with no moon 3. ... Fringing Goals: (for 3 min exposure) - less than 1% in i - less than 5% in z 8. ...

. Main mirror diameter . 6 m . Focal length . 24 m . Light collecting area . 26 sq.m . Wavelength range . 0.3 - 10 mkm . Angular resolution . 0.6 arcsec . - with the application of speckle . interferometry techniques . 0.02 arcsec . Mass of the main mirror . 42 tons . Total telescope mass . 850 tons . Telescope height . 42 m . Dome height . 53 m . Limiting stellar magnitude (1994) . 26 . The Observatory also has a 1-m and a 0.6-m telescope manufactured by "Karl-Zeiss-Jena" (Germany).

... 2011: . A comparison of radiation in the corona above the spot in the radio and X-ray ranges . In the observations of the 04.01.2011 solar eclipse at the RT-32 (the observatories Svetloe and Zelenchukskaya) and RATAN-600 radio telescopes the limiting angular resolution (1 arc second) in the eclipse observations in the microwave frequency range was reached for the first time, determined by the diffraction on the lunar limb. ... Archive . ...

. Pulkovo Observatory of Russian Academy of Sciences is situated . near Saint-Petersburg. It was founded in 1839. 196140, Saint-Petersburg, Pulkovskoye chaussee 65/1 . English version . Russian version . This page has been accessed times since May 1, 1999.

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 . ...

Dynamics and Statistics M/M 10 4 statistics R = 0.9992 2 103 dynamics R = 0.9401 10 2 2 log(/o) -1.8 -1.7 -1.6 -1.5 -1.4 -1.3 -1.2 -1.1 -1 Comparison of results of mass estimation which is received by means of our method (dynamics) for 18 clusters of Milky Way with suspected BH with data in [2] (Safonova, Shastri, Aph. ... We considered the limits of central bodies masses for 4 clusters in our Galaxy (47 Tuc, Cen, NGC 6388, M15) and G1 Globular cluster in the Galaxy Andromeda. ...

Examples of some of the newly discovered double active nuclei. On the left are traditional astronomical "seeing limited" images from the Sloan Digital Sky Survey; the central box is shown expanded on the right, as observed with the Keck telescope and Adaptive Optics. In one image, there is a further zoom-in on the central portion shown in the upper right.) ...

... Limit of star magnitude. If you want to obtain best results, you should use reference stars not more dimly than limiting star magnitude of your telescope. Limiting star magnitude depends on time of an exposition also.) This value should be set as " maximum of star magnitude " in a dialog box " Extraction from catalogue". To find darkest stars in the frame, make the following: . ... Two star magnitudes (m1, m2 in two photometric systems) will be outputted in the window "Information". ...

COMBINATORICS OF MODULI SPACES, . HURWITZ NUMBERS, AND CLUSTER ALGEBRAS . ... Participants . ... Organizing Committee: Igor Artamkin , Leonid Chekhov, Liza Kryukova , Sergei Lando , Armen Sergeev . ... For a limited number of foreign participants, the organizers provide reasonable accommodation for free/budget price. ... Due to limited funding, the organizers cannot cover travel expenses of the participants when traveling outside Russia . ... Contact emails of the organizing committee . ...

... Observatory . ... The Laboratory of Astrometry . Dept. for Physics of Stars&Galaxies . ... Astronomical Calendar . ... UkrVO . ... The purpose of research: Creating a stellar catalog to study the structure and kinematics of star systems, including open star clusters and stars with large proper motions; the enhancement ICRF / Hipparcos system to stars dawn to 17 m (V); Search of binary systems of brown dwarfs and determination of their parameters; astrometry of minor bodies of the Solar System. ...

J/AstL/vol/page SAI Open Clusters Catalog (Glushkova+, 2009) ================================================================================ Automated search for star clusters in large multiband surveys. ... Color excesses E(B-V), distance moduli and ages were determined for 141 new and 27 known, but poorly studied clusters. We present the Sternberg Astronomical Institute Open Clusters Catalog (SAI OCL Catalog) of coordinates, diameters and main physical parameters of these clusters. ...

... Seminar archive . ... Seminar archive 1998 9 October . ... ФТИ ) . ... На основе измерения спектров квазаров с высоким разрешением мы получили прямые следующие ограничения на среднюю скорость изменения постоянной тонкой структуры alpha : . alpha'/alpha| < 3.1 10 -14 yr -1 . ... Endeavours of the unification of the four fundamental interactions have resulted in a development of theories having cosmological solutions in which low-energy limits of fundamental physical constants vary with time. ...

... Subject and Problems of Stellar Astronomy. ... Plane of Galaxy, Methods of Its Location Determination. ... Stars Distances. ... Other Methods of Stars Distances Determination. ... Tangential Velocities, Their Determination by Self-Motions. ... Determination of Solar Apex and Spatial Velocity by Radial and Spatial Velocities of Stars. ... Features of Orientation and Parameters of Peculiar Stellar Velocities Ellipsoid. ... General and Selective Light Absorption in Galaxy. ... Darc Clouds in Galaxy. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Comets and Asteroids . ... Image credit:ESO/J.Emerson/VISTA. ... However others are less pessimistic and it has even been claimed that the mysterious ?Wow! signal? received in 1977 originated from the direction M55.б  Sadly, this still unexplained pulse of radio energy originated from a location rather to the northwest of M55 so I doubt if the source was this cluster (if indeed the signal was genuinely of extraterrestrial origin). ... Mysterious Wow! ...

... Объективы PENTAX K . ... Объективы серии Limited . ... добавить в окно сравнения . ... Объектив SMC Pentax FA 31мм f/1.8 AL Limited Black . Широкоугольный объектив высшего класса эксклюзивной серии Limited . ... Объектив SMC Pentax FA 31мм f/1.8 AL Limited Silver . Высококлассный широкоугольный объектив эксклюзивной серии Limited . ... Объектив SMC Pentax FA 43мм f/1.9 Limited . ... Объектив SMC Pentax FA 43мм f/1.9 Limited Black . ... Объектив SMC Pentax FA 77 f/1.8 Limited Black . ...

... Цвет: синий . ... Материал верха: натуральная кожа . ... Материал подошвы: резина . ... Пол: Мужской . Кроссовки Botticelli Limited. ... Материал: натуральная кожа. ... Пол: Унисекс . ... Игрушки максимально точно копируют оригинал и могут быть выполнены в натуральную величину. ... Материал верха: Натуральная кожа . Материал подкладки: Натуральная кожа . Материал стельки: Натуральная кожа . ... Маленькой ножке будет комфортно благодаря натуральным материалам и отверстиям для воздуха. ...

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. ...