... The APOLLO Lunar Ranging Project . Professor Tom Murphy . Thursday, Nov 11, 2010 at 8:00 PM . ... Professor Tom Murphy grew up in Chattanooga, TN, where he was an active amateur astronomer and telescope builder. ... In 2003, Murphy moved to the University of California, San Diego where he is an associate professor and continues to run the APOLLO project. ... Nov . ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

... X Rays Indicate Star Ripped Up by Black Hole . ... Credit: M. Weiss, CXC , NASA Explanation: What could rip a star apart? ... The infalling gas has been predicted to emit just the same blast of X-rays that have recently been seen in the center of galaxy RX J1242-11 . ... Such events are rare, occurring perhaps only one in 10,000 years for typical black holes at the center of typical galaxies. ... Publications with keywords: black hole - star . Publications with words: black hole - star . ...

... Because binary X-ray sources are strong emitters over a broad range of the electromagnetic spectrum, with each part of the spectrum contributing distinct and often time-variable information, attempts to understand these systems by concentrating on information from a limited wavelength range may lead to contradictory and misleading conclusions. ...

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. ...

... Radio astronomical tests of the engineering model of the space radio telescope (SRT) were completed in Pushchino - see Results . ... Monitoring of the development of the upgrade on-board 1.35-cm receiver (R-SRT-1.35 cm): . ... EM Engineering Model . ... OHCFS-SRT Space Radio Telescope On-board Heterodyne and Clock Frequency Synthesizer set . OHFS-SRT Space Radio Telescope On-board Hydrogen Frequency Standard . ORFS-SRT Space Radio Telescope On-board Rubidium Frequency Standard . ...

Ranger to the Moon (1964 - 1965) . ... The Ranger spacecraft were designed to fly straight down towards the Moon and send images back until the moment of impact. Ranger 7 impacted in mare terrain modified by crater rays. Ranger 8 also impacted in mare terrain, but this area contained a complex system of ridges. ... Each Ranger spacecraft had 6 cameras on board. ... Launched: 28 July 1964 . ... Ranger 4 was launched on April 23, 1962, and became the first US spacecraft to impact on the moon. ...

... Meade Series 4000 Nebular Filters incorporate the very latest in interference coatings technology. ... Technical Basis of the Meade Broadband Nebular Filter: As shown in the transmission graph below, the Meade Broadband Nebular Filter strongly rejects the light of sodium- and mercury-vapor lights as well as natural airglow and auroral emissions. ... Meade Series 4000 Narrowband Nebular Filters . ... Meade Series 4000 Oxygen-III Nebular Filters . ... Meade Series 4000 Photo-Visual Color Filters . ...

... We study in this paper the effect of shock excitation of leaky and surface modes by the p-polarized electromagnetic wave incident on the rapidly ionized gaseous or solid layer. ... For example, if [pic] (solid density, multiple ionized plasma), the basic frequency [pic], [pic], [pic] we find, that the wavelength of leaky wave [pic] is in soft x rays band. ... If [pic] (low density gaseous plasma), the basic frequency [pic], [pic], [pic] we find, that the wavelength of leaky wave [pic] is in THz band...

OptInt PmWiki : Pm Wiki / Wiki Structure . ... Wiki groups > . Authors have a range of options to choose from when organizing a collection of wiki pages . ... Categories . Individual wiki pages can also be grouped by having tags and links to a common "category" page; we say that any pages that link to a common page are in a "category" defined by that page. PmWiki uses the [[!category]] markup as a shorthand to place a page into a category with other pages containing the same markup. ...

... We present a computer program for modelling energy flux distribution and light curves of eclipsing binaries from far ultraviolet to infrared regions. The Roche model is assumed. Proximity effects of components (reflection of radiation and surface gravity darkening) are taken into account. ... Figure 1: The surface temperature distribution for Algol A-B system before (upper plot) and after (lower plot) correction for temperature due to the irradiation effect. ...

The hotbed effect (hothouse effect) in the planets atmosphere is the inside atmosphere layers heating (of the Earth, Venus etc.), due to the transparent planet atmosphere for the main part of solar radiation (in optical range). In the atmosphere of the Earth this radiation is absorbed by the molecules of H2O, C02, O3 and others. ... As a result of human activities the CO2 content is increasing (and the other gases, absorbing in infrared range). ...

Subject, Object and Problems of Astrophysics. Practical and Theoretical Astrophysics. ... Visual Telescope; Problems Which Are Solved with the Its Help. ... Resolution of Telescopes. ... Effectiveness of Telescope in Respect of Resolution. ... Optical Power of Telescopes for Star-like and Extensive Objects. Boundary Magnitude. Reasons of Light Dissipation in Telescopes. ... Spectral Instruments in Astrophysics. ... Basic Photometrical Ideas, Magnitudes and Their Measurement. ...

You might wonder how a black hole could be found if nothing including light can escape from it. ... HDE 226868 is a massive blue supergiant star; its companion is believed to be a black hole, surrounded by an accretion disc of gases from HDE 226868 which are spiraling into the black hole. ... Three other objects -- LMC X-3 in the Large Magellanic Cloud galaxy, and A0620-00 and V404 Cygni in our galaxy -- are also believed to have black holes as one of their components. ...

BIBO BIBO (BiB3O6) is a newly developed nonlinear optical (NLO) crystal, which has excellent characteristics for nonlinear optical applications. ... BIBO's effective SHG coefficient is about 9 times that of KTP. ... 63% 33% 47% 2370-A Qume Drive, San Jose, CA 95131, Tel: (408) 436-5558, Fax: (408) 436-5557 http://www.forealspectrum.com email: sales@forealspectrum.com BIBONLO, Rev 1.2, 2/13/2006, Page 1/2 BIBO BIBO Applications SHG and THG of middle and high power Nd doped lasers at 1064nm. ...

... Appendix: Effect of errors in the encoder roller and drive disk on tracking. ... Servo error. ... Table 1: Tracking error budget Component Component error (nm RMS ) Effect (mas RMS ) Az axis wobble Drive disk high freq. error 200 17.17 Guide roller error 50 8.58 Lower bearing high freq./nonrep. error 50 4.29 Alt axis wobble Bearing high freq./nonrep. error 50 4.86 Az encoding error Drive disk high freq error 200 4.59 Encoder capstan error 50 5.73 Encoder ...

... 18941904; Bespalov P.A. Effective saturation of absorption in a plasma magnetospheric maser. In book: Nonlinear Space Plasma Physics, R.Z. Sagdeev -Editor-in-Chief, American Institute of Physics, 1993, p.339-346]. Magnetospheric plasma maser [Bespalov P.A, Trakhtengerts V.Yu., ... In a magnetospheric plasma maser (MPM) the relatively dense magnetised plasma and the conjugate ends of a magnetic trap form a quasioptical resonator for electromagnetic waves. ...

... Vodka was brought to Russia in XVI century. ... It results in the feeling of intoxication, happyness and eiphoria. All these feelings attract people to alcohol. 300-450 gr of beer, half glass of spirit . ... 500-700 gr of beer, a glass of vodka, 2glasses of vine . ... light intoxication . 700-900 gr of beer, 3 glasses of whisky, 1/2 bottle of vine, 3 glasses of vodka . ... eiphoria, happiness, light mood, loss of control . 2000-2300 gr of beer, 3 big glasses of gin, a bottle of vodka . ...

... Behemoth black hole found in an unlikely place . ... black holes . ... Sky Events . ... Events . ... What effect does time dilation have on something trying to cross a black hole's event horizon? Would that material cross, or would time essentially "freeze"? ... An object crossing a black hole s event horizon, the point of no return, will simply pass through from its own perspective, unaffected by time dilation. ... Get instant access to subscriber content on Astronomy.com! ...

... Bad Astronomy . ... Every few months, one of a series of questions comes up on the USENET group sci.astro involving tides, or the rotation of the Moon, or the recession of the Moon from the Earth. ... Why the Moon's rotation period is the same as the length of time it takes to orbit the Earth (same as number 1, but phrased differently). ... But when this happens, the time it takes for the Earth to rotate once will be slowed to exactly the same time it takes for the Moon to go around the Earth once! ...

Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... One of the rarest but most interesting effects which can be observed with the Irkutsk IS radar is anomal high power signal registraion(coherent echo) due to strong magnetic storms. ... These signals are formed at E-layer heights in the presence of a strong electric field which causes particles to drift. ...