... 3a. Angle . of sunlight . ... The Moon (1) . ... 4b. Moon Libration . ... The apparent path of the Sun across the sky. Note how much higher the Sun is in the sky in mid-summer! ... In addition, they are invariably tilted at an angle around 45 , to make sure that the arrival of the sun's rays is as close to perpendicular as possible. ... The rays of the summer sun, high in the sky, arrive at a steep angle and heat the land much more than those of the winter sun, which hit at a shallow angle. ...

... The remote planet Pluto and its moon Charon orbit the Sun at a mean distance of almost 6,000 million kilometres, or nearly fourty times farther out than the Earth. During a recent investigation by an international group of astronomers [1], the best picture ever of Pluto and Charon [2] was secured with the European Space Agency's Faint Object Camera at the Hubble Space Telescope (HST). ... The new HST image was taken when Charon was near its maximum elongation from Pluto (0.9 arcseconds). ...

... V F 463|18 February 2010 RESEARCH HIGHLIGHTS JOURNAL CLUB Rodney S. Ruoff University of Texas at Austin A physical chemist is excited by the electronic potential of a new arrangement of carbon sheets. ... The one-atom-thick sheets of carbon have exceptional mechanical, thermal and optical properties, which researchers are impatient to exploit. ... Unlike graphene, which consists of layers just one atom thick, Bi2Te3 has five closely packed atomic sheets bound by weak forces. ...

... 2 participants in the younger group. 1 participant in the senior group. prizewinners (I-st or II-nd prize) of the previous IAO not older than the age limit who did not used such a possibility before. 1 team leader (specialist in astronomy or astronomy education). ... For the states, starting their activity in the International Astronomy Olympiad and for the students participating the first time in IAO the age limits for the groups for IAO-2004 are defined as: . ...

... The NATO "Science for Peace" Program , Project number SfP 973559 . ... Receiver devices based on superconducting Josephson junction dynamics provide easy and extremely sensitive way for measurements of contents of these molecules. ... Fast development of SQUIDs resulted in fabrication of number of devices for supersensitive physical experiments and production of sophisticated multichannel measurement systems used in medicine for magnetocardiography and neural investigations. ...

... Possible extracurrent spikes, collected by long power transmission lines, have to be suppressed before they enter into the core electronic. Spikes cause the premature aging of the devices with a consequent decrease of the MTBF. ... Premature aging of the devices, due to spikes collected by the power transmission lines, strongly decrease the MTBF of the devices. ... 4000 V Standard devices Stray Italy Alarm Aging Monitoring SDS-IND-DIN-M230VAC 1000 V Vin=230 V 1000 V 540 V V tresh. ...

... Since January 2000 our English translation (Astronomy Letters) is available on-line !!! . see Note on printing of the on-line papers) . Scanned copies of Astronomy Letters for 1975-2000 can be found on-line in free access in ADS . ... 1995 , 1996 - the Grand prize (full story) , 1997 (full story) , 1998 (full story) , . 1999 , 2001 (full story) , 2003 , 2004 (full story) , and 2005 . ... LANL / ITEPh astrophysics preprints . ... E-mail: pazh@hea.iki.rssi.ru . ...

. 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.

Next: DIRECT MASSES FOR BXCIR Up: EXTREME HELIUM STARS: PULSATION Previous: PULSATION PROPERTIES . As already indicated, V652Her is an important EHe star because its relatively short pulsation period and large amplitude pulsations allow its overall dimensions to be determined with high precision. ... Saio & Nomoto (1998) made the first successful models for the merger of two carbon-oxygen white dwarfs, and prompted Saio & Jeffery (2000) to attempt models for the merger of two helium white dwarfs. ...

... Дни открытых дверей к юбилею САО РАН (12-14 апреля 2016 г.) . Международная конференция "Dark Ages and White Nights (Spectroscopy of the CMB)" (20-24 июня 2016 г.) . ... Международная конференция MULTI-SPIN GALAXIES - 2016 (26-30 сентября 2016 г.) . Международная астрономическая конференция "Физика звезд: от коллапса до коллапса" (3-7 октября 2016 г.) Архив . ... Подробнее.. ... 10.02.16 . ... БТА в реальном времени . ... Цейсс-1000 в реальном времени . ... Последнее обновление: 22/03/2016 ...

... Single dish or.. ... SEST 15m M ax- Planck- Institut f Эr Radioastronomie European S outhern Observatory Onsala Space Observatory Atacama Pathfinder EXperiment Heterogeneous Arrays: CARMA = BIMA + OVRO + SZ Array (8 3.5m telescopes) SUP submitted Juniper 2002 road Flat 2003 move OVRO 2004 move BIMA 2005 full operations Chemistry and Massive Stars: - Embedded at main sequence - Large area heated, shocked - Extensive chemistry Orion as a Hot Core Test Case: Bright lines, complex spatial structure! ...

... Telescopes ћ Binoculars ћ Microscopes . Meade Ultra-High Transmission coatings (UHTC ) Group . ... Meade Standard Coatings: The optical surfaces of all Meade telescopes include high-grade optical coatings fully consistent in quality with the precision of the optical surfaces themselves. ... These specialized, and extremely advantageous, coatings are offered here as the Meade Ultra-High Transmission Coatings (UHTC) group, a coatings group available optionally on many Meade telescope models. ...

Next: Getting the Dispersion Up: Geometric Correction Previous: Geometric Correction . For optimum results, it is important to use a comparison spectrum with as high a signal-to-noise ratio of the lines as possible. ... The algorithm detects lines whose strength exceeds a certain threshold (parameter THRES ) above the local background. ... The command IDENTIFY/LONG allows an initial interactive identification, by wavelength, of some of the detected lines. ...

... A2638 Date Received: 2011-Feb-14 13:39:09 Technical Page Proposal Type: General Category: Sub-Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: Urgent Astronomy Spectroscopy Extragalactic 4 Hours Radio Line Observations: An Educational Pro ject using the Arecibo 305m Tele- scope ABSTRACT: The increased remote observing capabilities of astronomical observatories allow their use in higher education. ...

... In the late 70s, high speed (several hundreds km/s) plasma flow events were found in the plasma sheet boundary layer, PSBL (e.g., Lui et al., ... Angelopoulos, V., Baumjohann, W., C. F. Kennel, F. V. Coroniti, M. G. Kivelson, R. Pellat, R. J. Walker, H. L hr, and G. Paschmann, Bursty bulk flows in the inner central plasma sheet, J. Geophys. Res. ... Baumjohann, W., G. Paschmann, and H. L hr, Characteristics of high-speed ion flows in the plasma sheet, J. Geophys. ... Lui et al, J. Geophys. ...

Star formation is often best manifested by bright H II regions.These are regions of hydrogen which have been ionized by ultraviolet photons which are emitted from massive stars (typically stars more than 20 times the mass of the Sun). ... A narrowband filter image centered on this wavelength will then readily reveal these H II regions and hence the current sites of star formation in a galaxy, The luminous blobs that can be seen here are all H II regions . ... NGC 3558 Visual . NGC 3558 Infrared . ...

... For HP-UX 9.X: Upgrade to 10.20 . For HP-UX 10.[ 00|01|10]: Upgrade to 10.20 . ... This will allow you to configure the size of the TCP connection lookup hash table. ... If folks are running Apache on a PA-8000 based system, they should consider "chatr'ing" the Apache executable to have a large page size. ... The change can be validated by running Glance and examining the memory regions of the server(s) to make sure that they show a non-trivial fraction of the text segment being locked. ...

This astrostatistics session will honor the memory of Alanna Connors. Alanna was a pioneer in the investigation and development of statistical methods required for the analysis of high energy data. The session will provide a historical perspective on Bayesian methods, highlight the topics where the contribution made by Alanna were particularly important, summarize current analysis challenges and discuss future perspectives. ... 131.02 Promoting widespread use of Bayesian analysis . ...

Solar High Resolution Studies . ... Dynamic magnetic fields continuously emerging from the solar interior on a wide range of scales, and their interaction with convectively-driven plasma flows, play a major role in shaping the whole solar atmosphere. Even though the fundamental spatial scales of turbulence and magnetic fields are still unreachable with present-day telescopes, polarimetric observations at the highest possible resolution will allow important insights into these issues. ...