... Discussion of Declination Drive Design . ... It is held in my personal stock of parts to replace a drive that might go out of service for some reason on one of the two LX200 telescopes that I am responsible for keeping in good repair.  ... The photocells detect light from a pair of small lights through the encoder mask and encoder wheel encased in the gear box housing. ... In one case of declination drive runaway, the cause was breaking of one of the leads to one of the photocells.  ... All fixed!! ...

The results of a search for ultrarapid variability of galactic water maser sources at the wavelength 1.35 cm on a timescale of several minutes to 1 h are reported. A special observational technique was developed. ... Among those, several sources that have shown such variability were found. ... Clear evidence for such a variability type was found in at least two sources: W49N and W33B. Variability of this kind displays itself only in certain states of the water masers. ...

... We are from Siberia, city Krasnoyarsk. ... We don't know the meaning of the word "Siberia" in our time. ... But we believe that this word comes from the tatarian language and means "sleeping . ... One of the streets is named after voivode Andrey Dubenski who put ashore a detachment of 300 cossaks in spring of 1628 right where the little but rough Kacha river falls into the Yenisei. ... This word of Tungus origin "ionessi" means "high water".Some windows of our school face at the Yenisei. ...

... ARTICLE: Ein aussergewЖhnlicher Abend mit John Dobson in Saarlouis . ... John L. Dobson, der Erfinder des weltbekannten Dobsonteleskops und BegrЭnder der „Sidewalk Astronomers“ zu Beginn der 60er Jahre in San Francisco Эberraschte sein Publikum am vergangenen 14.September 2006 bei einem Vortrag in Saarlouis mit seinem direkten und unverblЭmten Stil. ... Hierzu braucht man Oeffnung, was Anfang der 60er Jahre im Amateurbereich fehlte. ... Ein aussergewЖhnlicher Abend mit John Dobson in Saarlouis . ...

The new view on the population of Galactic open clusters A.E.Piskunov1, N.V.Kharchenko2, S.RЖser3, E.Schilbach3, R.-D.Scholz4 1 2 3 4 Institute of Astronomy, Moscow, Russia Main Astronomical ... Observatory, Kiev, Ukraine Astronomisches Rechen-Institut, Heidelberg, Germany Astrophysikalisches Institut Potsdam, Germany What are open clusters and what do they teach us Groups of Population I ... Cluster complexes: OCC-1 = Gould's Belt cluster complex? ...

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 . ...

Statistics of sunspot activity . ... The solar regions . ... NOAA 11300's . ... The single sunspot with fine penumbra was crossed the Sun disc since 25.08 to 6.09 across the middle latitudes of the Northern hemisphere. ... The fine sunspots were observed at the 20th parallel of the Northern hemisphere since 27.09 to 2.10, in the Western part of the Sun disc. ... The fine sunspots were observed at the middle latitudes of the Northern hemisphere since 6.11 to 10.11, in the Western part of the Sun disc. ...

... Освоение космоса (Модератор: Chepurny ) > . E-ELT (European Extremely Large Telescope) . ... Благодарностей: 0 . ... 13 Май 2010, 12:14:53 ? Европейский чрезвычайно большой телескоп" (European Extremely Large Telescope - E-ELT) будет построен в горах пустыни Атакама, объявила на днях Европейская южная обсерватория. ... Ответ #1 : 13 Май 2010, 12:29:34 ? ... Цитата: ds40a от 13 Май 2010, 12:29:34 Field of view: 10 arcminute diameter . ... Цитата: ds40a от 13 Май 2010, 13:28:02 И я о том-же. ...

... General astronomy . ... PHYSICAL CONSTANTS.. ... Nobel Laureates in Physics 1901-2002 . ... Lectures Astronomy-161 "Solar System" (Also it contains info about History of Astronomy) . ... The History of Science . ... College-Level Astronomy Courses - at American, Australian Universities and Colleges . ... Messier: . ... Science . ... Scientific American . ... JOURNAL OF COMPUTATIONAL PHYSICS . ... Scientific Journals . ... American Physical Society Journals: Physical Review, Review of Modern Physics ...

... Center for International Education . ... Social and Humanitarian Research Institute as a structural department of V. N. Karazin Kharkiv National University was founded by the decision of the Academic Council of the University on April 29, 2008. ... In spring, 2013 the team of Social and Humanitarian Research Institute has implemented the study of the 1-4 year students' opinions regarding the website of V.N. Karazin Kharkiv National University, as well as the University faculties websites. ...

... Tte tables of ionosphere and plasmasphere parameters are contained in a file param.tbl. ... Latitude Longitude Numbers of tables for (degree) (degree) Month Wm=10 Wm=100 Wm= 150 80 30 March 1 - 3 397-399 793-795 80 150 March 4 - 6 400-402 796-798 80 270 March 7 - 9 403-405 799-801 60 30 March 10 - 12 406-408 802-804 60 150 March 13 - 15 409-411 805-807 60 270 March 16 - 18 412-414 808-810 40 30 March 19 - 21 415-417 811-813 40 150 March 22 - 24 418-420 814-816 40 270 ...

The revision of the MASS/DIMM star catalogue N. Shatsky, V. Kornilov March 16, 2008 Abstract The compilation of the (updated) version of the MASS (MASS/DIMM) device target catalogue is described. ... Then the list was cleaned according to following criteria: I. Remove stars too faint for a MASS device. ... Here the color equation of the Sternb erg device was taken: M AS S mag = V mag + 0.45 (B - V ); stars with M AS S mag > 3.2 were removed. ... This was made based on the GCVS4.2 catalogue data. ...

Introduction to PLASMA ASTROPHYSICS (Selected 10 lectures) Boris V. Somov Astronomical Institute and Faculty of Physics Moscow State University Pushino-na-Oke, 2008 Contents Ab out These Lectures 1 Particles and Fields: Exact Self-Consistent Description 1.1 Liouville's theorem . . . . . . . . . . . . . . . . . . . 1.1.1 Continuity in phase space . . . . . . . . . 1.1.2 The character of particle interactions 1.1.3 The Lorentz force, gravity . . . . . . . . . 1.1.4 Collisional friction . . . . . . . . . . . .

... 000, 1­12 (2009) Printed 11 February 2010 A (MN L TEX style file v2.2) Analytical approximations of K -corrections in optical and near-infrared bands I1gor V. Chilingarian1 2 ,2,3 , Anne-Laure Melchior 1,4 and Ivan Yu. ... Received 2010 February 01; in original form 2009 August 14 ABSTRACT To compare photometric properties of galaxies at different redshifts, the fluxes need to be corrected for the changes of effective rest-frame wavelengths of filter bandpasses, called K -corrections. ... Table 1. ...

Molniya Triplant Aircraft . ... Unlike the MOLNIYA-100 triplane roughly similar to it in dimensions the MOLNIYA-300 though is supplied with no piston, but turbojet engines. ... Like the MOLNIYA- 100 this jet aircraft can use airdromes with the artificial coating, as well as the ground ones. Molniya-300 aircraft Main Characteristics . ... Maximum payload, kg . ... Take-off mass, kg . ... with maximum payload . ... with maximum fuel load . ... Maximum . ... Landing . ... Company Details . ...

. Press release . 17.03.2001 . Press release . March 17 2001 09:00 (Moscow time) . The operation with OC "Mir" scheduled for March 16 is complete. The recent telemetry data confirmed the OC"Mir" remains pressurized, the thermal condition is normal.The batteries generate enough electric power to provide onboard systems nominal performance and register trajectory parametres. The next status report will be issued on March 18.

... A rough estimation is that in the United States there is one planetarium per 100,000 population, ranging in size from the Hayden Planetarium's 20-meter dome seating 430 people, to three-meter inflatable portable domes where children sit on the floor. ... Together dblo associates make a huge impact in the architecture, interior design and development arena in London. ... With the holidays around the corner what better way to spoil your family than with your very own private home cinema. ...

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