... We apply Multichannel Singular Spectrum Analysis (MSSA, or extended EOF) technique to filter GRACE data and separate the principal components (PCs) of different periods. We performed data averaging over the large river basins of Russia. ... In every point ij on the map we have time series Aij(tk) of length N. The trajectory matrix for every XAij should be build and incorporated into large block matrix X as follows: X Aij Aij (t0 ) Aij (t1 ) .. ... Sum of PCs 1-10 for particular rivers basins. ...

... Home Gallery Astrophotography (Mostly) Urban Astro-images . Become a member! ... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... Venus and Saturn less than 0.8 degrees apart, Belvedere Castle, Central Park, New York, 9:39 pm, July 1, 2007 by AAA member Tom McIntyre . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

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... Spherical aberration, coma, and astigmatism are also easily observed using the star test. ... Off-axis images are complex. ... Fig. ... Diffraction by a circular aperture as a function of defocus for no aberration Airy Disk 1 wave defocus Less than 1 wave defocus Fig. ... Diffraction by a circular aperture as a function of defocus for third-order spherical aberration Paraxial Focus Small distance inside paraxial focus Moderate distance from marginal focus Immediate neighborhood of marginal focus Fig...

MAIN PAGE . ... LINKS . ... CONTACT . ... Welcome to the Main Page. ... Finally, our members share their expertise by contributing with articles to our internet presence. ... 16/04/2016 . astronomical Themes . ... Join the AAL Seti@home BOINC Team! ... Wheels down, the Space Shuttle era is over: Will you miss the Shuttles? ... For that, please visit the Contact page , where you can find the Web Team contacts along with others. ... SOME LINKS . Astronomical and Space-related OS/2 Software . ...

... Exposure Time Calculator (ETC) . Survey processing . ... VISTA is a 4-m class wide field survey telescope for the southern hemisphere, equipped with a near infrared camera (1.65 degree diameter field of view at VISTA's nominal pixel size) containing 67 million pixels of mean size 0.34 arcsec and available broad band filters at Z,Y,J,H,K s and a narrow band filter at 1.18 micron. A wide field visible camera, if constructed, could also be used on VISTA. ... Tile . ... ESO VISTA Public Surveys . ...

Winer Observatory P.O. Box 797, Sonoita, Arizona 85637-0797, USA . ... 2/3-m Telescope . ... Site . ... Roof Status . ... If you select Winer to provide the site and maintenance for your remotely-operated telescope, your telescope will be housed in the modern roll-off roof observatory seen at left. ... The building computer and most customer telescope control computers are programmed to keep logs to assist in diagnosing problems in moving the roof or telescopes, or in controlling the instruments. ...

Электронная библиотека астронома-любителя. ... библиотека . архив RSN . ... Ru.Space.News: . Ноябрь 2003 . ... I recently read an article that I found initially disturbing, but after reading the information on this site regarding the sun, I feel much more calm. ... A few people have requested more information about the temperature of the sun. The temperature at the center of the sun is about 16 million degrees Kelvin (27 million degrees Fahrenheit), as stated in the article. ...

ПЕРЕЛ?К ПУБЛ?КАЦ?Й СП?ВРОБ?ТНИК?В ГАО . ... Розенбуш А.Э. V482 Cyg - переменная звезда типа R Северной Короны . ... Odessa Astron. ... Розенбуш А.Э. Новые звезды и феномен R Северной Короны . ... Розенбуш А.Э. Потеря массы звездами типа R Северной Короны . ... Розенбуш А.Э. Распределение энергии в спектрах переменных звезд типа R Северной Короны . ... Розенбуш А.Э. Нормальные показатели цвета и абсолютные звездные величины избранных переменных звезд типа R Северной Короны . ... Astron. ...

Crater Gassendi . ... I made this drawing was made on the 26th of november 2001. If you compare this one with the previous drawing of Gassendi (below) the differences are clear. ... This drawing was made on the 28th of september 2001. After nearly a full month without observations I had a one hour gap between the thicker clouds. ... This drawing was made on the 29th of august 2001. ... This drawing was made on the 27th of august 2001. ... This drawing was made on the 25th of august 2001. ...

... At hard energies (3.5-7.5 keV), we detect a nearly circular shell of outer radius 2.8 (13 kpc). ... We find that the observed density and temperature jumps are consistent with a Mach M 1.2 shock (for monoatomic gas with = 5/3). ... Key words: Galaxy; X-ray ; M87. clusters (kT 3 - 10keV). ... These weak shocks, if there is sufficient viscosity, can provide sufficient energy to maintain the thermal energy of the gas in the cooling core of the Perseus cluster (see detailed studies including [8, 7]). ...

M obile A stronomical Sy stem of TE lescope- R obots MASTER-II Kislovodsk Lomonosov Moscow State University, Sternberg Astronomical Institute , Moscow Union "Optic" , Kislovodsk Solar Station Latitude = 43 o љ44'.767љN; Longitude = 42 o љ31'.417љE; Altitude = 2067љm MASTERљIIљ(8љsquareљdegress) + MASTERљVWF(VeryљWideљFieldљCameras (FOV=800 square degrees, Timeљresolutionљupљtoљ150љms, with unfiltered m_lim=14m on 5 sec. exposure, and ~10.5m with 0.15 sec) . ... 11h 38m 38.0s , -09d 59m 59s) . ...

... Full silvery Moon illuminates terrain. ... Begun a next moon eclipse, when Land barriers a Moon from the Sun and throws its shade on it. ... Drawing 1. ... Drawing 6 Drawing 6 shows a splendid photo of full moon eclipse 18-19 november 1975 during is packed phases doing Dennis de Chikko. ... Eclipse, which will occur 9 november 2003, is a repetition through сарос (cycle of repetitions of eclipses equal 6585 days or 18 years 11 days) full moon eclipse from 28 octobers 1985 with the maximum phase 1,07....