... Since moonshine is really reflected sunlight, the full Moon is on the average slightly brighter in mid-winter, when Earth is closest to the Sun. In addition, the distance of the full Moon also varies, due to the ellipticity ("eccentricity") of the Moon's orbit. On 22 December, 1999, the two effects combined to produce the brightest full Moon of the century. ... This year will be the first full moon to occur on the winter solstice, Dec. 22nd, commonly called the first day of winter. ...

... Solar System Data . Tables of many physical and orbital parameters for each of the major bodies in the solar system. ... Lists of the biggest, smallest, brightest and densest bodies in the solar system and a list of those bodies least unsuitable for life. ... Lists of which bodies were discovered in each century since Galileo. ... Some interesting linguistic tidbits relating to the planets. ... Astronomical Names . ... The sites around the Net where The Nine Planets is located. ... Appendices .. ...

... What are the fluxes of the stars? ... Volume sampled is no longer 4/3 pi r cubed due to curved space-time Want to derive population properties brightness, size, etc - as function of distance (therefore, cosmic time) But - biases in sample Biases NUMBER OF STARS VS MASS Eddington Bias: in astronomy, there are always more little faint things than big bright things. ... Suppose there are 10 stars of mass 0.5 and 100 stars of mass 0.4, and you have a 20 percent error on measuring the mass. ...

The Virgin. ... This is a double system with a long orbit and a period of 171 year. The maximum distance between them was 6" in 1925 and it will be 0,5" in 2011. The light of the each component is 3,5 of star value. Near the Virgin star r there is an interesting galaxy M 87 (or the radiogalaxy of the Virgin A) aproximetly the 9th star value. ... The most bright quasar (3C 273) lays in the Virgin, but it is able to see this quasar only in a big telescope. ...

... October 18, 1999 . NGC 3603: An Active Star Cluster . ... Explanation: NGC 3603 is home to a massive star cluster, thick dust pillars, and a star about to explode . The central open cluster contains about 2000 bright stars, each of which is much brighter and more massive than our Sun . ... These stars are less massive than our Sun, demonstrating that great numbers of low-mass stars also form in active starburst regions . ... About APOD > . ...

Bullfrog King by Bert Maine C Em Am C F G C I went for a walk late one night and talked with the bullfrog king C Em Am C F G C He told me of the moon and the big green pond and several other things F Em D7 G I've talked with many , many fascinating lads and it's been most interesting C Em Am C F But the very best tales that I've ever heard spun were the ones from the G C F G C Em Am C F G C Bullfrog ...

. The measuring unit of the electrical impedance tomograph. The belt with electrodes for measurements on thorax . The EIT animation reconstructed from the data measured on the volunteer's thorax: . Right . Anterior . The animation represents one respiratory cycle, the cardiac pulsations are visible also. The static visualization is demonstrated: 1 - spinal column, 2 and 3 - right and left lungs, 4 - heart. The brightest colors correspond to highest conductivity .

Тема : Обсерватория СОХО (SOHO), SolarMonitor и SDO, все о Солнце .. Показать сообщение отдельно . ... Re: Обсерватория СОХО и все о Солнце . ...

... Submitted by Paul Benni on 11/27/2013 18:38:14 . Comet C/2013 R1 Lovejoy (November 8) . Morning image (Nov. 8) of Comet Lovejoy. ... C8 EdgeHD SCT with Hyperstar (f/2.1) and ST-8300C ccd. Image is uncropped from the Hyperstar setup. Compare to my Comet ISON image with the same image scaling. Interesting how much brighter and larger Comet Lovejoy is now compared to ISON. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

... Bad Astronomy . ... Bitesize Astronomy . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... When Venus is on the far side of the Sun, we see the entire near side lit by the Sun. ... When it is on the near side of the Sun, it shows a beautiful thin crescent, because it is between us and the Sun and we see the mostly unlit dark half. ... To see this for yourself, draw a circle one centimeter across, then, next to it, draw a circle 6 centimeters across. ... 2008 Phil Plait. ...

. Первая страница Назад Продолжить Последняя страница Обзор Графические объекты .

... The ROSAT Bright Survey: II. Catalogue of all high-galactic latitude RASS sources with PSPC countrate CR > 0.2 s -1 . ... 1S We present a summary of an identification program of the more than 2000 X-ray sources detected during the ROSAT All-Sky Survey (Voges et al. 1999) at high galactic latitude, |b| > 30degr , with countrate above 0.2 s -1 . This program, termed the ROSAT Bright Survey RBS, is to more than 99.5% complete. ...

... These reports are submitted for engineering work accomplished during bright time and maintenance shutdowns. ... 010531: May 2001 Bright Time Engineering Work Summary . ... 020102: January 2002 Bright Time Engineering Work Summary . 020202: February 2002 Bright Time Engineering Work Summary . ... 030101: January 2003 Bright Time Engineering Work Summary . ... 040101: January 2004 Bright Time Engineering Work Summary . ... 050101: January 2005 Bright Time Engineering Work Summary . ...

Lab . Main page News People . ASA . Master . Master net Homepage . ... MASTER . ... About Space Monitoring Laboratory, scientific directions, instruments, contacts . People, who work in lab . Latest news and news archive . ... 10.08.2011 . ... All news ...

... Aerobatics team "Strizhi" ("Swifts") is a member of the 237-th Proskurov Guards Aircraft Demonstration Centre rewarded with the Red Banner, Kutuzov and Alexander Nevsky Orders named after three-times Hero of the Soviet Union Air Force Marshal I.N.Kozhedub. ... Aerobatics team "Rus" ("Russia") - Under this symbolic and proud name there performs its flights a synchronous aerobatics team of Viasemskiy Aviaclub "ROSTO". ... Info: Industry news On-line Data Company ATLAS news Events We in press Contact ....

Elliptical galaxies Elliptical galaxies Rough subdivision · Normal ellipticals. ... Dwarf ellipticals (dE's). ... E dE BCD dSph 1013 - 1014 108 - 1013 107 - 109 109 107 - 108 300-1000 1-200 1-10 3 0.1­0.5 100 10­100 1­10 0.1­10 5­100 Elliptical galaxies Shapes of elliptical galaxies Elliptical galaxies Shapes of elliptical galaxies Elliptical galaxies Shapes of elliptical galaxies Elliptical galaxies Shapes of elliptical galaxies Elliptical galaxies ...

NAUTICAL ASTRONOMICAL YEARBOOK for 2017 (in Russian) . Foreword . ... NAY) is the daily visual geocentrical equatorial ephemerides of brightest navigational stars ? the Sun, the Moon, four major planets (Venus, Mars, Jupiter, Saturn) and of the 69 brightest stars, and the time of the rising and setting of the Sun and the Moon, the time of the beginning and the end of civil and navigational twilights, the azimuths of the upper limb of the Sun on rising and setting. ...

... This program was created for correlating chosen regions in the series of fts images. ... Chosen regions' . ... In this section the program counts the integral for each region of the grid for each image. ... As a matter of fact, the integral is total brightness of the region and it is counted by 'int_tabulated' IDL function. ... In addition, the program will show the count of the regions which correlate with the corresponding region (the brighter region means the bigger count) and its contour. ...

... Using a simple 2-D Gaussian Point Spread Function (PSF) on a constant (flat) sky background, I derive a theoretical photometric and astrometric performance model for analytical and digital PSF-fitting stellar photometry. ... The photometric performance is maximized when either the effective background area or the effective-background-level measurement error is minimized. ... An important, but frequently ignored, noise source is the uncertainty of the measurement of the effective background level ( )...

Measurement of Sky Brightness at the Iranian National Observatory Davoud Afshari1 and Sadollah Nasiri1,2 1Physics Department, Zanjan University, Zanjan 45195-313, Iran; Institute for Advanced studies in Basic Science (IASBS), Zanjan 45195-1159, Iran; Measurement of light pollution 2 Introduction Among 34 candidate sites at the central part of the country, 5 sites namely Garkesh (in Kashan ), Kolahbarfi(in Kashan ), Deynava (in ... One of these is light pollution. ...