Transient radio emission from the PSR B1259-63 system near periastron . S. Johnston (RCfTA, University of Sydney, Australia), . ... Observations of the pulsar - Be-star binary system PSR B1259-63 around the 1994 and 1997 periastron encounters, using the Australia Telescope Compact Array at four frequencies between 1.4 and 8.4 GHz, and the Molonglo Observatory Synthesis Telescope at 843 MHz, show a relatively strong and rapidly varying but unpulsed radio source. ...

... Energy . ... Solar Wind . ... Field . ... The Sun is our nearest star and the source of energy for life on Earth. ... For centuries astronomers wondered whether they were clouds floating in the Sun's atmosphere, but we now know that they really are huge regions of magnetic field, about as intense as the field at the poles of an iron magnet. For some reason the field slows down the flow of heat from the Sun's interior and keeps sunspots slightly cooler than their surroundings. ... Solar Eclipses . ...

... 2 Columns At the present time, the REGION table is de ned for a two-dimensional space. ... ROTANG (rotation angle): for rotated elements; like X and Y, this column needs to contain vectors of suфcient length. ... Table 1: REGION Table SHAPEs SHAPE X Y R ROTANG Point X Y Circle Xcen Ycen R Ellipse Xcen Ycen Rmaj ; Rmin Angle Annulus Xcen Ycen Rin ; Rout Elliptannulus Xcen Ycen Rinmaj ; Rinmin ; Angin ; Routmaj ; Routmin Angout Box Xcen Ycen Xsize ; Ysize Rotbox Xcen ...

Harvest Moon . ... The Harvest Moon refers to the Full Moon that comes closest to the autumnal equinox, or the first day of autumn. Depending on the year, the Harvest Moon can fall anywhere from two weeks before to two weeks after the equinox, which arrives annually on or near September 23. ... It was once common knowledge that at the vicinity of Full Moon, the Moon rises around sunset, shines all night long and sets around sunrise. ... Re-published on Astronomy Net with permission of the author. ...

... That star is called Sirius, and it is the brightest star in Earth's nighttime sky. ... But the other reason Sirius is so brilliant in our nighttime sky is that it is so close; Sirius is the nearest neighbor star to the Sun that can be seen with the unaided eye from the Northern Hemisphere. ... and even the nearest other star (alpha Centauri, visible from the Southern Hemisphere) would be 6,000 miles away. ... Sun . ... For example, alpha Centauri is the brightest star in the constellation Centaurus....

... We have developed an integrated system that performs astronomical observations in Near Infrared bands operating two-dimensional instruments at the Italian National Infrared Facility's ARNICA and LONGSP . ... The user interface is organized as widget-based X11 client. ... 1993; Di Giacomo et al. 1993). ... Moreover, if the interprocess communication interface includes support for networking, the software immediately becomes network distributed software. ... DESQview/X User Guide 1993, Quarterdeck . ...

1,2 - Modifyted Richter-Slefogt Camera (355mm, 200 mm) The system was designed by V.Yu.Terebizh in 2001 (terebizh@crao.crimea.ua), and then has been made by Gennadiy Borisov . ... Very Wide Field Camera near Kislovodsk: MASTER WFC-Kislovodsk . Up to 1200 square degrees up to 13 m. Very Wide Field Camera near Moscow (40 x 60 square degree) (CCD 1392 x 1040 pix, Sony). ... This system can discover and measure satellites and space refuse parameters to within 0.1 ang.sec. precision. ...

... There are many theories on what will destroy planet Earth, such as nuclear annihilation, global warming or the Sun becoming a red giant. ... It was founded by the board of directors of the magazine `Bulletin of the Atomic Scientists' to draw the public's attention to the nuclear threat, midnight being the time when Doomsday will occur. ... The board has said that climate change has now become the second biggest threat to the existence of the Earth after global nuclear war. ...

... Image Quality of the VLT . Total Optical Control . First light for the ESO VLT unit telescope 1 occurred during the workshop. ... The image shown (Figure 1 ) here was obtained with the VLT on May 16, 1998, in red light (R band), i.e. while the mirror was still uncoated. ... In this diagram (FIgure 2), the measured image quality of the VLT UT1 astronomical images is plotted versus the ``seeing", as measured by the Seeing Monitor, a small telescope also located on top of the Paranal Mountain. ...

PENTICTON SOLAR RADIO FLUX VALUES (from SGD Explanation of Data Reports) Daily Solar Flux Values - Penticton -- Daily measurements of the integrated emission from the solar disc at 2800MHz (10.7cm wavelength) have been made by the National Research Council of Canada since 1947. ... The data are tabulated in two forms: the "observed flux" (S), and the "adjusted flux" (Sa). ... The "observed flux" values are useful in ionospheric physics and other terrestrial consequences of solar activity. ...

. 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.

MINUTES of the RadioAstron Teleconference on March 16, 2011 N. Kardashev chaired the teleconference. ... He confirmed the priority status of the mission with the launch date scheduled for late June 2011. ... N. Kardashev reminded the participants to send their willing to visit the launch site to M. Lisakov not later than March 20 2011. ... New Zeland JIVE, The Netherlands ASC, Russia NRAO, USA NRAO, USA ASC, Russia NRAO, USA ASC, Russia MPIfR, Germany ASC, Russia NRAO, USA ...

... 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! ...

Atmospheric transparency in the optical and near IR range above the Shatdzhatmaz summit O.Voziakova (Sternberg Astronomical Institute, Russia) Atmospheric extinction in the MASS spectral band Atmospheric transparency in near IR range Example of a good photometric night. ... Distribution of atmospheric extinction in MASS Median = 0.23 mag 1-st quartile = 0.20 3-d quartile = 0.27 mag Vertical green line represents theoretical Rayleigh extinction for Shatdzhatmaz (0.16 mag). ...

NMW survey overview . Access image archive . ... The New Milky Way survey aims to detect bright (V<13.5) optical transients near the Galactic plane using an automated wide-field (8x6 deg.) system capable of surveying the whole Milky Way area visible from the observing site in one night. ... All images obtained during the transient search survey are available online (please use the image archive access form ). ... Images per field: . ... Images per night: . ... Milky Way imaging time: . ...

... V.V. Busarev, Sternberg State Astronomical Institute, Moscow University, . ... V. V. Busarev1, M. N. Taran2, V. I. Fel’dman3 and V. S. Rusakov41 Lunar and Planetary Department, Sternberg State Astronomical Institute, Moscow State University, 119992 Moscow, Universitetskij pr., ... 1 Sternberg State Astronomical Institute, Moscow University, Universitetskij pr., ... V. V. BUSAREV, Sternberg State Astronomical Institute, Moscow University, Russian Federation (RF) (E-mail: busarev@sai.msu.ru); . ...

National Aeronautics and Space Administration . ... Jeffrey N. Williams (COLONEL, U.S. ARMY, RETIRED) . ... Williams has served in the Extra-Vehicular Activity (EVA), Space Station, and Soyuz Branches of the Astronaut Office, led the development of a space shuttle cockpit upgrade, and completed temporary assignments at Marshall Space Flight Center supporting the test and evaluation of the International Space Station Laboratory Module and at NASA Headquarters in support of legislative affairs. ...

... 2001 . ... Сегодня: 10 апреля 2016 г. Американский исследовательский зонд NEAR Shoemaker находится сейчас на поверхности астероида Эрос, на который он сел в феврале 2001 г. До этого в течение целого года он вращался вокруг этого астероида, периодически меняя параметры орбиты и исследуя Эрос со всех сторон. ... Тем не менее, под занавес миссии терять все равно было нечего, и зонд NEAR по команде с Земли направился к поверхности астероида, до последней секунды фотографируя то, что находилось внизу. ...

... Анк а дня . ... Apod . Lpod . ... NEAR Project , JHUAPL , NASA . Image Montage by Patrick Vantuyne . Пояснение: 12 февраля 2001 года космический аппарат NEAR-Шумейкер совершил мягкую посадку на поверхность Эроса ? ... Специалист по стереосъемке Патрик Вантюн (Patrick Vantuyne) составил этот фотомонтаж из последних снимков, полученных при посадке, тщательно отождествляя перекрывающиеся участки на последовательности снимков. ... Источник информации: Астрономическая картинка дня . ...

... public class EDM . ... Euclidean Distance Map: The value of each pixel is the distance to the nearest background pixel (for background pixels, the EDM is 0) - Ultimate Eroded Points (UEPs) are maxima of the EDM. ... static int . ... Unit in old make16bitEDM: this pixel value corresponds to a distance of one pixel. static int . ... int . ... For compatibility with previous versions of ImageJ only. public FloatProcessor makeFloatEDM ( ImageProcessor ip, int backgroundValue, boolean edgesAreBackground)...