... They are concerned with Attitude Control System of the spacecraft, satellite visibility from tracking stations, limits on the satellite autonomous operations during the orbit, and needs for auxiliary operations with the spacecraft. ... Among the operational constraints the most important one is the number of programmed slews per orbit, which determines the maximum number of radio sources to be observed during one orbit. ... System temperature (K) . ... Progress of the RadioAstron Project in Pictures...

Еще в разделе: (Показать все результаты (>133) - www.asc.rssi.ru/ )

... Observatory . ... Science . ... Science Users Information > Science Publications > Science Announcements > Restricted Services from 21 December to 01 January . ... Science Users Information . Observing Facilities . ... Instrumentation Development . Future Facilities and Development . ... Observing with ESO Telescopes . ... Data Handling and Products . ... Science Data Products Forum . ... Science Archive Facility . ... ESO Data . ... ESO Data Access Policy . ... ESO Science Newsletter . ...

Еще в разделе: (Показать все результаты (>66320) - www.eso.org/ )

• ESO - Science Announcements
• ESO - ALMA
• ESO - The Origin and Fate of the Sun: Evolution of Solar-mass Stars Observed

. Weather Conditions . 3.5-m Observing and Staff Schedules . 3.5-m Night Logs . 3.5-m User's Mail Servers . Closure Policy . IAU Circulars (restricted to APO) . Catalog of UV and Optical Standards . Observing On-Site . Other Sources of Information . Staff Directory . Sky Calendar . Return to the APO Home Page

Еще в разделе: (Показать все результаты (>584) - www.apo.nmsu.edu/ )

• Untitled Document
• APO Home Page
• ARC 3.5m: | Passwords

Weekly Bulletin on Solar and Geomagnetic Activity Highlights on 06 - 12.04.2015, Forecast on 13 - 20.04.2015, Carrington Rotation 2162 (27,93.03.2015) SUNSPOT-FORMING ACTIVITY OF THE SUN WAS AT THE AVERAGE LEVEL ALL DAYS. ... BY DATA OF CORONOGRAPHS SOHO AND STEREO WERE OBSERVED > 38 CME FROM WHICH FOUR WERE "PARTIAL HALO II" TYPE. ... R - solar rotations; KP - KIT PEAK solar observatory; EE-date of possible geomag. disturbance in the Earth's environment. ...

Еще в разделе: (Показать все результаты (>675) - www.izmiran.rssi.ru/ )

• http://www.izmiran.rssi.ru/services/saf/archive/en/2015/obzor20151102.en.txt
• http://www.izmiran.rssi.ru/services/saf/archive/en/2015/obzor20150615.en.txt
• http://www.izmiran.rssi.ru/services/saf/archive/en/2016/obzor20160404.en.txt

ATNF Home . About ATNF . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . Mopra radio telescope . ... Parkes | ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... We have not arranged for a particular hotel for conference participants and ask participants to arrange their own accomodation. ...

Еще в разделе: (Показать все результаты (>28084) - www.atnf.csiro.au/ )

• Evolutionary Paths in Galaxy Morphology
• PmWiki | PmWiki / WikiGroup
• ATCA_Report

... Frequency of wobble same as frequency of forcing mechanism (t) + i 2 (t) Ї Helmholtz Centre Potsdam ґ GFZ Ї Consistent estimates of AAM , OAM , HAM computed at GFZ Ї AAM computed from European Centre for Medium-Range Weather Forecasts Ї OAM computed from Ocean Model for Circulation and Tides (OMCT) Ї HAM computed from Land-Surface Discharge Model (LSDM) Ї Ocean and hydrology Sensitivity to Excitation Model GFZ ECMWF AAM OMCT OAM LSDM HAM 1962ґ2010 1971ґ2010 1981ґ2010 1991ґ2010 2001ґ2010! ...

Еще в разделе: (Показать все результаты (>292) - www.gao.spb.ru/ )

... This limited extent suggests that the currents which disturb the field flow somewhere nearby, probably near the auroral arcs. ... Any electric current, however, must flow in a closed circuit, and since it seemed to be caused (like that of the aurora) by processes taking place in distant space, Birkeland proposed that it came down from space at one end of the arc and returned to space at the other end. ... The electric energy needed to drive the current is taken from the motion, which is slowed down....

Еще в разделе: (Показать все результаты (>622) - www.iki.rssi.ru/ )

• Concerning Steady State Corotation of the Io Plasma Torus
• Spacecraft Observing Earth's Space Environment
• Close-up of the Aurora

... Our Sun is part of a huge wheel-shaped collection of stars. ... Astronomers have long suspected it was a very massive black hole, and that every galaxy had such a central mass, created early in the history of the universe. ... However, unless that object happens to be headed directly at the black hole (a relatively small target) it will just swing around and fly away again, like a comet making a pass at the Sun. The velocity acquired in falling towards the black hole also helps it escape. ...

Еще в разделе: (Показать все результаты (>984) - www.cosmos.ru/ )

• Planetary Magnetism
• Spacecraft Observing Earth's Space Environment
• Multipoint correlations of the solar wind parameters observed by several

... The choice of the spectrograph design (Fig.2) is determined by the quantity R, the overall dimensions of the PF cage and the restrictions on the rigidity of the structure of the device. ... As the camera's objective a fast 4-lens aplanat is used having a focal distance F cam =140 mm and a relative aperture of 1:1.8, the resolution at the centre is no less than 80 gr/mm, that over the field at a distance of 3 mm from the edge along the frame ( ) diagonal is 35 gr/mm. ...

Еще в разделе: (Показать все результаты (>615) - jet.sao.ru/ )

• Emission molecular bands
• These galaxies were observed (Project: vortex)
• Fabry-Perot Interferometer: Gallery Old

... Uniformity of size and appearance of all the illustrations of the same type should be strictly observed. ... The numbers of curves, straight lines, etc., should be written in italics without any brackets both at an illustration and in text. ... In inscriptions, when the parameters of a curve are listed, the numbers of curves and notations of the parts of an illustration (a, b, etc.) should be placed in brackets prior to the corresponding parameters (a dash is not used). ...

Еще в разделе: (Показать все результаты (>208) - mavr.sao.ru/ )

• Ratan-600 schedule archive
• Galaxy sector, archive 2012
• Measurement of the dark halo shape in polar ring galaxies

... A1368 Date Received: 1999-Oct-04 10:06:54 Technical Page Proposal Type: Regular General Category: Astronomy Sub-Category: Spectroscopy Observation Category: Extragalactic Total Time Requested: 20 hr Hours Proposal Title: PKS1004+13: The Rosetta Stone for BAL Quasars? ABSTRACT: It is now recognized that the material producing broad absorption lines (BAL) in some quasars is in fact present in essentially all such objects, only orientation restricting the observed occurrences to 15%. ...

Еще в разделе: (Показать все результаты (>5048) - www.naic.edu/ )

• http://www.naic.edu/vscience/schedule/2014Spring/WolszczantagA2856.pdf
• Spectral-Line Observing
• CHVCs observed with Arecibo

... International Space Station in Transit . ... But while Wednesday's leisurely transit of Mercury across the Sun entertained observers all over the dayside of planet Earth, the audience for this lunar transit was more restricted. ... Can you spot the planet? The diminutive disk of Mercury, the solar system's innermost planet, spent about five hours crossing in front of the enormous solar disk yesterday (Wednesday, May 7th), as viewed from the general vicinity of planet Earth. ... Galaxies.. ...

Еще в разделе: (Показать все результаты (>55421) - www.astronet.ru/ )

OptInt PmWiki . Restricted MROI Fast Tip Tilt Private / . ... Attach | ... MROI Delay Line Design Contract . ... Design Documentation . ... MROI DL Production SW Contract . ... Preliminary Design Review . Software Design Documentation . ... MROI Fast Tip-Tilt Contract . ... Design Documents . ... MROI FT SW Architecture . ... MROI . Tip-tilt Systems . ... Restricted Wiki . ... MROI FTT Contract Private Material . ... MROI DL Design Contract Private Material . ... PmWiki . ... PmWiki FAQ . ...

Еще в разделе: (Показать все результаты (>3216) - www.mrao.cam.ac.uk/ )

• OptInt PmWiki : Restricted MROI Fast Tip Tilt Private | Edit
• OptInt PmWiki : Restricted MROI Fast Tip Tilt Private | History
• Example of an OOF analysis for the GBT

Next: Rotation Periods of ZAMS stars Previous: T Tauri Stars . ... The first attempts to directly measure periodic modulation of T Tauri stars occurred in the early 1980s. Rydgren & Vrba (1983) observed four PMS stars using photoelectric photometry over a period of seven consecutive photometric nights. ... Because the spot lifetime is much longer than the rotational period, the observed effect will be a modulation of the light from the star synchronously with the rotation period. ...

Еще в разделе: (Показать все результаты (>1577) - hea-www.harvard.edu/ )

• Period Criteria
• Rotation Periods of PMS Stars
• ChaMPlane Bulge Windows Survey

Astronomers at Armagh Observatory observed the partial eclipse of the Sun on 29 March under unusually good conditions. ... The images, taken by astronomer Miruna Popescu, shows the eclipse as seen from the Armagh Observatory at around 11:30 (Summer Time) on 29th March, and the way it was observed by astronomer Apostolos Christou with a small portable telescope equipped with a filter to protect against the Sun's dangerous radiation. ... For more images from Armagh see: Miruna Popescu's Pages . ...

Еще в разделе: (Показать все результаты (>2341) - star.arm.ac.uk/ )

• Armagh Observatory
• Transit of Mercury 2003
• Broadening of Si VIII lines observed in the Solar polar coronal holes

... Following the full moon on Monday, March 24, I was able to make use of a few brief periods totalling about an hour and a half before the Easter weekend to make some 160 galaxy observations at home in Coonabarabran using the 0.41m telescope. ... Because of being on holidays my resources for comparison purpouses were rather limited, and so I had to rely upon amateur contacts in Queensland to verify my memory of this galaxy, and also to obtain visual confirmation of the supernova. ...

Еще в разделе: (Показать все результаты (>1843) - www.sai.msu.su/ )

• A Plea for Support of the Space Program
• Light Curve Templete/Observing Form For Visual SNe Observers.
• APOD: 2011 December 6 - Jupiter Rotation Movie from Pic du Midi

... Observing . ... Home Observing High Line ? Solar Observing . ... High Line . High Line - Solar Observing . ... 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 . ... The AAA hosts solar observing on the High Line one Tuesday afternoon each month from April through August. ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

Еще в разделе: (Показать все результаты (>620) - www.aaa.org/ )

• Central Park ? Solar Observing ? Amateur Astronomers Association of New York
• Poe Park, The Bronx ? Solar Observing ? Amateur Astronomers Association of New
• Amateur Astronomers Association of New York ? Amateur Astronomers Association

Next: Retrieving demonstration and Up: Echelle Reduction Method Previous: Echelle Reduction Method . ... User data is a set of echelle images, observed with the same instrument configuration, including a wavelength calibration image ( WLC ), a flat field image ( FLAT ) and astronomical objects OBJ . Optionally, this set will include standard stars ( STD ) to be used in the absolute or relative flux calibration, and dark images ( DARK ). ... Rotation of input frames. ...

Еще в разделе: (Показать все результаты (>1195) - www.sao.ru/ )

• Edition of the Table Containing the Cloud Model
• Zeiss Gd20 last observed
• HyperLEDA documentation: compilation of cz measurements (a110)

... Star Atlas . ... Behemoth black hole found in an unlikely place . ... black holes . ... First black holes kept to a strict diet, study shows . ... This frame from the simulation shows the X-rays produced by a black hole (white) and its effects on nearby gas (blue). ... For the first time, we were able to simulate in detail what happens to the gas around those stars before and after they form black holes." ... Yet, despite its strict diet, the black hole had a dramatic effect on its surroundings. ...

Еще в разделе: (Показать все результаты (>5929) - www.astronomy.com/ )

• French National Centre for Scientific Research | Astronomy.com
• Astronomy Magazine - Interactive Star Charts, Planets, Meteors, Comets,
• Web Extra: Astronomers animate one of the largest galaxy clusters ever observed

RTT150 . ... The primary mirror 1 reflects light to the secondary mirror 2 which sends the converging beam of light to the system of four flat mirrors 3, 4, 5 and 6. That allows the beam of light to leave the telescope strictly along its polar axis and be collected in Coude focus. ... That's why at any tube position (for any rotation along the declination axis) beam of light parallel to the principal axis after reflection on mirror 3 follows the direction of declination axis. ...

Еще в разделе: (Показать все результаты (>690) - hea.iki.rssi.ru/ )

• GRANAT Home Page