Astronet Поиск по астрономическим сайтам English Russian
       
        Точная форма слов   О проекте   Сайты   Справка
Найдено документов: 294050 (175 сайтов) ---- Время поиска: 0.55сек.   

1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | След.

Показаны документы, содержащие фрагменты текста из документа
http://www.naic.edu/~astro/guide/node16.html.

1. Sky Background
The sky background can contribute significant Poisson noise in broad and medium band filters, and must be taken into account during noise calculations. The actual sky brightness depends on the heliocentric ecliptic coordinates (latitude and longitude) in a manner summarized in Table 6.3 . ... 22.4 . ... An average sky brightness of V=22.9 mag arcsec -2 is assumed. ... Values for other filters or sky brightnesses can be computed from Table 6.2 , Table 6.1 , Table 6.3 , and Equation 6.2. ...
[ Сохраненная копия ]  Ссылки http://www.stsci.edu/instruments/wfpc2/Wfpc2_hand2/ch6_exposuretime5.html -- 28.8 Кб -- 29.08.2000
Похожие документы

2. XXVIIth YERAC Contributions
Proceedings of the XXVIIth Young European Radio Astronomers Conference (YERAC). ... Please Note: e-mail addresses and external links in these contributions were correct when these papers were written in 1995, but may no longer be valid. ... In addition to the hypertext version of each paper, indicated by the link from the title of the paper, there are links to postscript versions of each paper, which are suitable for printing if you want a hardcopy of a given paper. ... Sandor Frey (or postscript ) . ...
[ Сохраненная копия ]  Ссылки http://www.mrao.cam.ac.uk/yerac/contributions.html -- 10.1 Кб -- 28.01.2000
Похожие документы

3. VLBI at Arecibo Observatory
... Proposing for VLBI Time at Arecibo . ... Documentation (Field System, VLBA4 terminal, Mark 5 system) . ... In 2001, the Arecibo Observatory received its hybrid VLBA-MARK IV (VLBA4) data acquisition system, and currently NAIC commits Arecibo to support VLBI observing up to a maximum of 4% of the 305-m's observing time. ... Tracking Time (h:mm) . ... The inclusion of the 305-m Arecibo radio telescope can dramatically boost the sensitivity of VLBI observations, even with its limited source tracking...
[ Сохраненная копия ]  Ссылки http://www.naic.edu/~astro/aovlbi/ -- 13.0 Кб -- 27.02.2014
Похожие документы
Еще в разделе: (Показать все результаты (>5553) - www.naic.edu/ )

4. Russian-Finnish Symposium, Program
... Professor Esko Valtaoja (Turku University, Director of Tuorla Observatory): "The problem of high-energy emission from AGN" . ... Associate Professor Harry Lehto (Tuorla): "Radio observations of GRS1915+105" . ... Dr. Alexander Riehokainen (Tuorla, Academy Researcher): "Multiwavelength observations of the Sun over a full activity cycle" . ... Ilona Torniainen (Metsahovi, PhD student): "Inverted-spectrum radio sources" . ... A Study of solar polar zone using eclipse data with RATAN-600 . ...
[ Сохраненная копия ]  Ссылки http://www.sao.ru/cats/~satr/RFSymp/papers.html -- 6.6 Кб -- 25.09.2006
Похожие документы

5. Contributions
... In these pages we have collected contributions by fellow amateurs supernovae hunters. These contributions concern mainly the discoveries they made and their searching activity. ... External link) . The discovery of SN1997bp in NGC 4680 (from TA Magazine, vol34, n.397) - text and images. Visual Supernova Searching With The 40 inch Telescope at Siding Spring Observatory . ... A web page on SN1995G in NGC 1643 (external link to the South Australia Astronomical Society) - text and images. ...
[ Сохраненная копия ]  Ссылки http://www.sai.msu.su/mirrors/isn/sndisco.htm -- 9.8 Кб -- 20.12.2007
Похожие документы

6. Archive of VLBI Observations Majordomo List
ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Staff list | ... Parkes radio telescope . ... Australia Telescope Online Archive (ATOA) . ... VLBI . ... CSIRO ATNF Data Archives . ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... This message : [ Message body ] [ More options ( top , bottom ) ] . ... I have not heard from anybody from the VLBI community wrt the Parkes instrumentation changes and I don't believe Hayley has either. ...
[ Сохраненная копия ]  Ссылки http://www.atnf.csiro.au/lists/vlbiobs/2012/02/1353.html -- 28.1 Кб -- 10.04.2016
Похожие документы

7. How to extract MOS background spectra from blank fields event lists
SAS home . ... EPIC background spectra are normally extracted from regions of the observation field-of-view, once "contamination" due to individual discrete celestial sources has been removed. ... In order to cope with this situation, blank sky event lists can be downloaded from the XMM-Newton Science Operations Center web site. ... It is in principle possible as well to extract background spectra from blank field event lists, if the spectrum accumulation regions are defined in sky coordinates. ...
[ Сохраненная копия ]  Ссылки http://xmm.vilspa.esa.es/sas/7.0.0/documentation/threads/MOS_blank_fields.html -- 6.3 Кб -- 22.08.2006
Похожие документы

8. http://zebu.uoregon.edu/2003/hum399/brahesum.html
... He made observations of a supernova (literally: nova= "new star") in 1572 (we now know that a supernova is an exploding star, not a new star). ... Brahe's meticulous observations showed that the supernova did not change positions with respect to the other stars (no parallax). ... This was early evidence against the immutable nature of the heavens, although Brahe did not interpret the absence of parallax for stars correctly, as we discuss below. Brahe made careful observations of a comet in 1577. ...
[ Сохраненная копия ]  Ссылки http://zebu.uoregon.edu/2003/hum399/brahesum.html -- 6.7 Кб -- 07.05.2003
Похожие документы
Еще в разделе: (Показать все результаты (>315) - zebu.uoregon.edu/ )

9. How We Contribute to New TSN
Next: Armagh Observatory New TSN Up: New TSN Action Plan Previous: What We Do Contents . ... The Armagh Observatory seeks to strengthen this interest by promoting wider access to scientific knowledge amongst all sections of the community, and disseminating the results of its scientific research through a high-profile programme of education and public outreach. ... The Armagh Observatory is fully committed to implement the New TSN Policy. ...
[ Сохраненная копия ]  Ссылки http://star.arm.ac.uk/annrep/annrep2004/node106.html -- 6.6 Кб -- 19.04.2005
Похожие документы

10. Starlight Polarization
Abstract -- Calculations are performed for the linear polarization of starlight due to extinction by aligned dust grains when the starlight traverses a medium with irregular magnetic fields. This medium is intended to represent the optically thick components of interstellar clouds which are observed to make little, if any, contribution to the polarization of starlight. ...
[ Сохраненная копия ]  Ссылки http://www.inasan.rssi.ru/~dwiebe/abstracts/absorp.html -- 2.0 Кб -- 27.09.2012
Похожие документы
Еще в разделе: (Показать все результаты (>28) - www.inasan.rssi.ru/ )

11. http://www.wdcb.ru/stp/data/solar.act/flux10.7/%20%20penticton.txt
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. ...
[ Сохраненная копия ]  Ссылки http://www.wdcb.ru/stp/data/solar.act/flux10.7/%20%20penticton.txt -- 6.0 Кб -- 18.01.2010
Похожие документы
Еще в разделе: (Показать все результаты (>138) - www.wdcb.ru/ )

12. An Approach for Obtaining Polarization Information from COBE-DMR
... Because the DMR instrument is differential and every pixel is multiply sampled, sky maps are produced by solving a coupled system of linear equations (the normal equations) to minimize a chi-squared. ... This is reflected in the algebraic form of the normal equations matrix, so that, if one were to diagonalize the matrix, one would find a single eigenvector whose eigenvalue was identically zero, and the associated eigenvector, viewed as a sky map, would have a constant value. ...
[ Сохраненная копия ]  Ссылки http://www.adass.org/adass/proceedings/adass94/keegstrap.html -- 12.9 Кб -- 03.11.2000
Похожие документы

13. Siding Spring Survey
T he Siding Spring Survey (SSS) is a Near-Earth Object search program that utilises the 0.5-m Uppsala Schmidt Telescope at Siding Spring Observatory, N.S.W., Australia. ... The mission of the Siding Spring Survey is to contribute to the inventory of near-earth objects (NEOs), or more specifically, the potentially hazardous asteroids (PHAs) and comets (PHOs) that may pose a threat of impact and thus harm to civilization. ... Based on the CSS Mission page . ... Siding Spring Survey Main Page . ...
[ Сохраненная копия ]  Ссылки http://www.mso.anu.edu.au/~rmn/ -- 11.4 Кб -- 23.12.2011
Похожие документы
Еще в разделе: (Показать все результаты (>608) - www.mso.anu.edu.au/ )

14. The AstroStat Slog Blog Archive Quintessential Contributions
Weaving together Astronomy+Statistics+Computer Science+Engineering+Intrumentation, far beyond the growing borders . ... Archives . ... People . ... To my personal thoughts, the history of astronomy is more interesting than the history of statistics. ... Quintessential Contributions: . ... The contents are only spanned about 100 years and there are great chances that my mind still favors the history of astronomy over the history of statistics. ... Comment ( RSS ) | ... Entries RSS . ... Chandra Blog . ...
[ Сохраненная копия ]  Ссылки http://hea-www.harvard.edu/AstroStat/slog/groundtruth.info/AstroStat/slog/2008/quintessential-contributions/index.html -- 21.5 Кб -- 01.03.2014
Похожие документы

15. research field
Main research interests: . 1) Structure and geometry of the circumnuclear medium of AGN, particularly through hard X-ray observations of obscured sources. ... 3) Physics of Ultraluminous Infrared Galaxies (ULIRGs): analysis of the AGN and starburst components through hard X-ray and infrared (with ground-based 3-5 micron spectroscopy, and with Spitzer in the 5-30 micron band) imaging and spectroscopy. ...
[ Сохраненная копия ]  Ссылки http://www.arcetri.astro.it/science/gal-agn/res_risaliti.html -- 2.1 Кб -- 14.08.2009
Похожие документы

16. http://www.ipa.nw.ru/conference/2002/sovet/PS/FIENGA.PS
... 8, ``Celestial Mechanics'', 2002 Two problems in solar systems dynamics, possible solutions and future A. Fienga IMCCE­Observatoire de Paris, Paris, France In this contribution, two major aspects of the new challenges of the solar system dynamics are presented. ... As it was demonstrated by (Standish and Fienga [4]), the perturbations of the Mars orbit by the asteroids are difficult to modelize and they present now the main limitation of the present theory of Mars motion. ...
[ Текст ]  Ссылки http://www.ipa.nw.ru/conference/2002/sovet/PS/FIENGA.PS -- 26.8 Кб -- 19.08.2002
Похожие документы

17. http://www.gao.spb.ru/english/as/j2014/presentations/heinkelmann_swg3.pdf
... Status of the numerical solutions and validation 2. ... Coupling of "solid" Earth components, e.g. core ­ mantle (Dehant et al.) ... Consistent relativistic formulation of Earth rotation (Gerlach, Klioner, Soffel) Status of the numerical solutions - 2 · The results from numerical solutions suffer from ­ Simplified solid Earth models ­ Incomplete Earth system models or neglecting of certain parts or neglecting of certain coupling mechanisms ­ Methodological limitations of computations...
[ Текст ]  Ссылки http://www.gao.spb.ru/english/as/j2014/presentations/heinkelmann_swg3.pdf -- 333.2 Кб -- 28.09.2014
Похожие документы

18. http://www.uafo.ru/publ/gao/2012GAOconf_289_292_Mozharovsky.pdf
sw@newmail.ru THE PROBE LAYER METHOD IN THE CALCULATIONS OF CONTRIBUTION AND RESPONSE FUNCTIONS S.G.Mozharovsky Ussuriysk Astrophysical Observatory of FEB RAS, Ussuriysk, Russia sw@newmail.ru The method of probe layer for the calculation of response and contribution functions is discussed. ... This allows us to turn from the response functions to the contribution functions calculated with help of the probe layer (CFPL). ... V- VMAX . ... Solar Phys., v.136, p.239-250. ... Solar Phys., v.35, p.11-29. ...
[ Текст ]  Ссылки http://www.uafo.ru/publ/gao/2012GAOconf_289_292_Mozharovsky.pdf -- 269.8 Кб -- 15.01.2013
Похожие документы
Еще в разделе: (Показать все результаты (>36) - www.uafo.ru/ )

19. ESO - cosmology2002
... Science . ... Science Users Information > Science and Technical Meetings > Conferences 2002 > cosmology2002 . ... Observing with ESO Telescopes . ... Public Surveys . ... Data Handling and Products . ... Science Data Products Forum . ... ESO Data . ... ESO Data Access Policy . ... Review: Weak Lensing . ... Tangential alignement of galaxies in a STIS Parallel shear survey field: a new dark lens candidate . ... Poster: . ... New Clues on clustering evolution from the K20 and FIRES surveys . ... data ...
[ Сохраненная копия ]  Ссылки http://www.eso.org/sci/meetings/2002/cosmology2002.html -- 34.8 Кб -- 10.04.2016
Похожие документы

20. Memorial international conference dedicated to 100-th anniversary of George
ASTROPHYSICS AND COSMOLOGY AFTER GAMOW - THEORY AND OBSERVATIONS . Gamov Memorial International Conference dedicated to 100-th anniversary of George Gamow . ... All contributions should be sent to Prof. S. Silich, e-mail: silich@inaoep.mx using the Macros ( pdf , ps , tex ), the session where your contribution was made. ... The length for the contributions will be:   . ... plenary talks – 12 pages . memorial talks – 6 pages . oral contributions – 4 pages . ... posters – 3 pages . ...
[ Сохраненная копия ]  Ссылки http://www.iki.rssi.ru/gmic100/proceedings.htm -- 7.5 Кб -- 23.08.2004
Похожие документы

1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | След.


Астронет | Научная сеть | ГАИШ МГУ | Поиск по МГУ | О проекте | Авторам

Комментарии, вопросы? Пишите: info@astronet.ru или сюда

Rambler's Top100 RFBR Яндекс цитирования