... Copyrightї1997 Bob Yen (byen@ix.netcom.com) (http://www.comet-track.com/hb/hb.html) . ... Information on Comet Hale-Bopp for the Non-Astronomer Hale-Bopp rotates about twice a day (3/14/97) . ... The Comet Observation Home Page was been selected to receive the Griffith Observatory Star Award for the week of February 2 - 8, 1997 for excellence in promoting astronomy to the public through the World Wide Web. ... Typically, about 1,000 individual users/computers access this page every day. ...

The Hubble orbiting telescope. The Earth's atmosphere, while transparent to visible light, absorbs most "electromagnetic radiations" which belong to the same family as light: parts of the infra-red (IR) and all of the ultra-violet (UV), X-rays and gamma rays. ... The Hubble telescope , in low Earth orbit, overcomes such limitations, in the visible range and in part of the UV. ... Some satellites specialize in observing the Sun, such as the Japanese Yohkoh and NASA's SOHO . ...

... 8, ``Celestial Mechanics'', 2002 Using positional observations of minor planets for improving the orientation of star catalogue Yu. ... But expe­ rience shows that this kind of observations can be used succesfully for improving orientation parameters of star catalogues with respect to dynamical reference system. ... Observations of 90 selected minor planets were used in general solution for their orbital elements, orientation parameters and some parameters of phase re­ duction. ...

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 ...

MAIN PAGE . ... Nova Cygni August 1975! ... 1975/76: Comet West! ... Dr. Richard West (4th from left) & AAL members visiting SES Betzdorf on occasion of our club's 25th anniversary - October 1996 . Comet West Information . ... It was the brightest comet visible from Earth since Comet West in 1976. ... 1997: Comet Hale-Bopp! ... Thus Comet Hale-Bopp never got closer to Earth than Earth gets to the Sun. ... Comet Hale-Bopp JPL Page . ... 1999: Total solar eclipse over Luxembourg! ...

Astronotes Armagh Planetarium's Stellar Blog! ... January . ... Posted on January 29, 2013 | 1 Comment On the weekend of the 14and 15 of July 2012 we held a pinhole photography event.€а This was led by the world renowned pinhole photographer Justin Quinnell.€а Justin has been [ ] . Continue Reading.. ... This new comet was in January 2013 just a dim speck in the constellation Gemini, between the stars Castor and Pollux. ... Posted on November 15, 2012 | ... Posted on October 3, 2012 | ...

. Please use the following for publications and media citations: . "Based on observations obtained with Apache Point Observatory's 0.5-m Astrophysical Research Consortium Small Aperture Telescope." . List of publications based on 0.5-m observations (TBD) . for questions or comments contact archive server .

... It is found that the correlation coefficients between these two parameters calculated separately inside and outside the sunspot formation zone ±30 have cyclic variation and occur in anti-phase. This suggests different mechanisms of formation of the corona in the fields of small, medium, and large scales. ... The relationship between the coronal green line brightness (CGLB) and the magnetic field strength (MFS) has been investigated by constructing the corresponding synoptic maps for the 1977-2001. ...

... Moore Observatory is a research and advanced teaching facility of the University of Louisville. ... The 24-inch Ritchie Chretien (RC24) telescope is a research instrument used by faculty and graduate students involved in studies of exoplanets, optical properties of the atmosphere, and the development of imaging and spectroscopic technology. ... Kent (CDK20S) are collaboratively operated by the University of Louisville and the University of Southern Queensland for both research and education. ...

SPECTRA OF SPLIT COMET C/1999 S4 (LINEAR) K. I. CHURYUMOV1 , I. V. LUK'YANYK1 , V. V. VLASSYUK2 and N. V. BORISOV 1 Astronomical Observatory, Kyiv National Shevchenko University, Kyiv, Ukraine; 2 Special 2 Astrophysical Observatory of RAS, Russia (Received 5 March 2002; Accepted 12 July 2002) Abstract. ... On July 22/23, before the splitting of the cometary nucleus, several emission lines, such as C2 , C3 , CN, NH, CH, NH2 , CO+ , H2 O+ were clearly identified in the spectra. ... 2, 2000. ...

Twilight observations with MASS/DIMM B. Safonov Sternberg Astronomical Institute Moscow State University Comprehensive Characterization of Astronomical Sites, 2010 B. Safonov (Moscow State University) Twilight observations with MASS/DIMM SITE 2010 1 / 17 Why observe in twilight with MASS/DIMM? ... ASM includes 3 devices sensitive to background: guider, DIMM and MASS. B. Safonov (Moscow State University) Twilight observations with MASS/DIMM SITE 2010 2 / 17 Background in guider. ...

Title: A New Model of the Gravitational Lens 0957+561 and a Limit on the Hubble Constant . Authors: Norman A. Grogin , Ramesh Narayan (Harvard Univ.) ... Title: ROSAT/PSPC observation of the distant cluster CL0939+472 . ... Title: Interaction in the Bimodal Galaxy Cluster A3528 . ... Title: Cosmological Implications of Galaxy Cluster Evolution . ... Title: Galaxy Cluster Virial Masses and Omega . ... Matches 201 to 222 from a total of 222 matches for the search pattern galaxy cluster . ...

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. ...

... MASTER Net is 56 square degrees per 1 exposition . ... 06 Dec 2015: GRB 151205B: MASTER-NET early optical observations GCN18665 . ... 18 Nov 2015: GRB 151118A: MASTER-NET optical observations GCN18613 . ... 12 Nov 2015: GRB 151112A: MASTER-NET optical limit GCN18591 . ... 07 Nov 2015: GRB 151107A: MASTER-NET optical observations GCN18565 . ... 31 Oct 2015: Five OTs detected by Global Robotic MASTER Net ATel8232 . ... 02 Oct 2015: GRB 151001B: MASTER-NET early optical observations GCN18380 . ...

... Our scientific interest is an accuracy of asteroid CCD observations obtained by amateurs and professional astronomers all over in the World. ... These data help us to analyse an accuracy of real CCD positions in the MPC Database. ... Do you test your observations of the small Solar System bodies permanently before sending them to the International Minor Planets' Center? ... Do you know a real accuracy of your positional CCD-observations in comparison with the other observatories' one ? ...

Shakht N.A., A.A.Afanas'eva, D.L. Gorshanov, E. V.Poliakow (Pulkovo Observatory, Russia): Title: Long-term photographic observations for selected objects of Pulkovo program: measurements and results. Abstract: The selected objects, observed at Pulkovo observatory during long time period have been of intense interest among astronomers, and now they are the most important aims for space investigations. ... Now we believe, that they also are interesting for observation during space mission Gaia. ...

Statistics of sunspot activity . The sunspot indices . ... Visual indices of solar activity . ... n - number of spot groups . A - Waldmeier class of unipolar spot groups without penumbra . B - class of bipolar spot groups without penumbra . C - class of bipolar spot groups with one penumbra pole . D - class of small bipolar spot groups with two penumbra poles . E - class of middle bipolar spot groups with two penumbra poles . ... H - class of unipolar penumbrated spot groups . ...

... Field of interest: data analysis and interpretation of X-ray observations of BHC and NS systems, astrophysics of compact objects and related phenomena: X-ray , optical and radio observations , shocks and stellar winds, emission mechanism, the spectral and timing analysis of the X-ray emission from microquasars ( signature of accreting BH), atoll- and Z-sources ( signature of accreting NS), modeling of INTEGRAL images % . ...

... Solar Corona - Basic Level of Heliosphere. ... Solar Wind, Its Characteristics by Observation on the Terrestrial Orbit. ... Shock Waves in Heliosphere - General Physical Aspect and Features of Propagation of Solar Wind in Medium. ... Solar Cosmic Rays - Morphology, Origin, Energy Spectrum, Manifestrations in Outskirts of the Earth. ... Comets as Natural Heliosphere Probes. ... Dinamics of Heliosphere Dust - Light Pressure, Sublimation, Crashing, Sweeping by Solar Wind, Falling on Planetary Bodies. ...

... 332, P L25-L28 (1998). Abstract . ... 332, P 395-409 (1998). ... 332, P 410-428 (1998). ... 332, P 429-448 (1998). ... 332, P 449-458 (1998). ... 332, P 459-478 (1998). ... 332, P 479-492 (1998). ... 332, P 493-502 (1998). ... 332, P 503-513 (1998). ... 332, P 514-522 (1998). ... 332, P 523-525 (1998). ... 332, P 526-540 (1998). ... 332, P 541-560 (1998). ... 332, P 561-568 (1998). ... 332, P 569-574 (1998). ... 332, P 575-585 (1998). ... 332, P 586-604 (1998). ... helpdesk@link.springer.de ...