... Dodson, Legge et al, ApJ, 2003 Spectral Line Sources · Requirement of high brightness temperatures means no thermal emission · Masers: Galactic Extragalactic · OH, H2O · OH, H2O, SiO, CH3OH · Galactic extra-galactic HI absorption VLBI arrays · VLBA (Very Long Baseline Array) Dedicated US array of ten 25m telescopes 330 MHz ­ 90 GHz · EVN (European VLBI Network) Formal collaboration of radio telescopes in Europe, Asia and South Africa ~15 telescopes 15m to 100m 330 MHz ­ 22/43 GHz ...

... We have made observations of the Perseus cluster with the Westerbork Telescope at 610 MHz. ... Several newly detected sources are identified with cluster galaxies. ... No evidence is found for the existence of the previously reported ~ 65'x25' cluster halo, 3C 84B. Key words: radio galaxies - clusters - tailed radio sources buoyancy The Perseus Cluster of galaxies is one of the most fascinating systems accessible to extragalactic astronomers. ...

On April 27 the large sunspot in Active Region 8970 was observed using the Adaptive Optics system at the Swedish Vacuum Solar Telescope at La Palma. ... It showed to give a significant improvement of the image quality under less favorable conditions. Click on the image to get a high resolution version. ... The data cube is cut in three pieces to get manageable file sizes, you can glue them together to restore the whole 108 images cube. gband_ao.01_36.cube.fits 36.5 Mb: image 1 - 36 . ...

... December 21, 1997 . ... Advantages are briefly discussed of gaining in spectral resolution, which is accompanied by losses in signal level, as compared with the attempts to improve the accuracy of measurement of line parameters by means of rising the S/N ratio alone with increasing the exposure time. To partially solve the problem of observations of faint objects at the BTA a new design echelle spectrometer is proposed. high resolution spectroscopy . ...

To appear in "Fourth Workshop on Robotic Autonomous Observatories (2015)"RevMexAA(SC) METEOR OBSERVATIONS WITH MINI-MEGATORTORA WIDE-FIELD MONITORING SYSTEM S. Karpov, 1, 3 N. Orekhova2 G. Beskin, 1, 3 A. Biryukov3,4 S. Bondar,2 E. Ivanov,2 E. Katkova,2 A. Perkov, and V. Sasyuk3 RESUMEN 2 Favor de prop orcionar un resumen en espanol. ... The faintest detected meteors has the peak brightness about 10 mag, while the ma jority - from 4 to 8 mag. ... 2010; Karpov et al. 2013; Beskin et al. ...

The night sky brightness, together with number of clear nights, seeing, transparency, photometric stability and humidity, are some of the most important parameters that qualify a site for front-line ground--based astronomy. ... Night sky at ESO-Paranal (Chile). ... Night sky brightness data . ... UBVRI night sky brightness at ESO-Paranal during sunspot maximum (A 2003, PDF) . ... The Dancing Sky: six years of night sky observations at Cerro Paranal (Starlight 2007 conference proceedings, PDF) . ...

... P2278 Date Received: 2006-Sep-28 20:01:45 Technical Page Proposal Type: General Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Regular Pulsars 30 Hours 2 hours Broadband observations of pulsar dynamic spectra We propose high time resolution, broadband observations of four bright pulsars. ... Sp ecial Equipment or setup: none RFI Considerations 1 Frequency Ranges Planned 2000-2400 3400-3900 4000-5200 2 ...

... High spectral, spatial and temporal resolution UV observations of the quiet Sun transition region show a highly structured and dynamical environment where transient supersonic flows are commonly observed. ... Estimates of the kinetic and enthalpy fluxes associated with these events show that explosive events are not important so far as solar coronal heating is concerned. ... In some cases, non-Gaussian line profiles are associated with supersonic flows in small magnetic loops. ...

Astronomy Picture of the Day . Bright Points on the Quiet Sun . ... Explanation: Up close, the solar surface is a striking patch work of granules in this very high resolution picture of the quiet Sun . ... Constantly present on the solar surface, the bright points do not seem to be related to sunspots that come and go with the magnetic solar cycle . ... Publications with keywords: Sun - magnetic field - granules . Publications with words: Sun - magnetic field - granules . ... A Solar Ballet . ...

... Flux density at 1 GHz (/Jy): 160 . ... Radio: Limb-brightened to NE, with faint extension to the E. Optical: Brightest to the NE, with faint filaments outside the NE boundary. ... Fesen 1984, ApJ, 281, 658. ... ADS . ... 151 MHz observations (1'.2?3'.1) and Half-Mile Telescope at 1.4 GHz (2'.1?5'.4). ... Radio, IR, optical, UV and X-ray comparison, including VLA at 1.6 GHz (3".8?3".3 and 40''). ... 1988, ApJ, 335, 215. ... IR observations of shocked O 2 . ... Observations of shocked molecular...

Smithsonian Astrophysical Observatory Memorandum To : From Date: Re: M. Cappi, Strong Gravity SDT/YB Team, XMS team : M. Garcia April 14, 2010 XMS high/mid/low resolution event rates for bright AGN mrg-2010-02v2 This memo arises out of the concern that the bright AGN that will be used to observed strong gravity effects ­ in particular those for which time-resolved measurements of test particle orbits will be made ­ may generate counting rates in the XMS that are sufficient to overwhelm it. ...

Supernova Gallery The purpose of the Bright Supernovae web pages is to provide a place where people can find reference images of Supernovae. ... This is an RGB color image of Supernova 2003gs in NGC 936 Credit: Pablo Canadia . Used by permission. (click on image for full resolution) . ... This is an LRGB color image of Supernova 2003cg in NGC 3169 Credit: Pollux observatory . ... Credit: Nick Suntzeff Used by permission. (click on image for full resolution) . ... Credit: AURA/NOAO Image Library . ...

... Дни открытых дверей к юбилею САО РАН (12-14 апреля 2016 г.) . Международная конференция "Dark Ages and White Nights (Spectroscopy of the CMB)" (20-24 июня 2016 г.) . ... Международная конференция MULTI-SPIN GALAXIES - 2016 (26-30 сентября 2016 г.) . Международная астрономическая конференция "Физика звезд: от коллапса до коллапса" (3-7 октября 2016 г.) Архив . ... Подробнее.. ... 10.02.16 . ... БТА в реальном времени . ... Цейсс-1000 в реальном времени . ... Последнее обновление: 22/03/2016 ...

ALMA/Hubble composite image of the gravitationally lensed galaxy SDP.81. The bright orange central region of the ring (ALMA's highest resolution observation ever) reveals the glowing dust in this distant galaxy. ... The diffuse blue element at the center of the ring is from the intervening lensing galaxy, as seen with the Hubble Space Telescope. ALMA (NRAO/ESO/NAOJ); B. Saxton NRAO/AUI/NSF; NASA/ESA Hubble, T. Hunter (NRAO) ...

... 2010 April 16 . Bright Points on the Quiet Sun . ... Explanation: Up close, the solar surface is a striking patch work of granules in this very high resolution picture of the quiet Sun . ... Constantly present on the solar surface, the bright points do not seem to be related to sunspots that come and go with the magnetic solar cycle . ... About APOD | ... NASA Official: Phillip Newman Specific rights apply . NASA Web Privacy Policy and Important Notices . A service of: ASD at NASA / GSFC . ...

Subject, Object and Problems of Astrophysics. Practical and Theoretical Astrophysics. ... Visual Telescope; Problems Which Are Solved with the Its Help. ... Resolution of Telescopes. ... Effectiveness of Telescope in Respect of Resolution. ... Optical Power of Telescopes for Star-like and Extensive Objects. Boundary Magnitude. Reasons of Light Dissipation in Telescopes. ... Spectral Instruments in Astrophysics. ... Basic Photometrical Ideas, Magnitudes and Their Measurement. ...

New reduction of minor planets photographic plates obtained with Pulkovo Normal Astrograph A.A. Berezhnoy Pulkovo Observatory of RAS, Saint-Petersburg, Russia Minor Planet observations at Pulkovo Periodical observations of 14 bright asteroids named Selected Minor Planets (SMP) were performed at Pulkovo since 1948 within the international framework started by works of B.V. Numerov and D. Brouwer. ... 108 133 113 74 124 67 97 88 14 84 64 5 20 19 Epochs (YYYY.MM) 1200 Mean values of total obs. ...

... Fast line profile in the spectra hot O stars , Astrony Letters, 29 , 175-187 (2003) . ... Preliminary results of spectral observations of stars lambda Ori, alpha Cam and 19 Cep with the 1 m telescope of Special Astrophysical Observatory are presented. A variability of line profiles in the spectra of all studied stars is detected. ... The cyclical profile variations of HeII lambda 4686 and CIII lambda 5696 lines in the spectra of lambda Ori A with the recurrence time of 1.3-1.6 days are detected. ...

... R-band images obtained at 0.8 arcsec seeing conditions have allowed us to separate foreground star from point-like extragalactic source and estimate their brightness separately. ... To study the nature and properties of the source, we observed it under high spatial resolution. ... CONCLUSION RTT150 optical observations with sub-arcsecond seeing and low resolution spectra confirm the hypothesis of superposition of a radio source onto a `normal' F/G galactic star proposed by [1]. ...

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 ...