Peremennye Zvezdy", . ... GSC 4232-02515, NSVS 3147658, NSVS 3174760 . ... 14.2-14.9 (R, NSVS); . ... During observations of a secondary eclipse of GSC 04232-02830 (Goranskij et al., 2005) on August 8, 2007, we identified GSC 4232-02515 as a W UMa eclipsing binary. ... VAST software was used for aperture photometry. ... This method produces a light curve with an arbitrary zero point. ... Light Curve . Light curve of GSC 4232-02515 in NSVS magnitude scale. ... gsc423202515_kadar_nsvs.dat . ...

Еще в разделе: (Показать все результаты (>111194) - www.astronet.ru/ )

• XWare > APOD

OBSERVATIONS OF COORBITAL SATELLITES OF SATURN Emel'yanov N., Varfolomeev M. Sternberg State Astronomical Institute, Moscow, e-mail : emelia@sai.msu.ru Institut de MИcanique CИleste et de Calcul des иphИmИrides, Paris, e-mail : emelia@imcce.fr Abstract. To improve the orbital parameters and masses of coorbital satellites of Saturn, Janus and Epimetheus, new observations of these satellites are necessary. ... IN: Saturn. ... New observations of Saturn's coorbital satellites" - Icarus. ...

Еще в разделе: (Показать все результаты (>574) - lnfm1.sai.msu.ru/ )

• Natural Satellites Service. Apparent Encounters of the Tycho-2 Catalogue stars
• Natural Satellites Service. Saturn coorbital satellites ephemerides
• jo0031

... Advises . Contact Advises . As an advise for amateurs we would like to underline: if it's possible, try to observe 3 asteroid positions per night and do not neglect to observe the Numbered Minor Planets in your telescope field of view as a "by product" of your observational programs. ... We think such estimations ought to be produced every morning after CCD observations of the moving celestial objects by observer himself. ...

Еще в разделе: (Показать все результаты (>104) - www.accuracy.puldb.ru/ )

... Several knots of radio emission in the jets were identified and their motion could be followed between the images. ... The brightness evolution of the knots was found to be consistent with exponential decay of time constant 16 days. ... Knot Velocity and Distance Measurement . ... This paper presents preliminary results of recent 5 GHz observations of SS433 using MERLIN , including a measurement of its distance and an attempt to determine the behaviour of the knot brightness decay. ...

Еще в разделе: (Показать все результаты (>4427) - www.mrao.cam.ac.uk/ )

• Radio observations of the Marano Field
• Sub-mm and radio observations of water maser sources
• G120.1+1.4

... Exposure Time Calculator (ETC) . Survey processing . ... VISTA is a 4-m class wide field survey telescope for the southern hemisphere, equipped with a near infrared camera (1.65 degree diameter field of view at VISTA's nominal pixel size) containing 67 million pixels of mean size 0.34 arcsec and available broad band filters at Z,Y,J,H,K s and a narrow band filter at 1.18 micron. A wide field visible camera, if constructed, could also be used on VISTA. ... Tile . ... ESO VISTA Public Surveys . ...

Еще в разделе: (Показать все результаты (>28) - www.vista.ac.uk/ )

• Observing with VISTA
• VISTA ETC - Exposure Time Calculator

... Scientists pin down the distance to the Large Magellanic Cloud . ... A long series of observations of these objects has now led to the most accurate determination so far of the distance to the Large Magellanic Cloud т?? a crucial step in the determination of distances across the universe. ... After nearly a decade of careful observations, an international team of astronomers has measured the distance to our neighboring galaxy, the Large Magellanic Cloud (LMC), more accurately than ever before. ...

Еще в разделе: (Показать все результаты (>6618) - www.astronomy.com/ )

• Bright planets meet at dusk | Astronomy.com
• Accurate distance measurement resolves major astronomical mystery |
• Tycho's instruments | Astronomy.com

Pulkovo NEO Page . ... NEA Accuracy Estimation . ... The estimation of accuracy of the current CCD observations of asteroids and comets is constantly performed at Pulkovo Observatory. ... The (O-C) values, so called "Observed" minus "Calculated" positions, characterize numerically the observations of any observatory, both professional and amateur, during a short period (one or several close nights). ... So the (O-C) values for these objects nearly entirely define the errors of observations. ...

Еще в разделе: (Показать все результаты (>348) - www.gao.spb.ru/ )

• Pulkovo NEO Page: Ephemeris Support
• Catalogue of double stars
• Pulkovo NEO Page: Estimation of Observational Accuracy

This page is devoted to information on Supernova 1999br in NGC 4900 . Basic information on this SN, including the last reported brightness, on this Supernova can be found on the main supernova page. ... Note that there is a very bright foreground star (mag about 11.3) located near the position of Supernova 1999br . ... Mag . ... vsnet-chat 1771 ] Host galaxy of SN1999br . ... from [ vsnet-alert 2870 ] SN 1999br in NGC 4900 . ... The host galaxy NGC 4900 has a rather peculiar appearance. ...

Еще в разделе: (Показать все результаты (>964) - www.rochesterastronomy.org/ )

• THE BRIGHT SUPERNOVA 1991T IN NGC 4527; AN AMATEURS PRESPECTIVE
• SN1989B in M66
• Posting to VSNet

... The Galactic low-mass X-ray binary GS 2023+338 was discovered during the burst on May 22, 1989 with the Japanise satellite Ginga (aka Galaxy). The flux reached 17 crabs (this unit of flux measurement is an bright X-ray source, Crab Nebula) at 10-35 keV. ... No other radio telescope worldwide carried out multi-frequency measurements. ... Upon 14 days the radio flux fell below the detection level at the RATAN-600 in relation to the decrease of the X-ray flux. ...

Еще в разделе: (Показать все результаты (>339) - mavr.sao.ru/ )

• GRB090726
• Measurement of the dark halo shape in polar ring galaxies
• Galaxy sector, archive 2014

Next: NICMOS/HST H-band (F160W) Images Up: NICMOS Science Previous: HST NICMOS Observations of . ... Observations of P . ... The NICMOS team has devised a comprehensive program of observations of the Galactic Center. ... Data in hand give a first look at variability and a detailed look at the search for the tip of the main sequence will be discussed where NICMOS has demonstrated adequate sensitivity and photometric precision to identify likely O8-B1 stars at the Galactic Center. ...

Еще в разделе: (Показать все результаты (>272) - www.stecf.org/ )

• Unusual Emission near a Compact Source in Orion
• NICMOS/HST H-band (F160W) Images of the 30 Dor Starburst Cluster
• Space Telescope-European Coordinating Facility

Check out the new images (Jan 18-25) and (Jan 26-Feb 05) of the comet by Rob McNaught. ... Every few years a comet becomes bright enough to be easily seen with the naked eye but only every decade or so are these comparable with comets like Halley. ... Before Jan 13, the comet is not visible in the Australian sky after sunset. ... SOHO images . ... On Jan 12 at approximately 09:00 UT (8pm NSW time), comet C/2006 P1 McNaught appears at the 11 o'clock position in the images. ... STEREO images . ...

Еще в разделе: (Показать все результаты (>746) - www.mso.anu.edu.au/ )

• Siding Spring Survey Follow-up Obs
• The SMS Survey
• Research Interests

In this gallery are many images of Low Surface Brightness Galaxies which have recently been discovered and analyzed. ... The central surface brightness of this galaxy is 24.28 . Malin 2 This galaxy is another huge disk galaxy with a scale length of 15 kpc and a redshift of 15000 km/a. The high surface brightness knot in one of its spiral arms actually has the same color, luminosity and H-alpha equivalent width as the entire Large Magellanic Cloud . ... Truly it is a Low Surface Brightness Galaxy. ...

Еще в разделе: (Показать все результаты (>422) - zebu.uoregon.edu/ )

• Astro-2 and the UIT Experiment
• The Galaxy Gallery: Messier Objects
• Orbital Properties of the Solar System

... The following charts/text are intended as tools for monitoring the Type Ia supernovae ( SNe ) event visually or photographically (utilizing telescope equipped CCD equipment).The files include: A replication of The Type Ia SNe , V- magnitude (with data point checks from other cited references)and color index (B-V) templete (to indicate a general color-related trend of the type Ia ... I believe this might help alleviate some of the problems involving the making of acceptable amateur light curves...

Еще в разделе: (Показать все результаты (>5134) - www.sai.msu.su/ )

• Supernova Magnitude.
• Contributions by amateurs: SN1996X.
• SN 1989B Light Curve Analysis.

... October 8, 15:00 15:40 . ... PDF [7.2б MB] October 8, 15:40 16:10 . ... The sky brightness, atmospheric extinction, cloud coverage and auroral appearance are obtained from these images. ... Aurorae are identified by comparing the observed sky brightness to the sky brightness expected from this model. ... The identification of few potential sites for future's larger facility require several instruments, measuring various site characterizing parameters. ...

Еще в разделе: (Показать все результаты (>33) - site2010.sai.msu.ru/ )

• Methods and instruments to measure/monitor major site properties
• Results of recent and ongoing site programs

ATMoB Awards Program - Messier Marathon Worksheet Observer: Date: Instrument(s) Used: Location: Messier Observing Catalog/Worksheet Observing Order 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 Messier Number M 77 M 74 M 33 M 31 M 32 M110 M 52 M103 M 76 M 34 M 45 M 79 M 42 M 43 M 78 M1 M 35 M 37 M 36 M 38 M 41 M 93 M 47 M 46 M 50 ...

Еще в разделе: (Показать все результаты (>400) - www.atmob.org/ )

• Amateur Telescope Makers of Boston ATMoB Observing Awards Program

... Classes . ... Nebula Class Reference . ... getInfoString (const StelCore *core, const InfoStringGroup &flags) const . ... getCloseViewFov (const StelCore *core=NULL) const . ... getVMagnitude (const StelCore *core, bool withExtinction=false) const . ... getSelectPriority (const StelCore *core) const . ... getEquinoxEquatorialPos (const StelCore *core) const . ... getJ2000GalacticPos (const StelCore *core) const . ... getPositionInfoString (const StelCore *core, const InfoStringGroup &flags) const . ...

Еще в разделе: (Показать все результаты (>952) - astro.uni-altai.ru/ )

• Stellarium: Quasar Class Reference
• Stellarium: Supernova Class Reference
• Stellarium: BigStarCatalogExtension::StarWrapper< Star > Class Template

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! ...

Еще в разделе: (Показать все результаты (>52) - www.aal.lu/ )

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. ...

Еще в разделе: (Показать все результаты (>38976) - vo.astronet.ru/ )

• astro-ph

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. ...

Еще в разделе: (Показать все результаты (>560) - www.puldb.ru/ )

• http://www.puldb.ru/laza_gao/PUB/av_1.pdf
• Pulkovo Database of Observations of Visual Double Stars
• Pulkovo Databases

RADIOASTROPHYSICAL DEPARTMENT • INSTITUTE OF SOLAR-TERRESTRIAL PHYSICS RAS SB . ... SSRT - Receiving systems . The SSRT has two independent receiving systems for recording solar observational data, and several ancillary receivers for checking, setting up and adjusting the instrument. The base receiving systen is a multichannel filter receiver for a simultaneous recording in 180 channels with the 500 kHz band each, adjusted at steps of about 600 kHz. ... Channel's band . ...

Еще в разделе: (Показать все результаты (>41) - ssrt.iszf.irk.ru/ )