CLEAN Map gif -- is a plot of the naturally weighted CLEAN image. The red dashed contours indicate negative flux. The beam is shown in the bottom left corner of the images. The plot is in GIF format.

Еще в разделе: (Показать все результаты (>12) - astra.prao.psn.ru/ )

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 (>288) - zebu.uoregon.edu/ )

... Animation of the neutral hydrogen data cube from Westerbork. ... VIRGOHI 21 was a dark galaxy candidate discovered in 2005 it was found to contain no starlight down to a very low surface-brightness level, yet its velocity structure implied that it had a mass of 10 10 10 11 solar masses. ... VIRGOHI 21 was first observed in the 21-cm line of neutral hydrogen with the Lovell telescope at Jodrell Bank Observatory and the detection was confirmed using the Arecibo telescope ( Davies et al. ...

Еще в разделе: (Показать все результаты (>3316) - www.naic.edu/ )

... To be read in conjunction with Section 4.11 of the WFPC2 Instrument Handbook , -Version 4.0. ... 1 The second study found evidence that CTE loss for faint stars has increased with time (Whitmore, 1998). The primary observational consequence of CTE loss is that a point source at the top of the chip appears to be fainter than if observed at the bottom of the chip, due to the loss of electrons as the star is read out down the chip (see Figure 1 ). ... Last updated: 06/16/98 10:38:00 . ...

Еще в разделе: (Показать все результаты (>14524) - www.stsci.edu/ )

• Observing Bright Targets
• Observing Faint Targets Near Bright Objects
• Superluminal Motion in the M87 Jet

... These data were originally part of a PhD-thesis at Leiden Observatory by M.H. Wieringa (1991). 1 name Name of source (char8, example : '76W0771*') 2 freq MHz Frequency of source detection in MHz (int, example : 327 or 608 ) 3 ra_1950 radians B1950 Right Ascension (in radians) ( real , example : 2.328327) 4 ra_1950_deg degrees B1950 Right Ascension (in degrees) ( real , example : 133.403290) 5 ra_err seconds Error in RA ( ... 70W : Umi, 327 MHz only, one field. ... Columns 21 Rows 5850...

Еще в разделе: (Показать все результаты (>2722) - www.sao.ru/ )

• The ROSAT All-Sky Survey Bright Source Catalogue
• Using the sky model
• A deep 38-MHz radio survey

... DMSP Satellites , RAS Explanation: Where have all the dim stars gone? From many places on the Earth including major cities, the night sky has been reduced from a fascinating display of hundreds of stars to a diffuse glow through which only a handful of stars are visible. The above map indicates the relative amount of light pollution that occurs across the Earth . ... Publications with keywords: Earth - light pollution . Publications with words: Earth - light pollution . ...

Еще в разделе: (Показать все результаты (>117546) - www.astronet.ru/ )

• Астронет > Artificial Night Sky Brightness
• Астронет > Fomalhaut Dust Disk Indicates Planets
• Bright Cliffs Across Saturns Moon Dione

... References: %Observed energy levels: Edlen, 1984, Phys.Scripta, 30, 135 %Theoretical energy levels (1-15): Zhang, Sampson, ADNDT, 1999, 72, 153 % produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % G. Del Zanna, May 2001. contains wavelengths, gf and A values for each transition. Wavelengths are based on experimental level energies where available; wavelengths calculated from theoretical energies are less accurate and are given as negative values. ...

Еще в разделе: (Показать все результаты (>9139) - www.arcetri.astro.it/ )

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... The formation process of a MBF and the associated BP (No. 1 in Table 1), which is formed by bipolar emergence. The top row gives the BP region as seen in AIA 193 at the indicated time. ... The bottom row shows the normalised AIA 193 lightcurve (left), and the positive (middle) and negative (right) magnetic fluxes obtained in the blue and yellow boxes marked in the top two rows. ...

Еще в разделе: (Показать все результаты (>2231) - star.arm.ac.uk/ )

• ISS passes over Ireland | International Year of Astronomy in Ireland |

... 2002 October 11 . Fomalhaut Dust Disk Indicates Planets . Drawing Credit: David A. Hardy , ROE , ATC , NSF , NASA . Explanation: One of the brightest stars on the sky likely has planets. ... Recent observations in far infrared light with a detector cooled to near zero kelvins indicate a dust disk surrounding Fomalhaut that has both a hole in the center and a warped edge. ... About APOD | ... NASA Technical Rep.: ... A service of: LHEA at NASA / GSFC . ...

Еще в разделе: (Показать все результаты (>8192) - www.sai.msu.su/ )

• SAI SN RESEARCH GROUP
• APOD: 2006 September 5 - Bright Cliffs Across Saturns Moon Dione
• APOD: 2001 September 10 - Galactic Center Flicker Indicates Black Hole

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) . ...

Еще в разделе: (Показать все результаты (>44951) - www.eso.org/ )

• Brightness "Dip" and Velocity Variations of OGLE-TR-122 | ESO

... 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 (>236) - mavr.sao.ru/ )

• Solar system sector, archive 1998

... This paper describes the main algorithms used by the Einstein Level One processing to create the exposure masks and the background maps for Einstein IPC images, and how these algorithms were recreated in the IRAF environment. Our goal was to recreate the algorithms used by the Level One Processing to create exposure masks and background maps for Einstein Image Proportional Counter (IPC) data (cf. sections 2.5 and 2.7 of Harnden et al. ...

Еще в разделе: (Показать все результаты (>1588) - www.adass.org/ )

• ADASS 2002 Conference Proceedings

. Please standby and you will be automatically connected to the new location of the unframed Supernova page. Or, click on the link above. If you have questions or problems, please email me at David Bishop dbishop@vhdl.org . Last modified: Mon Aug 27 12:40:15 EDT 2001

Еще в разделе: (Показать все результаты (>948) - www.rochesterastronomy.org/ )

• Bright Supernova - Archives
• Supernova 2002fk in NGC 1309
• Supernova 2009js in NGC 918

Microsymposium 38, MS083, 2003 (A4 format) MERCURY: LOCAL VARIATIONS OF THE PHOTOMETRIC RELIEF. ... Because of trajectory and pointing angle constraints the planet could be observed from Mariner 10 only over a small range of phase angles between about 75o and 110o. Therefore the photometric investigations are restricted to measuring the distribution of brightness on the Mercurian disk. ... Raw versions of real-time processing pictures FDS 0000984 and FDS 0000986 were used (images 196 and 202). ...

Еще в разделе: (Показать все результаты (>109) - selena.sai.msu.ru/ )

This figure shows, on the left, images of Encke on three successive days from November 6 to November 8; on the right, images of ISON are shown for three successive days from November 9 to November 11. ... Green circles indicate some of the brighter cataloged background stars in each image; yellow marks bracket the comets. The background stars are fixed in each image from top to bottom, so the motion of the comet relative to the stars is clear in each case. ...

Еще в разделе: (Показать все результаты (>3358) - www.astronomy.com/ )

• http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7B6801350C-3419-40D1-A6FE-9B0611582FFB%7D
• Bright planets meet at dusk | Astronomy.com

... Flux density at 1 GHz (/Jy): 19 . ... Notes: This is the remnant of Kepler's SN of AD 1604. Radio: Incomplete shell, brighter to the N. Optical: Faint filaments. X-ray: Shell, brighter to the N. Distance: Optical expansion and proper motion indicates about 2.9 kpc, H I observations suggest 3.4 to 6.4 kpc. ... Optical proper motions. ... VLA at 1.4 (2".5?3".2) and 5 GHz (3".2?4".8) and Einstein image (5"). ... VLA at 1.4 (1".2?2".3) and 5 GHz (0".6?1".0) at two epochs. ... 1991, ApJ, 366, 484. ...

Еще в разделе: (Показать все результаты (>2609) - www.mrao.cam.ac.uk/ )

• G332.4-0.4
• Astrophysics Group VLSS

... Its perihelion would occur on April 1, 1997, at which point the comet would be only 0.92 astronomical units from the Sun, just within the orbit of Earth. ... Taken in April 1993, the photo showed the comet over 13 astronomical units from the Sun, well beyond the orbit of Saturn. ... Hale, as in Comet Hale-Bopp, has written a book, Everybody's Comet (available through the ASP Catalog) and coordinated an Internet project, "Hale-Bopp: Live in the American Classroom." ... Anatomy of a comet. ...

Еще в разделе: (Показать все результаты (>956) - www.astrosociety.org/ )

• ASP: By the Light of the Moon
• ASP: Light Pollution
• ASP: Star Science in the Autumn Sky

... This will only be implemented at a later time, if in-orbit experience warrants it. rgsoffsetcalc accepts a list of DIAGNOSTIC datasets (refer to the ODF ICD [ 1 ]. For each DIAGNOSTIC dataset rgsoffsetcalc calculates the mean and standard deviation of the pulse height distribution. ... Optionally, rgsoffsetcalc can store the pulse height distributions for each input dataset and node in a dataset (see the description of withhistogramset and histogramset ). ...

Еще в разделе: (Показать все результаты (>5680) - xmm.vilspa.esa.es/ )

• The contour method of calculating source region shape

... Neutral hydrogen is the best tracer of accreting and outflowing gas, however very hard to detect due to its low column density. ... Simulations predict that in order to detect HI in the extended environment of galaxies, brightness sensitivities well below NHI ~1018 cm-2 are required (e.g. Popping et al. ... Direct aims of the projects include: - Achieve a 1 sigma NHI of 2.5x1017 cm-2 over 20 km/s. - Measure the extended gas content of galaxies to detect gas accretion and outflows. ...

Еще в разделе: (Показать все результаты (>12208) - www.atnf.csiro.au/ )

• NGC 6221
• The HIPASS Bright Galaxy Survey
• The Brightest Galaxies from HIPASS

... Classical nova V2362 Cyg (N Cyg 2006, 21:11:32.34, +44:48:03.9, 2000 [position in ATel 928 is incorrect!] ) undergoes gradual increase of its brightness since middle of August, 2006 from the level of V = 11.9. ... Full width of Halpha line is 5900 km/s, and that one of Hbeta is 5300 km/s. We identified the strongest emission features as CIII+NIII blend centered on 4652A, [OIII]+NII blend on 5010A, NII+[NII] blend on 5708A, NaI+OI blend on 5920A. Absence of HeI lines at 6678 and 7065A is surprising. ...

Еще в разделе: (Показать все результаты (>876) - jet.sao.ru/ )

• The ROSAT Bright Survey: II. Catalogue of all high-galactic latitude RASS
• di_eks
• Cosmological Gene project