... (degrees) b2 galactic latitude (degrees) sgl supergalactic longitude (degrees) sgb supergalactic latitude (degrees) pgc PGC name *** alphabetical ** ident1 1st name (NGC,IC,UGC,ESO...) *** alphabetical ** pa position angle (N- E) in degrees typ morphological type (e.g. 'E','Sab','SBa','SO') *** alphabetical ** ring 'R' for Ring galaxies, otherwise ' ' (blank) *** alphabetical ** multiple 'M' for multiple galaxies, otherwise ' ' (blank) *** ...

... 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. ...

... This program was created for correlating chosen regions in the series of fts images. ... Chosen regions' . ... In this section the program counts the integral for each region of the grid for each image. ... As a matter of fact, the integral is total brightness of the region and it is counted by 'int_tabulated' IDL function. ... In addition, the program will show the count of the regions which correlate with the corresponding region (the brighter region means the bigger count) and its contour. ...

Once students get the hang of it, they can find and measure the brightness of Delta Cephei in a few minutes. ... of Delta Cephei . ... Oct. ... The following table lists the measurements of Delta Cephei made by one amateur astronomer in autumn 1990. ... 4.0 . ... This activity is a simplified version of one that appeared in Hands-On Astrophysics, a series of activities prepared by the American Association of Variable Star Observers with support from the National Science Foundation. << previous page | ...

B?rbel Koribalski (ATNF) + HIPASS and ZOA teams . Presented here are preliminary results from the "HIPASS Bright Galaxy Catalog" which currently includes more than 1000 of the HI brightest galaxies according to their HIPASS peak flux in the global HI spectrum. ... Sky distributions (Aitoff projection, STG projection, Galactic etc.) Histograms I. Measured HI properties (HI peak flux, total HI flux, systemic vel., widths, etc.) ... Comparisons (total HI flux vs w50, w20 vs w50, etc.) ...

... References: %observed energy levels: Del Zanna and Mason, 2005, A , 433, 731 %theoretical energy levels (second column): Storey, Del Zanna, Mason, Zeippen, 2005, A , 433, 717 (scattering calculation) %theoretical energies (third column): Del Zanna and Mason, 2005, A , 433, 731 (SUPERSTRUCTURE calculation with term energy correction) %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % Giulio Del Zanna - June 7 2005 . ...

. 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

From: TerryMosel aol.com Date: Sat, 12 Jun 2004 19:20:37 EDT Subject: Delta Scorpii Bright? ... I quote: "Delta Scorpii tonight was estimated as not far off the brightness of Antares, unless it's my eyes playing tricks! According to Starry Night Pro 4.5, Delta is supposed to be mag 2.3 but it seems to be nearly equal brightness with Antares which is supposed to be mag 1.1 and that is still allowing for the difference in colour. ... Clear Skies, Terry Moseley . ...

Definitions of Magnitudes and Surface Brightness 1 The magnitude system 1.1 Apparent magnitude Astronomers are stuck with the antiquated old system of magnitudes and so a clear explanation of what this system is and how it relates to more sensible units is important. ... 1.2 Absolute magnitude Absolute magnitude is a logarithmic luminosity scale. ... One usually goes by the round about process of referring to the absolute magnitude of the sun. ... Magnitudes and surface brightness 6/6 ...

Stellarium 0.12.3 . ... FileљStructure . ... varstar Struct Reference . QStringљ . ... Magnitude at maximum brightness. ... Magnitude flag code. ... First minimum magnitude or amplitude. ... Second minimum magnitude or amplitude. ... The photometric system for magnitudes. ... Definition at line 41 of file StarMgr.hpp . ... QString varstar::photosys . ... QString varstar::stype . ... QString varstar::vtype . ... The documentation for this struct was generated from the following file: . ...

Distance of Galaxies and SNe Magnitudes. ... 32.30: 12.30: 14.30: *3458(SBa) 32.90 12.90 14.90 3549( Sbc ) 33.83 13.83 15.83 3556(Sc) 30.91 10.91 12.91 (8) 3610(E5) 32.87 12.87 14.87 3613(E6) 33.18 13.18 15.18 3619(Sa) 32.61 12.61 14 ... *3888(Sc) 33.45 13.45 15.45 (8) 3898(Sa) 32.00 12.00 14.00 (8) 3917(Sc) 31.59 11.59 13.59 3953(SBbc) 31.58 11.58 13.58 (8) 3963( SBc ) 34.09 14.09 16.09 3982( Sbc ) 31.89 11.89 13.89 3992( SBb ) 31.78 11.78 13.78 (8) 3998(SO) 31.93 11.93 13.93 4026(S) 31.40 ...

Measurement of Sky Brightness at the Iranian National Observatory Davoud Afshari1 and Sadollah Nasiri1,2 1Physics Department, Zanjan University, Zanjan 45195-313, Iran; Institute for Advanced studies in Basic Science (IASBS), Zanjan 45195-1159, Iran; Measurement of light pollution 2 Introduction Among 34 candidate sites at the central part of the country, 5 sites namely Garkesh (in Kashan ), Kolahbarfi(in Kashan ), Deynava (in ... One of these is light pollution. ...

You Can Make Stellar Images Brighter . Articles | ... A few months ago I wrote an article titled "You Can’t Make Them Brighter". So why am I now writing that you can make them brighter. ... The image of a focused star is actually a small disk called the Airy disk, named after the 19 th century scientist Sir George Airy. ... For a given aperture, a smaller Airy disk means that the light is focused to a smaller disk and is therefore brighter. ... www.astronomy.net . About Astronomy Net | ...

... Recognized since antiquity and depicted on the shield of Achilles according to Homer, stars of the Hyades cluster form the head of the constellation Taurus the Bull. ... Comet Hale Bopp Over Val Parola Pass . ... Welcome to the December solstice, a day the world does not end ... even according to the Mayan Calendar. ... M33: Triangulum Galaxy . ... Sometimes this shape is a sphere, sometimes a double lobe, and sometimes a ring or a helix. ... NGC 922: Collisional Ring Galaxy . ... December . ...

... Each DFS Department official document has to be issued according to the following internal procedure. Documents to be distributed outside DMD division must also be issued according to the Technical Archive procedure . ... Several documents are also available as complete templates defined internally for DFS Department documentation (e.g. template for Test Plan, for Test Report, .. ... Define the internal document number as: dfs-volxx-yyy-zzzz . ... Document title, . ... Issue number (e.g. 1). ...

November 2006 Astronotes 1 Candles in the Dark Image Credit: Wikipedia.org By Colin Johnston, Science Communicator Since the mid-ninteenth century astronomers have used the principle of parallax to measure the distance to other stars. ... How then can we tell, for example, that M31, the galaxy in Andromeda, is 2.2 million light years away? It would be straight-forward to tell how far away a star was if it was exactly the same brightness as our own Sun. ...

NAUTICAL ASTRONOMICAL YEARBOOK for 2017 (in Russian) . Foreword . ... NAY) is the daily visual geocentrical equatorial ephemerides of brightest navigational stars ? the Sun, the Moon, four major planets (Venus, Mars, Jupiter, Saturn) and of the 69 brightest stars, and the time of the rising and setting of the Sun and the Moon, the time of the beginning and the end of civil and navigational twilights, the azimuths of the upper limb of the Sun on rising and setting. ...

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). ...

... SKY IN THE HIGH-ENERGY GAMMA-RAYS ACCORDING TO THE DATA OF SAS-2 (1972-1973), COS B (1975-1982), GAMMA 1 (1990-1992) AND EGRET (1991-2000) . ... View of the sky in the gamma-rays of energy above 100 Mev according to the EGRET data. The small bright spots correspond to compact sources. ... COMPACT SOURCES . Compact high-energy gamma-ray sources according to the 3-d EGRET catalog. ... Unidentified sources . ... previous page . next page . main page . CYGAM (PDF, 450 Kb) . ...

... 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. ...