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. ...

... The Science Operation Department is composed of Astronomers, Telescope Instruments Operators(TIOs) and Data Handling Administrators(DHAs). ... Astronomers have proposed several methods to quantitatively measure the amount of turbulence above the telescope, which the most common ones is Differential Image Motion Monitor (DIMM). In optical testing, the Hartmann test is the common method to test the quality of optical components. ... Hartmann mask consists of 48 lenses. ...

Giant Jupiter. Jupiter . ... Jupiter has no solid surface that is why speaking about its dimensious point the radius of the upper border line of the clouds, where the presseru is about 10 KPa; radius of Jupiter on the equator is 71400 km. ... The Jupiter satellites. ... Nowadays 16 satellites of the Jupiter are known: Adrastea, Mitis, Amaltea , Phina,then 4 Galilei satellites: Io , Europe , Hanimed , Callisto , Leda, Aimalia, Zicitea, Elara, Ananke, Carme, Pasipe and Sinope. ... Jupiter's ring. ...

IAA Transactions, No. 8, ``Celestial Mechanics'', 2002 The Major Planets Satellite Observations with CCD techniques A. Lopez Garcia 1 , J. A. Morano Fernandez 2 , A. F. Martinez 3 , E. Yagudina 4 1 Astronomical Observatory, Valencia University 2 Astronomy and Astrophysics Dept., ... Casas R., Krasinsky G. A., Yagudina E. I. CCD observations of relative positions of Galilean satellites of Jupiter and star 104297 HIPPARCOS (1997 November 12 -- 124). Communications of IAA, 1998, No. ...

... SATELLITE: An object that revolves around a planet. ... SIDEREAL DAY: The length of a planet's rotation period relative to the stars. SOLAR SYSTEM: The sun and all the objects that are held in its gravitational field and move around it. ... SUPERIOR CONJUNCTION: The position of a planet when it is on the opposite side of the Sun from Earth (thus making in invisible). ... TRANSIT: The movement of an object between the Earth and the Sun and showing on the surface of the sun as a black dot. ...

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In ancient times the solar system was thought to be the whole Universe, so the study of planetary motions was cosmology. ... The planets other than the Moon and Sun generally move West to East through the stars, but occasionally stop and move in the opposite direction ( retrograde motion). In order to explain the retrograde motion of the planets, the geocentric model of the Solar System shown above puts the planets on small circles called epicycles . ...

... Some people have asked why Venus appears in "different places" in these photos. ... Dave Wallace . ... It was taken from Brookline, NH using my Celestron 5" SCT through a Tutill Solar Skreen filter using Fuji Superia Reala color print film. ... Marblehead Middle School Fifth Grade Students viewed the 2004 Transit of Venus from Riverhead Beach on Marblehead Harbor when the Sun broke through the clouds at about 6:45 a.m. Eyepiece projection with my 8" Meade SCT and Televue 32mm Plossl worked well. ...

... The experience of determination of the link between radio sources and dynamical reference frames is presented. To obtain this connection we used a series of very long baseline interferometry (VLBI) observations of the spacecraft Phobos-2 and angularly nearby quasars. ... The dynamical reference frame is determined by equator and equinox of these ephemerides. ... References . ... The relative orientation of the radio and dynamical reference frames can be described by a sequence of three rotations . ...

Eyepieces Forum Message . Forums: . ... Eyepieces | ... Pictures . ... Posted by Jarvis Krumbein on November 2, 2003 05:23:47 UTC . ... I was having serious problems manhandling the tube assembly of the old setup around as the bloody thing was very heavy. ... Pictures - gjeckes - November 2, 2003 - 08:06 UTC . ... www.astronomy.net . About Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... Slit-plate Deflection . ... One end of the approximately 2m long fiber is inserted into a hole in an aluminum plug-plate, and the other end is fed into and supported by a slit-plate. ... Since the fibers are to be calibrated from a fixed position, it will be necessary to know how much the slit-plate deflects under its own weight due to gravity, as well as how much it deflects under the weight of the fibers and harnesses. The deflection of two plates of thickness 3.175 and 3.607mm was tested. ...

... Accurate identification of physical binary star systems has become of increasing interest in recent years. ... Identification of physical binary star systems, with an estimated reliability of such identifications based on the theory of probability, is also important for current and future efforts to find binary star systems that are candidates for observations with the aim of determining their orbits and component masses. ... probability of the proximity of proper motions and ; . ...

... Transforms a qpoe file according to the specified parameters. ... Any type of filtering can be applied to the input qpoe file, including region filtering. In addition, the size of the output event record can be different from the size of the input event record. Of course, usually one makes the output record equal to or smaller than the input. If the output record size is made greater than the input record, a warning is issued and the ``extra'' part of the record is undefined.) ...

... 11 Yellow-Green (78% transmission): Contrasts well with the red and blue characteristics of surface features on Jupiter and Saturn. ... 82A Light Blue (73% transmission): Useful on the Moon, Mars, Jupiter, and Saturn, this subtle pale blue filter enhances areas of low contrast while avoiding significant reduction of overall image brightness. ... Meade Series 4000 Photo-Visual Color Filters may be ordered individually or in the following sets: . ... Meade Series 4000 Broadband Nebular Filters . ...

. Ordinate X (Date) . - . relative time of recent update of Web Site / relative time of recent update of a group of Web Sites. Ordinate Y (Size) . - . may be the quantity of letters, pages, outside links, pictures, binaries, error links, or given keywords in the HTML pages of Web Site / a group of Web Sites. Ordinate Z . - . item of list. Brightness (in one-color worlds) . - . the quantity of links to the outside in the HTML pages of Web Site.

... Sciences) - (01.03.02 - Astrophysics and Radioastronomy), Main Astronomical Observatory of Ukrainian National Academy of Sciences, Kyiv, Ukraine. ... Sciences) (01.03.03 - Geliophysics and Solar System Physics), Main Astronomical Observatory of Ukrainian National Academy of Sciences, Kyiv, Ukraine. ... 1977 - 1981 - Engineer, Main Astronomical Observatory, Ukrainian National Academy of Sciences, Kiev, Ukraine . ... Institute: Main Astronomical Observatory of Ukrainian National Academy of Sciences . ...

Catalogue of double stars . The Pulkovo Visual Double Star Catalogue Based on the Relative Positions Derived from the Photographic Observations Made with 26-inch Refractor since 1960. ... Into the present catalogue the seasonal mean relative positions ( r and q 2000 ) are included for 234 visual double stars observed at Pulkovo with 26-inch refractor from 1960 through 2001. ... The photographic and CCD observations of visual double stars are being continued now. ... The Format of the Catalogue. ...

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... Identification and Analysis of Binary Star Systems using Probability Theory E. Grocheva and A. Kiselev Photographic Astrometry Department, Pulkovo Observatory, S.Petersburg, 196140, Russia, Email: gl@spb.iomail.lek.ru Abstract. Accurate identification of physical binary star systems has become of increasing interest in recent years. ... We chose 76 double stars from Pulkovo's observation program and calculated the probabilities of a random distribution for these pairs. ...

RELATIVE SUNSPOT NUMBERS Description of Data from SGD Explanation of Data Reports: Relative Sunspot Numbers -- The relative sunspot number is an index of the activity of the entire visible disk of the Sun. ... The provisional daily Zurich relative sunspot numbers, Rz, were based upon observations made at Zurich and its two branch stations in Arosa and Locarno and communicated by M. Waldmeier of the Swiss Federal Observatory. ... This indicates the uncertainty above and below the predicted number. ...