... The draft classification (version August 9, 2006) for new GCVS versions . IAU XXVIth General Assembly, . ... Along with the "+" sign (coexistence of two types), it is suggested to introduce the "|" sign (meaning "or") – for classification options for the same object, e.g. EC|Ell, EC|RR. Pulsating variables . Present: . ... L, Lb (for red stars) . ... Eruptive variables . ... Move to rotating variables . ... ACV, SXARI . ACV . ... Cataclysmic variables and other stars with outbursts . ...

. Prague, August 16, 2006 . Present classification : Suggested: SR, SRA, SRB, SRC, SRS SR (the regularity level should be indicated by the presentation of the light elements; if a star is a supergiant, it will be obvious from its spectral type) SRD SRd (we feel not inclined to introduce the UU Her type) ZZ, ZZA, ZZB, ZZO ZZ (subtype is contained in the spectral type) . BLBOO BLBoo . GDOR GDor . PULSATING VARIABLES (CONTINUED)

7.0 Application of Back-illuminated CCD Technology . As indicated in the absolute performance characterization detailed above, low noise, back-illuminated, low light level CCD (BCCD) cameras offer superior low light level performance to image intensified approaches. ... Figures 7.3 and 7.4 show a similar test of bar targets clearly illustrating the superiority of the back-illuminated CCD for low light level imaging of high resolution targets at a range of 400 meters. ...

... AT 39.3/119 Subject: Gravity Distortion Correction via Subreflector Motion This memo serves to document our interactions on your proposed gravity correction system. ... If you "best fit" the distortions to your design surface (see Levy, Structural Engineering of Microwave Antennas, IEEE Press, New York, 1996 Chapter 2) the worst case error over the elevation angles is 0.0455mm which gives 97.1% efficiency at 90 GHz. ...

Optical Filters . The polarizer quads were also designed to map onto a four-faceted WFC configuration and, consequently, also require a partial filter rotation of -33 degrees to move the filter quadrant 1 (nominal polarization angle 135 degrees ) into WFCs 2 and 3, with some vignetting of both camera fields. Several additional partial rotations have been added to allow observations with different polarization angles on the same CCD. ...

Astronomy Picture of the Day . ... The Sudbury Neutrino Observatory Institute Explanation: The Sudbury Neutrino Observatory (SNO) has been detecting so few neutrinos from the Sun that the Standard Model of fundamental particles in the universe may have to be revised. Pictured above is the SNO as it was being built. ... The most popular model for fundamental particles , known as the Standard Model , did not predict such schizophrenic neutrinos . ... The Sudbury Neutrino Detector . ...

Next: Methods for Structuring and Searching Very Large Catalogs . ... We have explored two automated classification methods: supervised classification using Artificial Neural Networks (ANN) and unsupervised classification using Self Organized Maps (SOM). These methods are used to classify IUE low-dispersion spectra of normal stars with spectral types ranging from O3 to G5. This paper describes the application of automated methods to the problem of the classification of stellar spectra. ...

... Let us first find out which way -- rise in spectral resolution with some loss in the S/N ratio or increase in the S/N ratio with a fixed spectral resolution -- is better for the purpose of reduction of equivalent width determination errors. ... N -- number of counts for 1 ? ... line equivalent width, . ... Thus if the spectral resolution is managed to be increased (i.e. to decrease )without loss in the number of counts falling at 1 ?, the equivalent width measurement error is then proportional to . ...

... V.V. Busarev, Sternberg State Astronomical Institute, Moscow University, . ... V. V. Busarev1, M. N. Taran2, V. I. Fel’dman3 and V. S. Rusakov41 Lunar and Planetary Department, Sternberg State Astronomical Institute, Moscow State University, 119992 Moscow, Universitetskij pr., ... 1 Sternberg State Astronomical Institute, Moscow University, Universitetskij pr., ... V. V. BUSAREV, Sternberg State Astronomical Institute, Moscow University, Russian Federation (RF) (E-mail: busarev@sai.msu.ru); . ...

... Version 1.7 (2008-09-17) Introducing two new parameters in order to include the capability of removing scattered-light features from the rotated grism image. Version 1.5 (2006-11-09) A lot of small changes are introduced to get more accurate RA and DEC coordinates of the grism image sources (SSC-SPR-3633) . ... Version 1.0.1 - the output image is slightly enlarged in order not to miss the pixels that go outside of the image due to distortion correction (SSC-SPR-3318) . ...

From: TerryMosel aol.com Date: Fri, 29 Jul 2005 16:33:14 EDT Subject: Pluto's little brother.. ... I've just got the following hot news from Prof Alan Fitzsimmons at QUB, indicating that the object is likely to be smaller than Pluto. ... This is the object at the positions you listed in your earlier E-mail. ... Also, the amplitude of the lightcurve implies an axial ratio of 1.4 - this object is nowhere near spherical (albedo markings are unlikely to be the cause as the lightcurve is very symmetrical). ...

THE 75th NAME-LIST OF VARIABLE STARS. ... The 75th Name-List consists of two tables. ... the literature, taken from positional catalogues, including USNO A1.0/A2.0 and GSC, or determined by the authors); the range of variability (sometimes the column Min gives, in parentheses, the amplitude of light variation; the symbol ( means that the star , in minimum light, becomes fainter, than the magnitude indicated); and the system of magnitudes used ( P are photographic ...

... R2297 Date Received: 2007-Jan-30 11:01:19 Technical Page Proposal Type: General Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Urgent Planetary Radar Solar System 6 Hours Radar Imaging of a Fast-Rotating Near-Earth Asteroid Based on its visual brightness, asteroid 2006 AM4 is about 150m in size. ... This ob ject will be observable at Arecibo with enough SNR for imaging on 2007 Feb 1-3. ...

Radiative losses have been determined by using the Arcetri Code line emissivities for each element calculated adopting a plasma electron density of 10 10 cm -3 . Each emissivity line is structured using the following format: An example from the Mg file (Phot cm 3 s -1 ) is given below: . ... Mail comments regarding interface to landi@poppeo.nrl.navy.mil Mail comments regarding spectrum data to mlandini@arcetri.astro.it, landi@poppeo.nrl.navy.mil ...

(transcribed by VH) Collecting conversation From the silence of the room Misguided information Telling lies will never do No better no location For improving the score Paid my contribution Won't play this game no more I'm done with hesitation Got no stationary blues Gonna use my imagination Like the way I used to do Headlong into passion A sensational move Made the right connection I'm falling for the groove chorus : ...

Rules and Regulations for a participant of the Olympiad . ... Don't write the conditions of problem in rough copy or clean copy. ... Rough copy. If you haven't time to rewrite solution (or a part of solution) in your clean copy, please make a note 'see rough copy' in Russian or English by accurate printed characters . ... In particular if solutions in clean copy and in rough copy are different, then clean copy is evaluated only. ... To write solutions of tasks in clean copy in arbitrary sequence. ...

... Automated Spectral Classification Using Neural Networks E. F. Vieira Laboratorio de AstrofТРsica Espacial y FТРsica Fundamental P.O.Box 50727, 28080 Madrid, Spain, Email: efv@lae#.esa.es J. D. Ponz GSED/ESA, Villafranca P.O.Box 50727, 28080 Madrid, Spain, Email: jdp@vilspa.esa.es Abstract. We have explored two automated classification methods: supervised classification using Artificial Neural Networks (ANN) and unн supervised classification using Self Organized Maps (SOM). ...

... IRAF View . This is the orientation of the image as viewed in an image display via IRAF (e.g. ximtool, saoimage). Note: This is different from the orientation of the image as viewed on a Macintosh, via Remark . ... A +X, +Y instrument offset will move a star in the direction indicated by the arrows. ... Note: The offset direction depends upon which interface the offset command was issued in! ... Note: This is different from the orientation of the image as viewed by IRAF. ...

The movie demonstrates a succession of 7 complete measurement frames of SCA-1 on rotating Interball-1 spacecraft. Diagram, inspired by Salvador Dali's paintings, shows all 64 viewing directions and 15 energy steps as spheres. ... The distribution of spheres along viewing direction is linear unlike logarithmic distribution in reality. ... Complete 3-D distribution is measured for about 10s. Rotation of the spacecraft during one measurement frame is neglected. ...