... 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 , 2006 . ... The draft classification (version August 9, 2006 ) for new GCVS versions . 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 . ... DCEP , DCEPS , CEP ( B )                                                         DCep , DCep 0, DCep 1, DCepB 01, DCepB 12 . ... Eruptive variables . ... New type: PP (a proto-planetary . ...

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) . ...