منابع مشابه
The Second Us Naval Observatory Ccd Astrograph Catalog (ucac2)
The second USNO CCD Astrograph Catalog, UCAC2 was released in July 2003. Positions and proper motions for 48,330,571 sources (mostly stars) are available on 3 CDs, supplemented with 2MASS photometry for 99.5% of the sources. The catalog covers the sky area from −90 to +40 degrees declination, going up to +52 in some areas; this completely supersedes the UCAC1 released in 2001. Current epoch pos...
متن کاملValerie Schmidt
Introduction We have all heard the old joke of school being all about the three “R’s”, Reading ‘Ritin and ‘Rithmatik, but because of increasing class sizes and reported lack of instruction time, writing has been passed over for the more “important” subjects. The advent of computers and the increasing ease of word processing have given teachers the ultimate excuse, but most beginning composition...
متن کاملAngle-of-arrival anemometry by means of a large-aperture Schmidt-Cassegrain telescope equipped with a CCD camera.
The frequency spectrum of angle-of-arrival (AOA) fluctuations of optical waves propagating through atmospheric turbulence carries information of wind speed transverse to the propagation path. We present the retrievals of the transverse wind speed, upsilon b, from the AOA spectra measured with a Schmidt-Cassegrain telescope equipped with a CCD camera by estimating the "knee frequency," the inter...
متن کاملThe central region of the Fornax cluster – I. A catalog and photometric properties of galaxies in selected CCD fields
We present a photometric catalog (based on V and I photometry) of galaxies in the central regions of the Fornax galaxy cluster. Our 11 CCD fields cover 0.17 square degrees in total. The limiting surface brightness is around 24 mag arsec, similar to that of Ferguson’s (1989) catalog, whereas our limiting total magnitude is around V ≃ 22 mag, about two magnitudes fainter. It is the surface bright...
متن کاملCircumcision Compressive Dressing (CCD)
Aims: Circumcision is a minor urologic surgery that is widely used in Iran and other Muslim and non-muslin countries. A common complication following this procedure is bleeding. The aim of this study was to compare compressive dressing with no dressing and conventional dressing options for circumcision in point of bleeding after circumcision. Materials & Methods: Between October 2010 and July ...
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ژورنال
عنوان ژورنال: The Astronomical Journal
سال: 2010
ISSN: 0004-6256,1538-3881
DOI: 10.1088/0004-6256/140/2/652