... Up: Data Analysis and Processing Techniques . ... Also, a method for quality control of CCD observations is suggested. ... Everyone who observes a celestial object using a CCD detects moving celestial objects as a ``by product''. ... We hope that our investigations may be useful for near-Earth space control and also for searches of the moving celestial objects through analysis of old and new CCD frames obtained at any amateur or professional astronomical observatory. ...

Databases (NSDC) of the Natural Planetary Satellites. ... NSDC: Database of astrometric observations of Natural Planetary Satellites . ... They are thoroughly looking for observations in different sources, creating their owndatabases which are then mostly inaccessible to other researchers. ... In the file "content" with explications, the reference is given to the data source as well as the bibliographic reference. ... Data sources. ... Why a specific bibliographic database for Natural satellites? ...

... Variation of systematic errors for USNO A2 (in mas per year) 23 .914 0.082 0.250 0.418 0.586 0.753 0.921 1.089 1.257 1.425 1.593 4 4. 3. 3. 3. 3. 3. 3. 3. 3. 3. 15 ± 7± 1± 3± 3± 10 ± 10 ± 11 ± 6± 10 ± 12 ± and their errors USNO UCAC USNO UCAC A2.0 2 3 B1.0 4 (1998) (2006) (2003) (2012) 37 27 11 4 732 529 778 501 050 078 775 387 (34 610 829) (17 209 447) (9 744 401) () Distribution of observations ( ...

Going Deep with ALFA E-ALFA Ultra-deep field group February 17, 2004 Abstract The improved sensitivity, RFI excisions and baselines expected with ALFA will open a new area of high sensitivity observations for the Arecibo Telescope. There is a significant scientific interest in single sight-line observations to unprecedented depth with integration times up to about 100 hours per beam. ... The total proposed integration time is 35 hours per beam. ... Higher sensitivity to unresolved sources. ...

... The hydrogen line is the most pronounced absorption feature in spectra of B-type stars. Two effects play the dominant role in observed behavior of : the Stark broadening of the line absorption coefficient and interstellar absorption. ... Keywords: B-type stars, H I line, Stark effect, interstellar absorption . ... Thus having a good description of the Stark effect we investigated early B-type stars, where interstellar absorption may play an important role. ... 4 (IUE observations) and Fig. ...

... III (OCR by CDS, corrections by H.Andernach) The first results of a search at 1410 MHz for 243 extragalactic objects from the Southern Hemisphere identified as quasars by Veron-Cetty Veron (1983) in "A Catalogue of extragalactic Radio-Source Identifications" are reported. ... The data are from Parkes catalogue . ... These data were modified using 'A catalogue of Quasars and Active Nuclei (2nd Ed.)' (1985), 'A catalogue of Quasars and Active Nuclei (3rd Ed.)', (1980), all of them by Veron-Cetty Veron...

Circumstances of (99942) Apophis approaches to the Earth in 2029тИЪ2036 . ... In so doing we consider A2 component of additional acceleration in orbital coordinate system, which is present in many near-Earth asteroids and some small main belt asteroids, as a manifestation of Yarkovsky effect. ... It means that Yarkovsky effect does not serve to increase the collision probability in 2036. ... asteroid Apophis, collision with the Earth, the Yarkovsky effect. ...

... Direct observation of the vortex structure in high- T c superconductors in tilted magnetic fields. Abstract: . A high-resolution Bitter technique has been used to observe an effect of tilting the external magnetic field on the flux line lattice (FLL) in Tl 2 Ba 2 CaCu 2 O 8+x single crystals. ... The reason is believed to be that the formation of the equilibrium vortex state (vortex chains) was prevented by strong pinning, revealed for our crystals by the M(t) curves. ...

Taking into account the result by Watanabe P=2.5 days in outburst, I reconstruct old set of photographic observations being partly lost, and add some new observations. ... The periodogram calculated with the method by Lafler and Kinman is shown. ... The last periodogram indicates peaks corresponding following possible periods with the double-wave light curve: 0.4236, 0.4650, 0.5379, 0.6064, 0.7365, 0.871, 1.168, 1.5437, 2.8173, and 6.89 days. ...

XMM-Newton Science Analysis System Page: 1 rgscombine Jenny Carter (XMM-Newton SOC, jenny.carter@sciops.esa.int) (updated by CG) May 10 2007 Abstract Combines a list of spectrum les to create one combined spectrum le, and the corresponding list of response matrices and background spectrum , to create one nal response matrix and background ... Spectra can be in COUNTS or RATE (as produced by rgsbkgmodel) lepha no le The le name for the output combined spectrum. ...

Find Similar Abstracts . ... Determination of the component masses and inclination of a binary system containing a pulsar from relativistic effects . ... BINARY STARS, ORBITAL ELEMENTS, PULSARS, RELATIVISTIC EFFECTS, STELLAR MASS, APSIDES, DOPPLER EFFECT, FREQUENCY SHIFT, INCLINATION . ... Use: Authors Title Abstract Text Text Query with Keywords Return: Query Results Query Form Database: Astronomy Instrumentation Physics and Geophysics ABSTRACT QUERY USER FEEDBACK HELP ...

... The experience of determination of the link between radio sources and dynamical ref