Follow-up astrometry and recoveries are made with the ANU 40 inch (1.0-m) f/8 reflector at Siding Spring Observatory (IAU code 413). ... A routine follow-up of 2003 WY153 on 2003 Dec 15 became much more than routine when a faint object with unusual motion vector was found close to the target asteroid. ... During routine astrometry with the 1.0-m to improve the orbit of the Apollo asteroid 2004 CB, the asteroid was found on March 30 to have a short tail! ... Siding Spring Survey Main Page . ...

Next: CCD Scientific Performance Up: CCD Operation Previous: CCD Operation . A visible light photon releases only one electron-hole pair, and consequently many photons must be collected in each pixel for a measurable signal to be produced. ... This use as an imaging X-ray spectrometer requires that no more than one photon is incident on each pixel in any image frame, which imposes a requirement that image collection times be limited to ~seconds for typical astronomical applications. ...

... ТАЛ-3: . ПЕРВЫЙ ЭТАП МОДЕРНИЗАЦИИ . В есной 2000г. мне довелось приобрести телескоп ТАЛ-3 новосибирского производства. ... Диаметры компонентов: мениск - 210мм, главное зеркало - 214мм, вторичное зеркало - 66мм. ... Эту проблему я решил путем доработки электронной схемы управления (см. ниже), благо шаговый двигатель в состоянии развивать достаточные для плавного наведения скорости. ... Надеюсь, все же, что эта статья будет первой, но не последней публикацией, посвященной модернизации ТАЛ-3. ...

To change the Scaling Function (how pixel values are binned into color levels): . ... For example, the basic grey-scale color map specifies no intensity for any color at the lowest color level, full intensity for all colors at the highest color level, with the red, green and blue intensities varying linearly for intermediate levels. ... At low bias, low color levels (i.e., low pixel values) will have non-zero intensities, while at high bias only high pixel values will have non-zero intensity. ...

... Ciel Espace, le magazine qui vous guide toujours plus loin . ... des actualit†йs . ... les plus belles images de l'Univers d†йcrypt†йes pour vous . ... des pages consacr†йes †а la publication de vos photos Mais c'est aussi une vraie communaut†й avec laquelle partager votre passion et nourrir votre curiosit†й. Accueil Mercure : une terre de contraste . ... Cette vue du sol de Mercure vient dтАЩ†кtre publi†йe par les †йquipes de la sonde Messenger, actuellement en orbite autour de la plan†иte. ...

The following is a list of all known ground-based solar observatories that operate on a routine basis to obtain scientific observations of the sun. The observatories are sorted according to longitude, from east to west. There 100 observatories on the list and 180 separate "instruments". ... Telescope: BiSON site . ... Culgoora Solar Observatory . ... Instrument: Solar Flare Telescope . ... Nobeyama Solar Radio Observatory . ... Telescope: RSTN Site (Radio Solar Telescope Network) . ...

... Class . ... METHOD . DETAIL: FIELD | ... java.lang.Object ij.plugin.ContrastEnhancer . ... public class ContrastEnhancer . ... Implements ImageJ's Process/Enhance Contrast command. ... This method is called when the plugin is loaded. void . ... Constructor Detail public ContrastEnhancer () . Method Detail public void run (java.lang.String arg) . ... public void stretchHistogram ( ImagePlus imp, double saturated) . public void stretchHistogram ( ImageProcessor ip, double saturated) . ...

... Deep ATCA imaging identifies a new black hole candidate in the globular cluster 47 Tucanae . ... Recent observational and theoretical work has suggested that stellar-mass black holes may exist in globular clusters, in contrast to previous theoretical predictions that they should be expelled via mutual gravitational interactions early in the lifetime of a cluster. ... 47 Tuc X9 is shown in purple, lying within the scatter of the black hole correlation. ... today * ATNF | ... ATCA | ...

... Bojan Nikolic web pages (r. 329) . ... Using high-resolution three-dimensional realisations of turbulent fields, we investigate the limits on achievable performance of atmospheric phase correction using water-vapour radiometers arising from following effects: the incoherent measurement of power from water by the radiometers (in contrast to coherent detection of the astronomical signal); the different tapers of the response patterns of the astronomical and radiometer receivers; and, the ...

... Up: Archives and Information Services . Previous: Search and Retrieval of the AXAF Data Archive on the Web using Java . ... Our Web interface to the HST archive (WDB) was substantially augmented during the past few months: A seamless integration of Java applets and CGI interfaces to the database now allows basic manipulation and visualization of data. ... These applets only require a common Web browser and offer very helpful features to facilitate archive data selection. ...

... Planets . ... Stars . Exoplanets . ... Most exoplanets so far discovered fall into the category of тАШhot JupitersтАЩ, these are giant planets orbiting very close to their parent star. ... Note that we have discovered so many hot Jupiters because they are the easiest type of planet to find, they are not necessarily particularly common in the galaxy. ... Subsequently several similar hot and€а fuzzy worlds have been discovered the same way, proving this that this planet is not a one-off oddball. ...

... One striking feature is a small source of almost pure H 2 line emission, which is located near one of the compact sources in Orion reported by O'Dell and collaborators (HST-18 = 203-504). ... H-H objects, Proplyds, Orion Bar, H 2 . ... We obtained a series of images across the bright rim of the Orion Bar near the peaks of mm-wave molecular line emission with NICMOS cameras 1-3 (NIC1, NIC2, NIC3) in several filters on 1998 February 18. ... The suggestion of an H-H object does not seem compelling. ...

... Imaging GRIN Rod Lens (HAG's) | Relay Rod Lens (LAG's) | ... The Refractive Index Distributions (RID) in GRIN lens preforms are made by multi-stage optimized ion-exchange diffusion between silicate mineral glasses and salt melts. ... In the LAG lenses - L ow A perture GRIN the nature of the changing of refractive index in glass via ion-exchange lies mainly in molecular volume increase. ... LAG lenses are specially treated to create the dark anti-flick surface coating (Fig.2). ...