Astronotes Armagh Planetarium's Stellar Blog! ... Stars . ... Telescopes and Observatories . ... The majestic star-forming region in the Lagoon Nebula. The pale ring to the right is an internal reflection in the telescope.?а (Image credit: ESO/ VPHAS+/ V. Kalari and J. Vink (Armagh Observatory) . ... The 18 component images were further processed twice. ... Venu and his colleagues use images like this to identify individual young forming stars in the Lagoon Nebula and determine their ages. ...

It could be that SETI signals have arrived at the Earth, but are lower then the noise level, and our receivers cannot detect them. ... Fig. ... It follows that two zones form around the star with civilization X: "Zone Yes", where its SETI signal can be detected, and "Zone No", where its signals are hidden by noise (Fig. ... In practice, it is more efficient to use a time factor, since the problem of SETI contact does not limit the duration of the signal element and semantic text. ...

... This sp ectral distribution is defined b oth by the energy distribution in the target star's sp ectrum and by the sp ectral resp onse of the detector, i.e. by the central wavelength 0 and the effective sp ectral bandwidth . ... On the right: The collection of the MASS sp ectral resp onse curves. ... Table 1: Integral characteristics of the resp onse curves of the MASS devices. 0 -- central wavelength, ef f -- effective wavelength for A0 V stars, -- effective bandwidth (integral under the curve). ...

. Table 2. A list of major far-side flares detected from B-streaks in STEREO/EUVI 195 °A images .

... EUV Observations of the Solar Corona with Superhigh Spatial Resolution in the ARCA Project S. V. Kuzina, S. A. Bogacheva, A. A. Pertsova, S. V. Shestova, A. A. Revaa, b, and A. S. Ulyanova, b a Lebedev Physical Institute, Russian Academy of Sciences, Moscow, 119991 Russia b Moscow Physicotechnical Institute, Moscow, 115409 Russia e mail: kuzin@lebedev.ru Abstract--Observing the Sun's hot corona with sub second spatial resolution is important in solving a num ber of basic solar physics problems. ...

Lunar and Planetary Science XXXIV (2003) 1757.pdf PETROLOGY AND OXYGEN ISOTOPIC COMPOSITIONS OF ANOMALOUS ACHONDRITE NWA 011. ... In an attempt to resolve this issue, we have investigated mineral chemistry and oxygen isotopic compositions on portions of NWA 011. ... Figure 1. ... The results confirm the unusual oxygen isotope compositions of NWA 011 observed previously [2]. suggesting that post-crystallization processes did not significantly alter the original composition of NWA 011. ...

... Top Attractions of Russia . ... We sincerely hope the situation will improve and we are planning to include these regions as soon as it becomes possible. ... Southern Urals (including Bashkir State Reserve) . ... Eastern Sayan Mountains (including Tunka Range) . ... Altai Mountains (including Lake Teletskoe, Altai State Reserve, Katun Range) . ... Sub-Polar and North Urals and virgin forests of North of European Russia (including Yugyd-Va National Park and Pechora-Ilych National Reserve) . ...

... VaST is a software tool for finding variable objects on a series of astronomical images. ... VaST performs object detection and aperture photometry using SExtractor on each image, cross-matches lists of detected stars, performs magnitude calibration with respect to the first (reference) image and constructs a lightcurve for each object. ... VaST FITS image viewer ./pgfv . ... Part I" PZP, vol. ... K. V. Sokolovsky, S. A. Korotkiy; "New Variable Stars Discovered by the NMW Survey" PZP, vol. ...

... part 1 | ... Regular orbits of planets of the Solar system during their formation, . ... Radius of the orbit in perigelion . Regular orbit of a planet in time of its formation from . Divergence with actual radius . ... Name . ... orbit . ... Radius . ... Mercury . ... 1,3487 . ... 1,8191 . ... X-planet)* . ... Orbits of prospective planets destroyed in present . Orbits, on which planets of Mercury, Moon and (DePho) * presumably were before. | ...

NMW survey overview . Access image archive . ... The New Milky Way survey aims to detect bright (V<13.5) optical transients near the Galactic plane using an automated wide-field (8x6 deg.) system capable of surveying the whole Milky Way area visible from the observing site in one night. ... All images obtained during the transient search survey are available online (please use the image archive access form ). ... Images per field: . ... Images per night: . ... Milky Way imaging time: . ...

... GRIN lenses for telecommunication optics applications ? GTC (gradient telecom) lenses. ... GTC lenses are used in different fiber-optic devices: collimators, couplers, isolators and WDM etc . ... 2.Diameter . GTC lenses diameters are 1.0 mm, 1.8 mm, 3.0 mm and 4.0mm. ... 1.0 mm -3.0 mm diam GTC lenses are supplied in 0.22P, 0.23P, 0.25P, 0.27P and 0.29P length. 4.0 mm diam GTC lenses are supplied in 0.11P length. ... GTC . ... 3 scratches with 5mkm max width and 200mkm max length are allowed . ...

Vertical Structure of the Galactic Disk in the Solar Neighborhood . ... It was found that the Sun lies 9?2 pc above the plane of hte Galactic disk in the direction of North Galactic pole and that F0-F9 stars contribute 0.0035M /pc 3 to the density of the Galactic disk. ... THE DENSITY OF F STARS IN THE PLANE OF THE DISK      Since our sample is comlete to within 50 , the Z obs distributions shown in Fig.2 make it possible to determine the number of F stars per unit volume of the Galactic disk. ...

Initial orbit determinations of NEO-2005 with Pulkovo AMP-method O.P. Bykov Central Astronomical Observatory of RAS, Russia, 196140, Saint-Petersburg, Pulkovskoye shosse 65/1 Abstract Pulkovo Apparent Motion Parameters Method (the AMP-method) was proposed by prof. A.A.Kiselev and developed by his colleagues for initial orbit determinations of Artificial Earth Satellites, Space Debris, Asteroids, and Comets on the base of very short observational arc. ... Table 4 Apparent Motion Parameters for 2005 EE. ...

Microsymposium 38, MS083, 2003 (A4 format) MERCURY: LOCAL VARIATIONS OF THE PHOTOMETRIC RELIEF. ... Because of trajectory and pointing angle constraints the planet could be observed from Mariner 10 only over a small range of phase angles between about 75o and 110o. Therefore the photometric investigations are restricted to measuring the distribution of brightness on the Mercurian disk. ... Raw versions of real-time processing pictures FDS 0000984 and FDS 0000986 were used (images 196 and 202). ...

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... MASTER Net is 56 square degrees per 1 exposition . ... 06 Dec 2015: GRB 151205B: MASTER-NET early optical observations GCN18665 . ... 18 Nov 2015: GRB 151118A: MASTER-NET optical observations GCN18613 . ... 12 Nov 2015: GRB 151112A: MASTER-NET optical limit GCN18591 . ... 07 Nov 2015: GRB 151107A: MASTER-NET optical observations GCN18565 . ... 31 Oct 2015: Five OTs detected by Global Robotic MASTER Net ATel8232 . ... 02 Oct 2015: GRB 151001B: MASTER-NET early optical observations GCN18380 . ...

... A model for the chemical evolution of a disk galaxy is presented. The model reproduces all the basic . ... investigations of the star formation history. ... the galaxyЫand incorporating a delay in the onset of star formation make it possible to model different scenar- . ios for the evolution of a galaxy's luminosity. ... evolution of massive galaxies. ... of reconstructing the star-formation history and galactic luminosity from observations of galaxies at different . ...

... The spectrum of the brightest star, our Sun, shows several dark gaps perpendicular to the flow of it?s colours (figure 1). These so called spectral absorption lines where discovered in 1802 by the English scientist William Wollaston. ... Some stars as Pollux show a spectrum similar to that of our sun with strong Ca II and Fe II lines, others as Sirius or Vega show strong absorption lines of hydrogen, others, as Mira show very complicated spectra due to molecular absorption lines (see figure 5). ...

... 18941904; Bespalov P.A. Effective saturation of absorption in a plasma magnetospheric maser. In book: Nonlinear Space Plasma Physics, R.Z. Sagdeev -Editor-in-Chief, American Institute of Physics, 1993, p.339-346]. Magnetospheric plasma maser [Bespalov P.A, Trakhtengerts V.Yu., ... In a magnetospheric plasma maser (MPM) the relatively dense magnetised plasma and the conjugate ends of a magnetic trap form a quasioptical resonator for electromagnetic waves. ...