... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Risks Comparable to NEOs . ... The Increasing Rate of Discovery of Asteroids . ... Comet and Asteroid Collision Probabilities . ... Extreme albedo comets and the impact hazard (PDF Format) . ... Asteroid Impact Animations . ... Workshop on Scientific Requirements for Mitigation of Hazardous Comets and Asteroids - 2002 . ... The Spaceguard Survey Report, 1992 (PDF) . Tsunami from Asteroid/Comet Impacts . ...

M1 image More About M1 Nice Color Picture . ... M16 image More About M16 HST image . ... M31 image More About M31 Nice Color Picture . ... M42 image ; M43 image More About M42/43 Nice Color CCD Picture . M51 image More About M51 Color Image of M51 M51 Supernova . M57 image More About M57 Nice Color CCD Picture Very Deep M57 Image . ... M81 image More About M81 M81 Supernova Ultraviolet Image of M81 More about Ultraviolet Imaging . M82 image More About M82 M82 False Color M82 True Color . ...

. Next: Objects Up: Interface Previous: Interface Index . Please note, all integer indices in ASAP and iPython are 0-relative . Malte Marquarding 2007-08-16

... Radiation mechanisms of astrophysical objects: classics today . ... we invite you to submit papers based on your plenary, review or contributed talks or posters presented at the conference "Radiation mechanisms of astrophysical objects: classics today" to its Proceedings to be published by Armenian Academy of Science in 2016. Please note that participants who prepare the regular papers for the special issue of JQSRT on radiative transfer, etc. are also invited to submit papers to the Proceedings. ...

. Notes on individual objects and references . | HyperLeda home | Documentation | Search by name | Search near a position | Define a sample | SQL Search | . This catalogue reports notes found in the literature or added by HyperLeda. They are intended to point pecularities of some objects, mistakes in some data... or provide additional information about some references. Search an object in the notes catalogue . HyperLeda . Questions: prugniel@obs.univ-lyon1.fr

... Actually, it's not true, since it has optimization for storing small tsvectors (<TOAST_INDEX_TARGET bytes, 512 bytes). ... 130 true bits, 1886 false bits 4 | ... 95 unique words 4 | ... 127 true bits, 1889 false bits 4 | ... 170 true bits, 1846 false bits 4 | ... 121 true bits, 1895 false bits .................................... 4 | ... 61 unique words (417366 rows) -- internal node arxiv=# select * from gist_print('gist_idx_90') as t(level int, valid bool, fts gtsvector) where level =3; level | ...

... We have calculated GHRS target acquisition count rates for the spectra of a subset of the 175 stars contained in the Bruzual-Persson-Gunn-Stryker (BPGS) Library of Stellar Spectra by using calcphot , a task in the synphot package in STSDAS. GHRS target acquisition count rates for objects similar to those in the BPGS catalog can be predicted by following the procedures described here. ... To use Table 7.1 on page 92 to predict target acquisition count rates: . ...

... Астронет | ... планета Астронет | ... update: 22 November 2000 . ... See the discussion by Mazeh et al. (1996) based on 495 RV data. ... Data: . ... From rotational velocity and V x sin i measurements, the inclination is likely to be low (Cochran 1991, Hale 1995) . ... Constraints on the Companion Object to HD114762 . ApJ. ... abstract ). ... ubvy Photometry of stars with planets. ... A search for eclipses of HD 114762 by a low-mass companion . ... On the nature of the companion to HD 114762 . ...

... NED Home . ... Number of Essential Note) RA DEC Type km/s z Qual arcmin Refs Notes Phot Posn Vel/z Assoc Imag 8 30000 1.302000 .. 17 0 7 3 0 0 Retrieve 22 30000 1.469000 .. ... 51 6 14 2 0 0 Retrieve 131 30000 1.238000 .. ... 14 4 6 3 0 0 Retrieve 330 30000 1.760000 .. ... 15 2 6 3 0 0 Retrieve 552 30000 1.779000 .. ... 131 4 27 5 0 1 Retrieve 561 30000 1.500000 PHOT .. ... 143 5 36 5 0 0 Retrieve 572 30000 1.401000 .. ... 15 0 4 1 0 0 Retrieve 650 30000 1.760000 .. ... Back to NED Home ...

... The routine processing of STIS data in the calibration ``pipeline" requires an interrelated set of software tasks and databases developed and maintained by many groups at STScI. We present the systems-level design of this calibration pipeline from the perspective of the STIS instrument group at STScI. We describe the multiple interfaces to the pipeline processes that the STIS group works across in an effort to provide for the routine calibration of STIS data. ... For example, the STIS group: . ...

Modules | Directives | ... Apache HTTP Server Version 2.2 . ... Content cache keyed to URIs . ... mem_cache_module . ... It acts as a support module for mod_cache and provides a memory based storage manager. mod_mem_cache can be configured to operate in two modes: caching open file descriptors or caching objects in heap storage. mod_mem_cache is most useful when used to cache locally generated content or to cache backend server content for mod_proxy configured for ProxyPass (aka reverse proxy ). ...

... Archives . ... Differential Emission Measure [Eqn] . ... Astro 301, class 1, and it took all of 20 minutes of talk about stellar magnitudes to put that notion to permanent rest. ... Now, it turns out that the human eye perceives brightness on a log scale, so magnitudes are numerically similar to log (brightness). ... frac{5}{2}\log_{10}\left(\frac{f_{object}}{f_{standard}}\right) \,,$$ . ... frac{5}{2}\log_{10}\left(\frac{L_{object}}{4 \pi d^2}\frac{1}{f_{standard}}\right) \,.$ ... Chandra Blog . ...

... IRAF View . This is the orientation of the image as viewed in an image display via IRAF (e.g. ximtool, saoimage). Note: This is different from the orientation of the image as viewed on a Macintosh, via Remark . ... A +X, +Y instrument offset will move a star in the direction indicated by the arrows. ... Note: The offset direction depends upon which interface the offset command was issued in! ... Note: This is different from the orientation of the image as viewed by IRAF. ...

The aim of this section of the course is to familiarise you with celestial Coordinates. ... I found some good notes explaining the celestial coordinate system on the web: . ... 1st Dec: 04hr, 00min In addition to the equatorial coordinates described in the notes above, astronomers also use (at least) two other coordinate systes: galactic coordinates and ecliptic coordinates. ... Ecliptic coordinates use the ecliptic (the Earth's path around the sun) as the equator, and are used for solar system work. ...

... Listed below are questions submitted by users of "The Exploration of the Earth's Magnetosphere" and the answers given to them. ... The ones included below are either of the sort that keeps coming up again and again--the danger of solar eruptions, the reversal of the Earth's magnetic field, etc.-- or else the answers make a special point, going into extra details which might interest other users. ... Radiation Belts and Manned Space Flight . ... Capturing the Energy of the Solar Wind . ...

... In this vibrant, eye-opening tour of milestones in the history of our universe, Chris Impey guides us through space and time, leading us from the familiar sights of the night sky to the dazzlingly strange aftermath of the Big Bang. ... Cambridge 2010, ISBN: 978-0521180665, Paperback $28.99 . ... Finding the Big Bang . ... As a prelude the book traces the evolution of some of the notions of modern cosmology from the late Middle Ages up to the final acceptance of the concept of galaxies in 1925. ...

... The remote planet Pluto and its moon Charon orbit the Sun at a mean distance of almost 6,000 million kilometres, or nearly fourty times farther out than the Earth. During a recent investigation by an international group of astronomers [1], the best picture ever of Pluto and Charon [2] was secured with the European Space Agency's Faint Object Camera at the Hubble Space Telescope (HST). ... The new HST image was taken when Charon was near its maximum elongation from Pluto (0.9 arcseconds). ...

... Planetarium Staff . ... Armagh Goes Digital . ... Freedom of Information . ... For more information regarding Armagh Planetarium please contact us using the information listed below. Please note all Digital Theatre shows must be pre-booked by telephone. Visiting Armagh Planetarium . ... A. Please visit our show times page for details of show times. ... Q. When are your telescope nights? ... Q. IтАЩve named a star after a family member, if I come to the Planetarium can you show it to me? ...

... event list with sky image columns xcol / ycol generated by attcalc . data set generated by task iauephem defining the position of the moving object as a function of time. Please note that iauephem does not have to be used to prepare the input but any tools which generates a data set with a single binary table (with any name) and the folling minimal column structure: . column name . ... apparent geocentric Right Ascension . real32 . deg . ... apparent geocentric Declination . ...

This server now also offers Contour plots - before using it please read important notes under general instructions and image type . This postage stamp server for the VLA FIRST Survey returns radio images of the sky in FITS or JPEG format, or as a CONTOUR plot. ... Use 0.0 for contour plots) . ... FITS image" needs browser configured with external viewer . ... FITS Image FITS save to disk Contour Map JPEG Image . ... Any problems with the UK postage-stamp server? segh@mrao.cam.ac.uk ...