... 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 . ...

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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 . ...

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... The 209 candidates were selected from our first and second priority samples introduced in Paper IV. Of 169 first priority candidates, 141 objects appeared in our list as new ones. 28 objects were listed in the NED as galaxies or objects from various catalogs with known redshifts and some of them already had information on emission lines in earlier publications. ... The ``random selected sample'' was created to access the fraction of BCGs in the second priority list and contains 43 objects. ...

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• The main observational parameters
• Introduction
• Group IAG

... 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. ...

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• Modeling Scattered Light in the HST Faint Object Spectrograph
• Refining the Guide Star Catalog: Plate Evaluations
• ETCs and Observations Simulation at the VLT

... LABORATORY OF RADIO ASTRONOMICAL OBSERVATIONS . Radio sources identification is one of the most important tasks of the current radio astrophysics. ... Optical idetification. ... Optical identifications of subsample of steep spectra radio sources from RC catalog using 6m SAO telescope of SAO RAS: optical observations. ... Astronomy Reports. ... Identification of radio sources with data of various radio catalogs allows one to construct continual spectrum of the object and its radio structure. ...

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• On the problem of high spectral resolution observations of faint objects
• Search for distant radio galaxies in SAO
• Multipupil Field Spectrograph

... The object just above trap 2-637 in Figure 5 is a good example of how traps can affect the observations of point sources. ... In the case of the object above trap 2-637, the photometric magnitude measured within a 6-pixel aperture (i.e., radius = 3 pixels) is about 0.1 mag fainter than it should be, due to the tail taking light out of the aperture. The FWHM is increased from 1.5 pixels to 2.2 pixels. ... Another relevant question is what percentage of objects are affected by charge transfer traps. ...

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• GOODS/HST Transient Search Results
• Ice Chemistry in Embedded Young Stellar Objects in the Large Magellanic Cloud
• Optical Ground--based Images of BL Lac Objects Scheduled for HST Observations

... S.P. KOROLEV ROCKET AND SPACE CORPORATION ENERGIA . ... OAO RSC "Energia" . ... Company's History . ... History . Brief History of Rocket and Space Technology . ... Flights Chronology . ... Project History . ISS Russian Segment . Steps of ISS Assembly . Spaceflights Chronology . Chronology of Extravehicular Activity . ISS 45/46 . ... Rocket Space Complexes . ... Launches Chronology . ... Automatic Space Systems . ... HISTORY . ... 2015 JSC "S.P. Korolev RSC "Energia" . ...

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... Contacts . 2012: . ... We refined the fundamental parameters of the components, the orbital periods, and the conditions of photospheric heating of the secondary component by the ultraviolet radiation of the hot component. ... The observations of the star clusters associated with ultra-luminous x-ray sources (ULXs) in four galaxies on the 6-meter and VLT telescopes have shown that all the ULXs are located within 200pc of very young star clusters (younger than 5 million years). ... Archive . ...

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• RCJ0311+0507
• Solar activity
• Discovery of enrichment of the envelopes of post-AGB stars with heavy metals

Detected Supernovae . The search have produced till now the detections of 4 SNe. ... This result highlights the power of infrared monitoring in detecting Obscured SNe and indicates that optical surveys are probably missing a significant fraction of SNe, especially in obscured systems such as starburst galaxies. ... In Fig. we show the archival SOFI image of NGC3256 (left) and the first image obtained in 2001 (right) where SN2001db has been detected. ...

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• Hubble Observations Shed New Light on Jupiter Collision
• A SN at z~0.95 in the HDF
• BD_disks (Abstract)

... NED Home . ... Redshift: Between 0.150000 and 0.270000 . Include ALL Object Type: QSO Radio . ... Number of Essential Note) RA DEC Type km/s z Qual arcmin Refs Notes Phot Posn Vel/z Assoc Images 1 30000 0.228000 0.0 26 0 8 3 0 0 Retrieve 2 30000 0.181000 0.0 5 0 4 1 0 0 Retrieve 3 30000 0.171000 0.0 67 1 1 0 0 0 Retrieve 4 30000 0.260000 0.0 90 1 16 5 0 0 Retrieve 5 30000 0.163009 0.0 170 10 5 4 3 0 Retrieve 6 30000 0.245000 0.0 27 1 1 2 1 0 Retrieve 7 30000 ...

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• Solar System Studies at AO
• The SMUDGES Survey
• Arecibo Galaxy Environment Survey (AGES)

... Our main scientific objectives are to: 1. study inverse Compton emission, thought to be the dominant X­ ray component in this BL Lac subclass, which is 1 A#liated to the Astrophysics Division, Space Science Department, European Space Agency 2 On leave from Dipartimento di Fisica, II Universit‘a di Roma, Italy 1 characterized by a peak in the multifrequency spectra in the IR/Optical band ; 2. compare the BeppoSAX spectra with the far­ to near­infrared (1 -- 200µ) ...

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• HAWK-I Exposure Time Calculator
• Olivier Hainaut
• The Browne & March? Effect

Next: Imaging Polarimetry with NICMOS Up: NICMOS Data Calibration and Previous: The Photometric Performance of . ... NICMOSlook and Calnic C . ... Extracting spectra from a large number of NICMOS grism images requires a convenient interactive tool which allows a user to manipulate direct/grism image pairs. ... NICMOSlook and Calnic-C are two programs that were designed to take advantage of the fact that the NICMOS grism mode typically consists of taking both a direct and a grism image. ...

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• NICMOS Science
• The Structure and Composition of High Redshift Radio Galaxies
• A Coronagraphic Search for Substellar Companions to Young Stars

Peremennye Zvezdy ( Variable Stars ) 32 , No. ... We report on a new episode of decretion disk formation in the IGR J06074+2205 system. ... From a study of three HeI lines, the rotational velocity of the star was determined as km/s. After five years of spectroscopic monitoring of IGR J06074+2205 (Reig et al. 2010), a reversion from emission to absorption of the H line and hence disappearance of the equatorial disk was reported. ... Reig P., 2011, Astrophys.& ...

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• Астронет > Микролинзирование
• XWare > APOD

An astronomer by training, I currently work at the Australia Telescope National Facility , part of the CSIRO . I am part of the computing group for the Australian Square Kilometre Array Pathfinder (ASKAP), where my job is to develop science analysis software for the ASKAP processing pipeline. The huge volumes of data that ASKAP will produce mean that all observations will be processed automatically in pipelines. ... Matthew Whiting . ... Australia . ... Matthew.Whiting <at> csiro.au . ...

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• The 2dF BL Lac Survey II
• casacore: casa::LELCoordinates Class Reference
• ATNF Colloquium

PROJECT SUMMARY (max 3000 characters) The principal goals of the project are the observational and theoretical investigation of complex cosmic objects where the processes of dust scattering, absorption and emission play significant roles. ... Development of light scattering theory and computer codes to calculate the optical properties of non-spherical inhomogeneous particles and laboratory measurements of light scattering characteristics of irregularly shaped particles. ...

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• Scientific rationale | Radiation mechanisms of astrophysical objects: classics
• ADS Abstract Service Results
• Radiation mechanisms of astrophysical objects: classics today | Механизмы

... For each observed position the table contains designation of object as in file of observations, the time of observation, the number and name/ preliminary designation of minor planet supposedly identical with observed object, the values of O – C (observed position minus computed one) in right ascension and declination expressed in arcsec, the difference O – C between observed magnitude and computed one, the code of observatory in the Observatory list (see Observatories section). ...

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• LAB Ephem. Astronomy-ERA

Pulkovo NEO Page . ... EPOS Software Package . ... EPOS ( E phemeris P rogram for O bjects of the S olar system) is the Windows PC application for study and ephemeris support of observations of the Solar system objects. ... It controls the part of common data and transfers the control to one of the programs that solve the restricted set of tasks. ... So with the EPOS software package one can calculate the accurate ephemerides for many objects and get the quick illustration of their motion as well. ...

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• Pulkovo NEO Page: Observations
• RADIOSUN Workshop 2014
• Pulkovo NEO Page: Estimation of Accuracy of the Observations

... Since the reddening found for the stars in Table 13 was small, no reddening correction was attempted. ... These diamonds indicate the positions of very low mass, 3 Myr old, objects from the work of Burrows et al. ... This optical V versus R - I scheme is a very powerful method of detecting very low mass (VLM) objects. ... Because of this, young brown dwarfs are intrinsically no more difficult to observe in the optical than low mass stars at the age of Orionis. ...

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• Cool Stars 10 - J.U. Drake and V. Kashyap: Coronal Metallicity of HR 1099
• The AstroStat Slog Blog Archive [ArXiv] A fast Bayesian object detection
• Watching the Stars go `Round and `Round

After a couple of visits by Steve Larson and Ed Beshore in late 2003 and early March 2004 to deal with various hardware issues and to install the new survey code, regular surveying commenced in mid-March 2004. ... However, the initial results are most satisfying and new objects have been found from the very first night. ... UA Media Release . ... Fellow Uppsala observer Rob McNaught was observing NEOs with the 1.0-m at Siding Spring as part of our regular program of follow-up observations. ...

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• Siding Spring Survey
• The High-Z SN Search Description
• Marc White - Astrophysicist - The Australian National University

... Indeed, one alteration of orbits can be the outright ejection of a planet. When several big planets are orbiting a star under each other's influence, the system is inherently unstable. ... We know of no good reason why the smallest objects with fusion should have the same mass as the smallest objects that can form by themselves. ... 6) Mission Definition . ... I don't think this mission is impossible, and will suggest a definition in a future article in Mercury. ... Good luck! . ...

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• ASP: The New and Improved Hubble Space Telescope
• ASP: Light Pollution
• ASP: More About Deep Space Objects and Cosmic Terms