... 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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• Potential Energy

... HST . ... HST Overview . ... Cycle 24 Announcement . ... Post-Observation . ... Because Cycle 6 is short for both the GHRS and FOS, it is STScI's intention to schedule spectroscopic observations early in Cycle 6 to the greatest extent possible so that as many FOS and GHRS programs may be completed as is possible. The Space Telescope Imaging Spectrograph (STIS) will replace most of what the GHRS can do (consult the STIS Mini-Handbook for details). ... Acquiring Faint Objects with the GHRS or FOS . ...

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• Changes Since the Previous Version
• Alternate Method for Predicting Target Acquisition Count Rates
• FOS Webpage

The picture above was made with this demo POV file and this Mirror object POV file . ... This is a magnifying mirror with a light around it, on an articulated arm, designed for wall-mounting. ... Behind this mirror in the image are two more mirrors, one above showing the front, and one below showing the arm in a bent position, and the whole thing roated so that you are effectively looking "up" at it. ... The two images below show details of the base, and the back of the mirror. ...

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• Tom's POVRay Ink Pen
• Tom's POVRay Hand Shower
• Tom's POVRay Water Bottle

IV International Astronomy Olympiad . ... Text of these problems is available also . ... To solve every problem you may use constants and well-known values you know by heart. ... The apparent diameter of the Moon, as seen from the Earth, is 31'. ... Can you observe a star with magnitude . ... Consider the stars as black bodies. ... Estimate the diameter of a black hole constructed using this patent from a ship with the mass of 5000 tn (1 tn = 1000 kg). ... What stars would you observe this nigth? ...

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• Problems of the 1-st International Astronomy Olympiad

... December 21, 1997 . ... Advantages are briefly discussed of gaining in spectral resolution, which is accompanied by losses in signal level, as compared with the attempts to improve the accuracy of measurement of line parameters by means of rising the S/N ratio alone with increasing the exposure time. To partially solve the problem of observations of faint objects at the BTA a new design echelle spectrometer is proposed. high resolution spectroscopy . ...

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• Introduction
• Search for distant radio galaxies in SAO
• Radio sources identfification

... CURRENT ASPECTS OF REMOTE SENSING OF EARTH FROM SPACE . ... For developing of the scientific concept and the programs of global monitoring of the Earth from space and pursuant to the disposal of Presidium of Russian Academy of Sciences # 10310-717 (August 11, 2004 ) Space Research Institute RAS and Center of Space Observations of the Russian Space Agency during November 16-18, 2004 conduct the Second Opened All-Russia conference ' Current Aspects of Remote ...

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• Information systems for monitoring the environment and antropogenic objects

Next: Second priority candidates Up: First priority candidates Previous: Stellar objects . Twenty five non emission-line objects are hard to classify at all. ... Figure: Colour distribution for the random sample of 42 second priority candidates in the strip =35-40 (HS 1423+3945 is not included because its APM-colour is not available). ... BCG/H II -galaxies are marked by an additional cross. 4 of 5 APM stellar-type emission-line objects are either QSOs or distant luminous galaxies. ...

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• Stellar objects
• The Tooltips Object
• HyperLEDA Internal documentation

... 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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• ADASS 2002 Conference Proceedings
• Imaging by an Optimizing Method
• System Interfaces to the STIS Calibration Pipeline

... ESO, the European Southern Observatory . ... Travel and Contacts . Travel to ESO Headquarters . ... Travel to Paranal . ... ESO Acronyms . ... VLT/Paranal . ... Survey Telescopes . ... VLT Unit Telescopes Names . ... ESO 3.6-metre telescope . ... MPG/ESO 2.2-metre telescope . ... The VISTA mirror . ... The great size of the M1 Cell and the special baseplate for support during transatlantic transport causes some problems with the road signs at Paranal. ... Mirror, Paranal , Very Large Telescope . ...

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• The problem of expanding a mirror to greater size | ESO
• The problem of making rigid telescope mirrors | ESO
• Second 8.2-m VLT Mirror and its Cell Arrive at Paranal | ESO Ireland

... For the past years I have been working on the problem of synthesis of light curves of close binary systems, consisting of a normal star and a compact object (point object with fixed X-ray luminosity). ... Possible existence of a bright spot on the disk's lateral surface is taken into account. ... The last of then will be published in Gordon and Breach Publishers ( Cherepashchuk A.M., Katysheva N.A., Khruzina T.S., Shugarov S.Yu. ... Cherepashchuk A.M., Katysheva N.A., Khruzina T.S., Shugarov S.Yu. ...

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... Radiation mechanisms of astrophysical objects: classics today . ... Studies of radiation mechanisms and processes of spectra formation in astrophysical objects are among the fundamental tasks of modern astrophysics. ... On this occasion the Saint-Petersburg State University organizes an international conference Radiation mechanisms of astrophysical objects: classics today , which will be held in St. Petersburg from September, 21 to September, 25, 2015. ... Scientific rationale . ... Conference venue...