... 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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• Astronomy HyperText Book: Stellar Evolution

Automatic Detection of NEOs in CCD Frames . ... CCD frames obtained with modern telescopes with robotic operation allow carrying out standard observation programs for detection of peculiar objects on stellar backgrounds, as is the case of Near Earth Objects (NEOs). ... In this paper, we present original algorithms for automatically detecting dim NEO images in telescope frames, considering both sidereal and differential tracking [2]. ...

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• AE (appendix)
• (Untitled)

... Science . ... Science Users Information > Observing with ESO Telescopes > Observing Tools and Services > Standard Stars Catalogues > Standard Star Catalogue Search Tool . ... Publications with ESO Data . ... ESO Data . ... This tool searches the standard star catalogues for standards that are within dX airmasses of the target at a given LST. ... In this case put the LST when the target was observed in the TargetLST box as before, and put the LST of the standard star observation in the StdObs LST box...

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• ESO - Standard Stars Catalogues
• Aleksandar Cikota
• ESO - My flux-calibrated data do not agree with independent photometric

... An OBJECT column gives the name of the object observed (usually a star name). ... In critical cases, it is common practice to measure sky on two or more positions around a target object, and these positions must be identified. ... A general treatment of this problem requires a column called OBJECT, bearing the usual name of the object (as in the star tables); a column labelled STARSKY, to distinguish between star+sky, star alone, or sky alone; and additional columns to identify the sky position. ...

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• Standard values
• Moving objects
• Object name

... Standard Commands . ... TwistedActor.Actor is core code for writing an actor: an instrument control computer (ICC) or hub-based script that does something useful. This manual describes the standard commands and keywords that any actor based on TwistedActor.Actor will support. All actors based on TwistedActor typically support the following standard commands (plus additional device-specific commands documented in that actor's manual). ... Connect one or more devices (if not already connected). ...

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• TclActor
• Astrophysical Research Consortium - Apache Point Observatory
• MILT Description

... Reference Data for Calibration and Tools . ... There are two independent directories which contain the spectra of ultraviolet and optical standard stars. The CALSPEC directory contains the composite ultraviolet and optical absolute calibrated reference spectra of the HST standards. ... Details of the CALSPEC data, along with another supplemental CALSPEC directory, are contained in the above web page. ... Another directory of supplemental calspec data is available and detailed on the calspec page. ...

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• Fluxes and Standard Magnitudes
• Near Infrared Camera and Multi-Object Spectrometer Instrument Handbook for
• GOODS: The Great Observatories Origins Deep Survey

. Go to RUSSIAN (KOI-8) . Quantum efficiency (%) of LSS shown as function of wavelength . (telescope+spectrograph+CCD camera): . The observation with wide slit (slit width = 8 arcsec) of the spectrophotometrical standards (G191B2B and HD217086) were used to measure efficiency of LSS. Back to LSS main page . Back to Laboratory Home Page .

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• Principles of organization
• Laboratory of spectroscopy and photometry of extragalactic objects :MOUSER
• On the problem of high spectral resolution observations of faint objects

T he Siding Spring Survey (SSS) is a Near-Earth Object search program that utilises the 0.5-m Uppsala Schmidt Telescope at Siding Spring Observatory, N.S.W., Australia. ... The mission of the Siding Spring Survey is to contribute to the inventory of near-earth objects (NEOs), or more specifically, the potentially hazardous asteroids (PHAs) and comets (PHOs) that may pose a threat of impact and thus harm to civilization. ... Based on the CSS Mission page . ... Siding Spring Survey Main Page . ...

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• Designated Observatory Application

Chandra X-Ray Observatory CXC 1E0102.2-7219 as a Standard Candle for X-ray Astronomy Paul Plucinsky, Joseph DePasquale, Steven Snowden Paul Plucinsky 1 ICWG June 2006 Chandra X-Ray Observatory CXC Why Use E0102 as a Calibration Source for X-ray Astronomy? ... Paul Plucinsky 2 ICWG June 2006 Chandra X-Ray Observatory Gratuitous Pretty Pictures of E0102 S3 Summed Data ~100 ks True Color Image CXC Paul Plucinsky 3 ICWG June 2006 Chandra X-Ray Observatory Spectral Model: Calibration vs. ...

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• XMM-Newton SAS: Watchout Page
• Description

Download Izmccd (~2.7 MB). ... for 1-5 bytes is number of a numbered minor planet, . ... Positions 1-80 file "mpcreportiz.txt" are similar to positions of file "mpcreport.txt". 83-95 – errors of unit weight, . ... If this tag is " 1 0 " , this record contains results of measurements of an image of object (approximation by "PSF"),  . ... 57-66 – error in X (pixels), for first star in a multicentric image, for subsequent it is error in (distance between first star in the image and this), . ...

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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
• Pulkovo Observatory
• Pulkovo NEO Page: Estimation of Accuracy of the Observations

... Equinox of object coordinates BJ = 18.87 / bJ magnitude UMBJ = -0.69 / u - bJ colour BJMR = 0.22 / bJ - r colour NOBS = 1 / Number of 2dF observations available IS_ BEST = 'TRUE ' / TRUE if this file contains the best 2dF observa DATEBEST= '24/09/00' / Date of best 2dF observation (DD/MM/YY) ID_ BEST = 'QSO ' / ID from best 2dF observation QUALBEST= 11 / Data quality flag from best 2dF observation Z_ ...

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... 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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• The Faint Object Spectrograph Post-COSTAR Spectropolarimetry Correction
• Access to Data Sources and the ESO SkyCat Tool
• ADASS 2003 Conference Proceedings

... 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 . ...

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• The AstroStat Slog CLT
• The AstroStat Slog Blog Archive On the history and use of some standard
• Period Determination

Other groups working on a similar program: . DANEOPS , the DLR-Archenhold Near Earth Objects Precovery Survey . Andrea Boattini - IASF-CNR . Giuseppe Forti - Arcetri Astrophysical Observatory . ... Maura Tombelli - Montelupo Observatory (code 108) . ... The PHA 2000 LY27 was located on June 14, 2000 on a Siding Spring photographic plate copy available at Arcetri Observatory. ... The location of 2000 BF19 on a POSS-2 plate marks the beginning of regular access to the Arcetri Plate Library. ...

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• Accretion disks in luminous young stellar objects
• Previous
• Kuiper Belt Objects

The AstroGuide . ... AstroGuide | ... AstroGuide Listing . ... See many more Astronomy Listings by: Category or Alphabet . LONEOS is a system designed to find Earth-crossing asteroids (ECAs) and comets (ECCs), collectively known as near-Earth objects (NEOs). ... Listed Since July 15, 1998 . ... Web Site . http://www.lowell.edu/users/elgb/loneos_disc.html . ... Web . www.astronomy.net . About Astronomy Net | ... dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

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• ?seeing Southern Deepsky Objects In USA - an Astronomy Net Observation_reports
• Astronomy Terms - To Help You Study The Universe - an Astronomy Net Article

... Click on an object in the solar system or choose from the list at left to learn more . The Arecibo Observatory planetary radar is the world's most powerful instrument for post-discovery characterization and orbital refinement of near-Earth objects. ... The Solar System Studies group is a department of the Arecibo Observatory, which is an NSF facility operated under cooperative agreement by SRI International, Universities Space Research Association (USRA), and la Universidad Metropolitana (UMET). ...

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• THE SOURCE LIST
• The Telescope Optics and Pointing
• National Astronomy and Ionosphere Center (Arecibo Observatory)

... SAI CAS . ... Catalog Access Services . ... This site is about the Virtual Observatory project at the Sternberg Astronomical Institute, Moscow University ( SAI MSU ). We provide a public access to the growing set of astronomical services developed by the SAI RVO development team in accordance with the Virtual Observatory standards. ... We provide access (programmatic and interactive) to the all major and biggest astronomical catalogs (about 4 billions objects total) as well as other web-services. ...

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• people:sergeykarpov:paper-arxiv-2007-adass [SAI Virtual Observatory - Wiki]
• SAI Virtual Observatory Project - About
• volinks [SAI Virtual Observatory - Wiki]

Subject, Object and Problems of Astrophysics. Practical and Theoretical Astrophysics. ... Visual Telescope; Problems Which Are Solved with the Its Help. ... Resolution of Telescopes. ... Effectiveness of Telescope in Respect of Resolution. ... Optical Power of Telescopes for Star-like and Extensive Objects. Boundary Magnitude. Reasons of Light Dissipation in Telescopes. ... Spectral Instruments in Astrophysics. ... Basic Photometrical Ideas, Magnitudes and Their Measurement. ...

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• A computer controlled low light photometer for nightglow observations