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• NASA Oral History Project

. " The Arecibo Observatory is sponsored by the National Science Foundation. Any opinions, findings and conclusions or recommendations . expressed in this publication are those of the author(s) and do not necessarily reflect the views of the National Science Foundation."

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• Research Associate/Senior Research Associate in Radio Astronomy

... Bad Astronomy . ... Bitesize Astronomy . ... Last week's Snack talked about how black holes can affect the environment around them in such a way as to be very bright . ... It's a common misconception that black holes always have matter swirling into them. ... As this matter gets closer and closer to the black hole it piles up and a large, fairly flat disk forms. This is called the accretion disk , because matter from this disk accretes (that is, falls in) on the black hole. ... 2008 Phil Plait. ...

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... select cursor and ellipse . ... The three mouse buttons have been redefined as: . ... i.e. , the axial ratio and orientation of the ellipse are fixed, only adding (or removing) ellipses of different area is possible. obtain different annuli by placing the mouse at some distance from the ellipse and clicking on the MIDDLE button to produce equally spaced, concentric ellipses towards the mouse position. ... Note: &! means ``and not''; i.e., an elliptical annulus rather than a solid ellipse. ...

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• Select a circle around the central point source
• A box, to include extended emission
• QPOE Files

... Observing . ... Solar Observing . ... April 3 (SUN) - Solar Observing, Central Park , Manhattan . ... APRIL'S SKY . ... Lecture Series at the American Museum of Natural History The Amateur Astronomers Association is proud to present an astronomy lecture series from October through May each year for our members and the .. ... The€аAmateur Astronomers Association of New York€аwas organized in 1927 to promote the study of Astronomy, emphasizing its cultural and inspirational value. ...

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• Franklin Lincoln Center 3 copy 2 ? Amateur Astronomers Association of New York
• Lincoln Center ? Amateur Astronomers Association of New York
• lincoln center ? Amateur Astronomers Association of New York

... March 15, 1997 . The Milky Way's Center . Credit: DIRBE , COBE , NASA . ... This was shown in dramatic fashion by the COsmic Background Explorer (COBE) satellite which produced this premier view of the central region of our own Milky Way Galaxy in infrared light in1990. ... The DIRBE module used equipment cooled by a tub of liquid helium to detect the infrared light which, composed of wavelengths longer than red light , is invisible to the human eye . ... About APOD > . ...

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• APOD: 2007 July 31 - A Laser Strike at the Galactic Center
• APOD: 2013 December 1 - A Laser Strike at the Galactic Center
• APOD: 2010 September 6 - A Laser Strike at the Galactic Center

... НЕПРЕРЫВНОГО МАТЕМАТИЧЕСКОГО ОБРАЗОВАНИЯ . ... Кружок ?Олимпиады и математика? ... Московская математическая олимпиада . Заочный математический конкурс . ... Устные математические олимпиады . Олимпиады по программированию . Математический праздник . Математические регаты . ... Математические бои . Олимпиада по геометрии им. И.Ф.Шарыгина . ... Программа ?Math in Moscow? Научные конкурсы . Творческий конкурс . ... График олимпиад . ... XXVII Математический праздник . ...

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• Moscow Center for Continuous Mathematical Education - Independent University of
• Center for Linguistic Documentation

... MWC 922: The Red Square Nebula . ... The hot star system known as MWC 922, however, appears to be imbedded in a nebula with just such a shape. ... M3: Inconstant Star Cluster . ... Star clusters appear constant because photographs of them are frozen in time. ... Venus by the Lake . ... Hurtling through a cosmic dust cloud a mere 400 light-years away, the lovely Pleiades or Seven Sisters star cluster is well-known in astronomical images for its striking blue reflection nebulae. ... Saturn from Below ...

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I will present theresults from a deep, extended, planetary nebulae survey in a 0.5 sqdeg region centered on the brightest cluster galaxy NGC 4486 (M87) in the Virgo cluster core, carried out with SuprimeCam@Subaru and FLAMES-GIRAFFE@VLT. ... A substructure detected in the projected phase-space of the line-of-sight velocity vs. major axis distance for the M87 halo planetary nebulae provides evidence for the recent accretion event of a satellite galaxy with luminosity twice that of M33. ...

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• http://www.mso.anu.edu.au/~bessell/FTP/Workshop/applic/readme_Aperplates
• Siding Spring Survey Follow-up Obs
• Gemini NIFS May 2002 First Cool Down.

... Институт прикладной математики им. М.В.Келдыша . БАЛЛИСТИЧЕСКИЙ ЦЕНТР . О Центре . ... Баллистический Центр Института прикладной математики им. М.В.Келдыша РАН . Баллистический центр (БЦ) ИПМ им. М.В. Келдыша создан по предложению С.П. Королева и М.В. Келдыша в 1965 году. На него были возложены работы по баллистико-навигационному обеспечению (БНО) управления полетом пилотируемых кораблей и автоматических космических аппаратов научного и народно-хозяйственного назначения. ...

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Here user should specify the origin of coordinate system (observer's position). In case of rectangular coordinates it can be center of any major planet or the Sun or any minor planet. ... For spherical coordinates the origin of coordinate system can coincide only with the center of the Earth or with any point on the Earth surface. ... a)by code of observatory in the list of observatories maintained by Minor Planet Center (see IX. Observatories ). b)by introducing name of observatory. ...

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• IAA GPS Analysis Center
• Conference ACH-2009 | First announcement
• Laboratory of minor bodies of Solar system

... A lightweight stick with two balls of equal weight at its end obviously has its CG in the middle. When one ball is twice the weight of the other, the CG divides the distance between them by a ratio 1:2, in a way that makes it closer to the heavier mass ( see figure ). ... Even though the balls are separate, one can speak of their common center of gravity, on the line connecting their centers, 1/3 of the distance from the center of the heavier ball. ...

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• A Brief History of Magnetospheric Physics Before the Spaceflight Era
• Discovery of the Solar System
• Comet Shoemaker-Levy 9

Next: Imaging - INVERT Up: Primary Beams and Mosaicing Previous: Summary of Imaging Strategies . For the joint approach, the reduction proceeds in a fashion which appears very similar to conventional observations. First a dirty image is formed (with associated point-spread function), and then a deconvolution algorithm is used to `clean' this dirty image. ... Imaging - INVERT . ... Next: Imaging - INVERT Up: Primary Beams and Mosaicing Previous: Summary of Imaging Strategies Miriad manager . ...

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• The ``HIPASS Bright Galaxy Catalog'' (version-4)
• casacore: images/Regions/WCConcatenation.h Source File
• PmWiki | PmWiki / Tables

... January 21, 1997 . Journey to the Center of the Galaxy . ... What wonders lie at the center of our Galaxy ? Astronomers now know of some of the bizarre objects which exist there, like vast dust clouds , bright young stars , swirling rings of gas , and possibly even a large black hole . ... The center itself appears as a bright spot near the middle of the roughly 1x3 degree field of view, the plane of the Galaxy is vertical, and the north galactic pole is towards the right. ... About APOD > . ...

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• APOD: June 21, 1999 - The Galactic Center in Infrared
• IBIS - Gallery
• APOD: May 24, 1996 - In the Center of 30 Doradus

... Chapter 4: Solar System Targets > 4.2 Target Identification . ... The following information is required to identify and classify each target. ... For example, separate targets should be defined if you plan to take spectra of several different surface features on a planet, or if you plan to observe the same feature with different timing constraints. ... Description . PLANET . If the target is the center of a planet, enter PLANET followed by its name (e.g., PLANET JUPITER , PLANET SATURN ). ...

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• The Hubble Deep Field - drizzling
• Mode = ACQ/PEAKDConfig = COS/FUV
• Mode = ACQ/PEAKDConfig = COS/NUV

2009-05-20 O.Hainaut There are many steps between the data coming out of a camera on a professional telescope and the final image that appears in magazines or on our web sites. ... preliminary: from the telescope to Photoshop. cleaning: remove the artifacts remaining in the image . ... In each filter, several images are acquired. ... Fig 1: a raw image (click for full scale) . ... At this stage, the images are still in FITS, the astronomical format, with one FITS file per filter. ... The final image. ...

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• ESO - The reduced science spectrum displayed in the Reflex window appears good
• Marina Rejkuba's Web Site
• THE DEEP X-RAY RADIO BLAZAR SURVEY (DXRBS) I. Methods and First Results

... Gift Center . ... Why do aurorae appear strongest within rings centered on Earth's poles instead of filled-in circles? ... RELATED TOPICS: AURORAE . The visible aurorae result from electrons that move along magnetic field lines from space into the upper atmosphere. ... Just make sure you're registered with the website. Get instant access to subscriber content on Astronomy.com! ... If you are already registered on Astronomy.com, please log in below. ...

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• Why do some stars appear to flash a variety of different colors when you look
• Gravitational constant appears universally constant, pulsar study suggests |

TUI supports the following offsets: . Object Arc offset by a given amount on the sky (i.e. along the arc of a great circle). ... Arc offsets are useful for moving a different portion of your object or a different nearby object onto the boresight . ... Object Arc XY this is identical to an Object offset except that it has been rotated to align along the instrument x-y axes. ... This is just like the Calibration XY offset, except that it is typically cleared when you slew to a new object. ...

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• Astrophysical Research Consortium - Apache Point Observatory
• TUI:Introduction
• Procedure to Collimate the SDSS 2.5m Secondary Mirror

... The DIV element is used with the CLASS attribute to represent different kinds of containers, e.g. chapter, section, abstract, or appendix. ... An SGML identifier used as the target for hypertext links or for naming particular elements in associated style sheets. ... By convention, the class names are interpreted hierarchically, with the most general class on the left and the most specific on the right, where classes are separated by a period. ... ALIGN . ... move down until left margin is clear . ...

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• Figures
• Table Rows
• Headings