For a period of about six days centered on July 19, 1994, fragments of Comet Shoemaker-Levy 9 collided with Jupiter, the solar system's largest planet. ... Scientists and amateur astronomers through the world spent anxious days watching the comet fragments smash into the atmosphere. ... This section offers some background material on Jupiter , comets , and what scientists learned when Shoemaker-Levy 9 collided with Jupiter. Table of Contents Section 1 ...

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• Procedures for Observations
• The relationship between NSs and SNRs (Elba, June 1-4,1998)

... Near Infrared Camera and Multi-Object Spectrometer Instrument Handbook for Cycle 17 > Appendix D: Techniques for Dithering, Background Measurement andMapping > D.1 Introduction . ... Multiple exposures with small offsets in the pointing of the telescope between exposures are recommended for NICMOS observations. ... It is strongly advised that provision for direct measurement of the background be included in proposals whenever observations at wavelengths greater than 1.7?m are performed. ...

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• Supersonic Motions in the Upper Atmosphere of Jupiter Detected at Ly- with GHRS
• Hubble Space Telescope Observations of Globular Clusters in M87 and an Estimate
• Contents

... Primordial theory review : Dick Bond . Defects and the CMB review : Andy Albrecht . ... Gravitational wave contribution to CMB anisotropies : V.B. Lukash and E.V. Mikheeva . C_l from cosmic strings : Lloyd Knox . Some aspects of CMB anisotropies induced from topological defects : Mairi Sakellariadou . ... CMB anisotropies from scaling sources : Ruth Durrer . ... SZ observations I : Sarah Church . ... Holes in the microwave sky? ... Detecting cosmic strings in the CMB : James Robinson . ...

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• Abstract
• Determination of the relative orientation between radio and dynamical reference
• Astrophysics Group VSA

Experiment COLD . ... JSEC Astronomy . ... The entire project was called "Experiment Cold". ... The best radiometer (in terms of fluctuation sensitivity) known to us, based on a parametric amplifier with a closed-cycle helium cooling system, was used in the experiment; measures were taken to "cool" the radio telescope itself; and a method of controlling the numerous sources of interference was carefully thought out. ...

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• EXPERIMENT COLD: THE FIRST DEEP SKY SURVEY WITH THE RATAN-600 RADIO TELESCOPE
• On the problem of high spectral resolution observations of faint objects
• Optimization of spectroscopic observations

Next: NICMOS Coronagraphic Surveys-Preliminary Results Up: No Title Previous: STScI NICMOS Software . NICMOS Coronagraphic Surveys-Preliminary Results . ... Observations with NICMOS . ... The Evolution of Stars seen with ISOCAM - the Need for NICMOS and VLT Follow Up. ... Results . ... The Formation and Evolution of LMC Rich Star Clusters: NGC 1818 . ... HST-NICMOS Observations of Galactic Bulges: Red Nuclei in Nearby Galaxies . ... Investigating the Evolution of Quasar Host Galaxies with NICMOS . ...

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• NICMOS Data Calibration and Analysis
• Some Experiments with the Restoration of NICMOS Camera 2 Images of OMC-1

Next: NOVIDAS and UVPROC II-Data Archive and Reduction System for Nobeyama Millimeter Array . ... The RATAN-600 radio telescope allows us to carry out simultaneous multi-frequency observations using wide-band radiometers. ... Using these features a flexible astronomical data processing system (FADPS), operating on different UNIX platforms, was created. ... FADPS commands may be executed directly in UNIX, in scripts, or using a special shell for our data processing system in the X-Window system. ...

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• Modern CCD Observations of Moving Celestial Objects: Algorithms and Software
• ADASS 2002 Conference Proceedings
• Recreating Einstein Level One Processing Exposure Masks and Background Maps in

Next: Basic Properties Up: R Coronae Borealis Stars Previous: Introduction . RCB stars are named after a star just visible to the naked eye in the constellation of Corona Borealis. RCrB was discovered by Edward Pigott, an English amateur astronomer, who had been observing a star in the `Northern Crown' for over a decade. ... Since 1795, other RCB stars have been discovered and their properties have been carefully observed. ...

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• HISTORICAL BACKGROUND
• First Observation of a Close Earth-Approaching Near-Earth Asteroid Using the
• STFC Introductory Solar System Plasmas Summer School

SAS home . ... EPIC background spectra are normally extracted from regions of the observation field-of-view, once "contamination" due to individual discrete celestial sources has been removed. ... In order to cope with this situation, blank sky event lists can be downloaded from the XMM-Newton Science Operations Center web site. ... It is in principle possible as well to extract background spectra from blank field event lists, if the spectrum accumulation regions are defined in sky coordinates. ...

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• XMM-Newton Further EPIC Background Scripts
• Selection of observations of empty RGS files
• Combination of the selected observations to make the templates and build CCFs

... CentralProcessor 0.11 documentation . BETA Processing Pipelines . ASKAPsoft is the suite of processing software developed by the ASKAP computing team to handle the pipeline processing of ASKAP observations. ... BETA processing uses a slightly different approach, particularly in the calibration method, and the set of scripts detailed here are designed to demonstrate a BETA reduction approach with ASKAPsoft. ... ASKAPsoft processing of BETA data . ... How to run the BETA pipelines . ...

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• Observations from Australasia using the Gravitational Microlensing Technique
• Recording Systems History and Background
• VSOP Observation codes

... Copyrightї1997 Bob Yen (byen@ix.netcom.com) (http://www.comet-track.com/hb/hb.html) . ... Information on Comet Hale-Bopp for the Non-Astronomer Hale-Bopp rotates about twice a day (3/14/97) . ... The Comet Observation Home Page was been selected to receive the Griffith Observatory Star Award for the week of February 2 - 8, 1997 for excellence in promoting astronomy to the public through the World Wide Web. ... Typically, about 1,000 individual users/computers access this page every day. ...

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... Remote Sensing of Tropical Regions . ... INTRODUCTION: SCIENTIFIC RATIONALE FOR TROPICAL STUDIES .. ... 1.1 Tropical Ocean and Global Atmosphere programme .. ... 1.3 Tropical convective systems and their observations.. ... AIRSPACE REMOTE SENSING OF TROPICAL CYCLONES.. ... THE TROPICAL ATMOSPHERE-OCEAN SYSTEM AND REMOTE SENSING .. ... 3.2.2 Precipitation estimated from passive microwave satellite observations 53 . ... 3.2.5 Requirements of satellite missions.. ... TROPICAL SEAS AND REMOTE SENSING.. ...

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• A Brief History of Magnetospheric Physics Before the Spaceflight Era
• Field-aligned potential drops [Oulu]
• Dayside aurora [Oulu]

... The spectrograph SP-124 at the Nasmyth-1 focus of the 6 m telescope with UAGS camera and Photometrix CCD PM1024 ( m pixel size) was used for the observations. ... Gratings with 300 and 600 grooves/mm were used, resulting in a spectral resolution of approximately 12 and 6 ? ... A He-Ne-Ar lamp was used for wavelength calibration. ... April 6.914 . ... The reduction of the original two-dimensional CCD data included the standard steps such as bias and dark subtraction, flat-fielding, cosmic-ray removal...

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• Observations and Reduction
• Introduction
• Prof. Edward L. (Ned) Wright

Nowadays at the Department the experimental and theoretical investigations, including astronomical and ionospheric observations, active experiments with space vehicles are taking place. ... Solar Corona physics and erruptive phenomenae. ... Stellar astronomy. ... The Department has organized and put into practice more then 50 expeditions for observation of Solar ecllipces, aurorae polaris, comets, meteor streams, controlled space experiments, and also for investigations of geophysical characteristics. ...

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• Space Experiment
• Mykola I. Dzubenko
• Vasyl Ivchenko's Homepage!

... Proposing for VLBI Time at Arecibo . ... Documentation (Field System, VLBA4 terminal, Mark 5 system) . ... In 2001, the Arecibo Observatory received its hybrid VLBA-MARK IV (VLBA4) data acquisition system, and currently NAIC commits Arecibo to support VLBI observing up to a maximum of 4% of the 305-m's observing time. ... Tracking Time (h:mm) . ... The inclusion of the 305-m Arecibo radio telescope can dramatically boost the sensitivity of VLBI observations, even with its limited source tracking...

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• Radar Images of asteroid 1998 ML14
• Asteroid 1998 ML14 1998 Aug 14-17
• HISA Poster for the 197th Meeting of the AAS, January, 2001

... In the three intervening decades there have been many observations of this diffuse emission over a wide range of x-ray energies. ... During the 1970's researchers at the University of Wisconsin, lead by Dr. William Kraushaar, used a series of sounding rocket flights to map the diffuse x-ray emission from the sky in several bands. ... University of Wisconsin Sky Survey map of the B-band (0.13-0.188 keV) x-ray intensity. ... University of Wisconsin Sky Survey map of the 2-6 keV band x-ray intensity. ...

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• Spatial Corrections of ROSAT HRI Observations from Wobble-related Aspect
• Filtering ROSAT HRI data on the basis of background level
• The AstroStat Slog X-ray

Creating A Drop Shadow . This is our layer of text. Try clicking on the little eye icon in the background layer. ... When you're finished experimenting, make sure to highlight the text layer again. ... Gaussian Blur (either IIR or RLE is fine). The default value of 5.0 produces a nice, fuzzy blur. Fuzzy layer below the solid one . Offset, and offset the blurred layer 2x and 2y. See how it makes the shadow stand out? ... Our layered, drop-shadowed text . Step 1 | ...

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• APOD: 2000 January 14 - Chandra Resolves the Hard X Ray Background

Twilight observations with MASS/DIMM B. Safonov Sternberg Astronomical Institute Moscow State University Comprehensive Characterization of Astronomical Sites, 2010 B. Safonov (Moscow State University) Twilight observations with MASS/DIMM SITE 2010 1 / 17 Why observe in twilight with MASS/DIMM? ... ASM includes 3 devices sensitive to background: guider, DIMM and MASS. B. Safonov (Moscow State University) Twilight observations with MASS/DIMM SITE 2010 2 / 17 Background in guider. ...

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... Research . Projects . ... The name of the project APEX is a reduction from words " Active Plasma Experiments " . The core of the project are active experiments with injection of electron and (or) plasma beams from a board of the satellite with simultaneous registration of the phenomena, produced by interaction of injected beam with background plasma. ... Active experiments utilise modulated electron beam accelerator and source of modulated xenon plasma beam on the main spacecraft APEX. ...

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... Science Activities > PhD Thesis Topics offered by ESO Faculty Members > Thesis Topic: Foreground emission and Cosmic Microwave background intrinsic anisotropies . ... Since its discovery the Cosmic Microwave Radiation (CMB) has been one of the pillars of modern Cosmology. ... Further development of this work is the application of already tested algorithms to disentangle the foreground emission from the CMB maps and the determination of the CMB intrinsic emission. ... Return to list of thesis topics ...

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• Data Flow System overview
• Astrobiology Lecture - Markus Kissler-Patig
• Introduction

Next: Gravitational Wave Background from Previous: Galactic Gravitational Wave Background . ... It is intuitively clear that at frequencies above the critical ones for our Galaxy, one will detect rare bright jerks produced by coalescing white dwarfs   (at a rate of 1 per 100 year) and NS (at a rate of 1 per - year) in our Galaxy, against a background of the extragalactic stochastic GW. ... Firstly we consider GWB from close individual galaxies, and then will discuss overall extragalactic GWB. ...

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• Contents
• Critical Frequencies and Gravitational Wave Detector Halfwidth for
• No Title