... 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 Blog Archive Significance of 5 counts
• The AstroStat Slog Blog Archive Eddington versus Malmquist
• The AstroStat Slog Blog Archive different views

The aim of this section of the course is to enable you to use simple computer programs to solve a variety of common astronomical tasks. ... I have (somewhat arbitrarily) decided to use Python for this course, because it seems to be gaining popularity fast for astronomical data handling, and because some of you will have encountered it at the ATNF course. ... We've put Python (plus all relevant libraries) on the Stromlo Linux computers moron and maggot. ... Now log in to moron (or maggot). ...

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• Observational Techniques: Assignment 1
• ASTR1002 Assignment 1

The original files with the data were in different formats. ... Such files were named "standard data files" and linked to the database. They can be easily transformed to any desirable format by a code. Here we present two simple computer programs of this kind. ... When running the code, you can specify columns in the output file: wavelength, energy (eV) or wavenumber (cm -1 ) as the first column, and complex refractive index or dielectric function as the second and third columns. ...

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• AI SPbU library of scattering codes
• Textbook on Computer technology for pupils

... Computing the area lost to bright pixels declared on-board is another matter. It depends on energy, through the bright pixel level. If the telescope's attitude were to vary significantly (more than the PSF) with time, then it should be considered using X,Y (attitude corrected) as coordinates for CCDBKG, since the optical background from stars would follow the attitude variations. ... The subroutines CTI_CORR and ENERGY only call the CAL routines CAL_mosCTIcorrection and CAL_gainCorrection. ...

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• General Comments
• Comments on Individual Table Columns

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium is leading the way in the digital theatre world with the installation of our brand new Digistar 4 Theatre System .€а This marks the first installation of the worldтАЩs most advanced star theatre system in the UK, enabling audiences to see the Cosmos like never before. ... Armagh Planetarium was the first in the world to use video projectors to show moving images on the dome. ... тАЬDigistar 4 Planetarium Projection System in Action | ...

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• Carnival of Space No 179: Space blogs you can't afford to miss! | Astronotes
• Amazing multi-spectral view of Andromeda Galaxy | Astronotes
• - Part 38

Comment on J0513-2159 . Our image shows an extension to about 5 mas SE from the brightest feature. The EVN 8 GHz image by Dallacasa et al. (1998), with about five times larger resolution, shows an extension from the brightest feature roughly opposite to our direction. As noted by Dallacasa et al. (1998), the structure detected has a highly inverted spectrum, which, together with the reported variability in the source, could explain the structural disagreement. ...

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... May 17, 1999 . How to Search for Aliens . Credit: SETI@home , UC Berkeley SETI Team . Explanation: "Mom, can I use our computer to search for aliens?" Last week, the SETI@home project released free software that enables many home computers to search for signals from intelligent extra-terrestrials . ... The resulting software can work as a screensaver and so after down load ing a chunk of data, will only search for alien signals when the computer is otherwise idle. ... About APOD > . ...

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• APOD: 2007 February 27 - Atmospheres Detected on Two Extrasolar Planets
• APOD: 2001 November 28 - Extra Solar Planetary Atmosphere Detected
• APOD: 2008 August 11 - Black Hole Candidate Cygnus X-1

Computer Ephemeris . ... Content of the Computer Ephemeris is the same as content of Soviet Astronomical Almanac (Ezhegodnik), but fully original algorithms and computer methods of calculations were used. Your requests for Computer Ephemeris for years before 2014 and your comments on its contents please direct to the author charlie@mail.univ.kiev.ua . ... Keywords: Computer Ephemerides, Computer Ephemeris, Computer Almanac, Computer Calendar. ...

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• A computer controlled low light photometer for nightglow observations
• Reduction quantities for Sidereal time. Explanations for Computer Ephemeris.
• Second order reduction quantities. Explanations for Computer Ephemeris.

... Search . ATNF Home . About ATNF . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Parkes radio telescope . ... Parkes | ... A Search for Bright Kuiper Belt Objects . ... Since 1992, 60 large Kuiper belt objects have been detected by ground-based telescopes. ... The detection of brighter objects would improve our ability to determine the Kuiper belt objects' surface composition and provide constraints on the population statistics of different formation mechanisms. ...

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• Some Comments on Dark Matter
• Final Comments
• Undefined Values (BLANKs)

In this gallery are many images of Low Surface Brightness Galaxies which have recently been discovered and analyzed. ... The central surface brightness of this galaxy is 24.28 . Malin 2 This galaxy is another huge disk galaxy with a scale length of 15 kpc and a redshift of 15000 km/a. The high surface brightness knot in one of its spiral arms actually has the same color, luminosity and H-alpha equivalent width as the entire Large Magellanic Cloud . ... Truly it is a Low Surface Brightness Galaxy. ...

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• LSB wALES cONFERENCE fOLLOW-pu
• Galaxy Gallery Page IV: The Movies
• Astronomy 123 Spring 1996

... Science . ... Science Users Information Paranal Science Operations Visitor Information jump to navigation jump to content . Paranal Facilities . ... Offered Instruments . ... Paranal News . ... Paranal Telescopes Overview . Telescopes and Instruments . ... Overview . ... Manuals . ... Instrument Operation Team . ... Paranal Science Operations . ... Please submit one report per observing run or telescope/instrument combination. ... About ESO in general: . ... Telescope/Instrument Manuals: . ...

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• High Resolution HST Images of Pluto and Charon (ESO Press Release 09/94)
• ESO Web file formats and associated viewers
• Diameters

... In order to obtain a quantitative estimate of the accuracy and reliability of our data reduction procedures and results, we have performed a data reduction pipeline based on the following steps: i) define a set of simulated HST-like images with synthetic globular cluster stellar distributions, which provide the ``true'' data for comparison; ii) convolve these images with appropriate assumptions of PSF and noise in order to construct simulated `` observed '' ... It contains 470 stars. b) ...

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• Obsolescent Acquisition Parameters
• Guidelines for Preparing Viewgraphs and Computer based Presentations to be used
• Comments

... Europe at Night . ... The above picture is actually a composite of over 200 images made by satellites orbiting the Earth. Star Wars in NGC 664 . ... Landsat 7 Views Planet Earth . ... Here, a high concentration of dust and molecular gas absorb practically all the visible light emitted from background stars. Polar Ring Galaxy NGC 4650A . ... A rare type of galaxy known as a Polar Ring, NGC 4650A is composed of an old central group of stars and a young ring of stars rotating farther out. ...

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... Bojan Nikolic web pages (r. 329) . ... Atmospheric Modelling for ALMA . This is a short and simple illustration of how to use (A)ATM to calculate the dispersive path delay introduced by the atmosphere as well as the non-dispersive parts. ... Compute dispersive delay in the atmosphere This program is part of AATM version 0.06 GPL license -- you have the right to the source code. ... Computing dispersive atmospheric delay with AATM . ... Computing atmospheric absorption with AATM . ...

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• Computing dispersive atmospheric delay with AATM
• Some notes using the Maxima system Bojan Nikolic web pages (r. 329)
• Bojan Nikolic -- Calculating dispersive path delay due to the atmosphere

... References: %observed energy levels: Johansson L., Magnusson C.E., Joelsson I., Zetterberg P.O., Physica Scripta 46, 221, 1992 %theoretical energy levels: Tayal S.S., Gupta G.P., ApJ 526, 544, 1999 %comment Level ordering is from Tayal Gupta. %comment: Note that Tayal Gupta do not include the 3F and 1F terms from the 3p.4d configuration in their S III model. Produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % P.R. Young, Dec-99 . ...

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• Virgo Group - Gravitational Wave basics
• HwB: C16/C116/+4 Joystick Connector (Offline)

. (At the Computer) . 9 PIN D-SUB MALE at the Computer. Pin . Name . Dir . Description . 1 . CD . Carrier Detect . 2 . RXD . Receive Data . 3 . TXD . Transmit Data . 4 . DTR . Data Terminal Ready . 5 . GND . System Ground . 6 . DSR . Data Set Ready . 7 . RTS . Request to Send . 8 . CTS . Clear to Send . 9 . RI . Ring Indicator Note: Direction is DTE (Computer) relative DCE (Modem). Contributor: Joakim жgren Source: ? Please send any comments to Joakim жgren .

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• HwB: C16/C116/+4 Joystick Connector
• HwB: Serial Printer (9-25) Cable
• HwB: Serial Printer (25-25) Cable

A very important stage in a story of formation of any new science is the shift from discussion of situation which are possible but do not occur in practice due to some reason to recognition of real phenomena of interest. ... We suggest to consider computer viruses as this new specific form of life which is coming in the contact with our form of life. ... Computer life has been created by human being, the role of independent evolution of computer viruses seems to be still negligible. ...

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... Tonight's Sky . ... Sky this Month . ... space flight . ... space physics . ... The Sky This Week: April 1 - 10 . ... Sky this Week . ... Massive computer simulation detects cause of high-speed electronics in space . ... A mysterious phenomenon detected by space probes has finally been explained thanks to a massive computer simulation that was able to precisely align with details of the spacecraft observations. ... Only registered members of Astronomy.com are allowed to comment on this article. ...

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• Mystery of disappearing asteroids solved | Astronomy.com
• Universe in a computer | Astronomy.com
• Different faces of Pluto emerging in new images from New Horizons |

The AstroGuide . ... AstroGuide | ... AstroGuide Listing . Login . See many more Astronomy Listings by: Category or Alphabet . ... They also provide consulting services in the general area of scientific data acquisition and visualization. ... Listed Since February 16, 1999 . ... Web Site . ... Web . ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . are trademarks of John Huggins ...

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• Motorize Your Telescope and add computer control, AstroGuide Listing
• Computer Optical Products, Inc., AstroGuide Listing
• Finding Himalia, The Fifth Brightest Moon Of Jupiter - an Astronomy Net Article

Title :No Rest No Peace Part 3: Night and Day Name of wad-file :NOREST3.WAD Name of zip-file :NOREST3.ZIP Author :Leon Kelz Email Address :KELZ-LE@reze-1.rz.rwth-aachen.de if this doesn't work, try: familiekelz@yahoo.com Misc. ... Description :A three-level-episode called "Night and Day" plus three bonus maps for single player. ... More information * >>> about "Night and Day" (Map01 - Map03) ========================================= Secrets: There are secrets of different kinds. ...

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• Different Fortran standards
• Image: You have to be computer geek to understand the fun of this picture.
• Image: On the street, near Computer and Childen Museums