... Data . ... Retrieving HST Data . ... There are currently four UNI (flatfield) files for the f /96 camera at 1360, 4800, 5600, and 6600 and two UNI files for the f /48 camera at 3345 and 4800 . ... In flatfields with count rates between about 0.02 and 0.1 counts pixel -1 s -1 for a 512 x 512 format, the rms amplitude of the pattern is about 5% of the flatfield counts for f /96 and about 2.5% for f /48 (the peak deviations from a flat response due to this pattern are at least twice these values). ...

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• Flat Field Response
• NICMOS Data Handbook
• NICMOS Instrument Handbook

... Science . ... Science Users Information > Data Handling and Products > Data Reduction FAQ > The response curve leaves residual instrument features in my science. ... Observing Facilities . ... Observing with ESO Telescopes . ... Science Data Products Forum . ... Science Archive Facility . ... ESO Data . ... ESO Data Access Policy . ... ESO Science Newsletter . ... To can be avoided by flat-fielding the flux standard star spectrum with the same flat field as is used for the science data. ...

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• Astronomical Image Retouching

... 2010 January 3 . A Force from Empty Space: The Casimir Effect . ... Measuring slightly over one tenth of a millimeter, the ball moves toward a smooth plate in response to energy fluctuations in the vacuum of empty space. ... The form and genesis of dark energy is almost completely unknown, but postulated as related to vacuum fluctuations similar to the Casimir Effect but generated somehow by space itself . ... Note: An APOD editor will review astronomy images of 2009 , . ... About APOD | ...

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• APOD: 2015 December 6 - A Force from Empty Space: The Casimir Effect
• APOD: 2002 September 17 - A Force from Empty Space: The Casimir Effect
• APOD: 2006 December 17 - A Force from Empty Space: The Casimir Effect

... Data Analysis SAS News What is SAS? ... Back to Calibration Homepage The most recent Canned Response Matrices can be downloaded here (please refer to Update 2014-11-24 ) and can be used to estimate EPIC count rates in AO15. ... PN response files . ... MOS response files . Since SAS 6.5 the full set of ready-made MOS response files is not provided (see "Update 2005-12-15" ). ... Note: MOS response files before SAS 6.5 had a different nomenclature as the one listed above (see "Update 2005-12-15" ). ...

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• Response matrix
• Description

... Posts tagged ?effective area? ... highlighting some equation that is widely used in astrophysics or astrostatistics. ... Tags: ARF , effective area , EotW , Equation , Equation of the Week , LRF , point spread function , PSF , response matrix , RMF , source . ... Comment . ... Entries RSS . Comments RSS . ... vlk on [MADS] Parallel Coordinates . upvc windows on [MADS] Parallel Coordinates . ... Alfred Inselberg on [MADS] Parallel Coordinates . ... Entries (RSS) and Comments (RSS) . ...

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• The AstroStat Slog response matrix
• The AstroStat Slog Blog Archive Equation of the Week: Confronting data with
• The AstroStat Slog source

... Apache HTTP Server Version 2.4 . ... Although the Apache HTTP Server provides generic error responses in the event of 4xx or 5xx HTTP status codes, these responses are rather stark, uninformative, and can be intimidating to site users. ... Additionally, a set of values are provided, so that the error document can be customized further based on the values of these variables, using Server Side Includes . ... Customizing Error Responses . ... ErrorDocument 500 http://error.example.com/server_error.html...

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• Overview of new features in Apache 2.0 - Apache HTTP Server
• IBIS - Flat Fielding
• Module Index - Apache HTTP Server

The night after the John Glenn program, I pitched the terraforming idea to my students. I asked them if they'd like to terraform Mars as a big class project; I wanted to throw the idea to them and see how they would react. Already I had a vision of splitting the class into several groups and having each group take charge of a portion of the project. ... Following my initial idea on how to conduct the project, I split the class into six groups, each student choosing his or her group. ...

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• ASP: AstroCappella - A Musical Exploration of the Universe
• ASP: Past Pricilla and Bart Bok Award Winners

X-ray CCD Camera : C6086 Series . The C6086 X-ray CCD camera was specifically developed for X-ray observation. A CCD coupled with X-ray scintilator is used for detection. ... Effective sensitive area of 2/3, 1.5, 2.5 inch. ... 25 m m min . ... If you have comments or are requesting any information, please contact export@sys.hpk.co.jp(X-ray CCD). Information furnished by HAMAMATSU is believed to be reliable. ... Copyright 1997 Hamamatsu Photonics K.K. Created in February 1997 . ...

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• Overview of new features in Apache 2.0 - Apache HTTP Server
• Fitting the Blaze Function
• Using a Standard Star

Next: Feature enhancement: local Up: No Title Previous: Feature enhancement: filtering . ... As a result, a common magnitude scale (contour lines on the maps above, or color scale on Fig.1) will poorly display the short-duration events in a signal. Normalizing each line of the map (fixed duration) so it has unit variance (in effect dividing the energy map by the mean energy spectrum) at each duration restores more details of small-scale activity (Fig. ...

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• Feature enhancement: filtering and denoising
• Feature enhancement: local maxima
• Feature enhancement: pulsing

... Laboratory and theoretical modelling of the UV bump on the interstellar extinction curve is a very popular topic in dusty investigations. ... feature is illustrated by Fig. 10 where the profiles were calculated using the model of graphite spheres. Figure 10: Normalized extinction efficiencies for graphite spheres. ... The lower panel shows the summary extinction of two graphite spheres with radii and (from upper panel) taken in equal proportions. ...

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• Polarization properties (transmitted radiation)

... Briefly, the count rate at the detector from a source at a redshift z is . ... Another possible way that could lead to arising diverse peculiarities in the - distribution induced by the sources evolution is connected with a possible non-monotonic character of the star formation rate in galaxies. ... The most prominent feature of the obtained theoretical - is a notable sharp increase at low count rates due to evolutionary effects. ...

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• AXAF-Chandra

... In the experiment the following physical phenomena are proposed to be demonstrated in microgravity: . ... a series of the experiment sessions with Letauschaya Tarelka device); . ... Faza device; . ... check for the following onboard the ISS RS: a capability to demonstrate the action of physical laws of dynamics of reactive and gyroscopic forces on ellipsoid (Letauschaya Tarelka device) rotating in the unsupported medium in microgravity, with video record of its behavior in the station module; . ...

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• S.P. Korolev RSC Energia - International Space Station

... Bojan Nikolic web pages (r. 329) . ... Using high-resolution three-dimensional realisations of turbulent fields, we investigate the limits on achievable performance of atmospheric phase correction using water-vapour radiometers arising from following effects: the incoherent measurement of power from water by the radiometers (in contrast to coherent detection of the astronomical signal); the different tapers of the response patterns of the astronomical and radiometer receivers; and, the ...

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• Simulating Atmospheric Phase Errors, Phase Correction and the Impact on ALMA
• OptInt PmWiki : PmWiki / Group Customizations

... Unlike clients such as Shout and IceDJ this permits the broadcast of live audio, rather than prerecorded mp3's. LiveIce was developed after the appearance of IceCast to provide the Real Time streaming functionality which makes it a viable solution for broadcasting. It is based on the guts of 2 of my previous works - Mp3Serv, the first mp3 broadcasting system & Mp3Mixer, a toy which allows the user to 'Mix' with mp3 streams. ... LiveIce XMMS sourcecode is available here . ...

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• http://star.arm.ac.uk/~ambn/abstract328.html
• Featured Image | International Year of Astronomy in Ireland | Astronomy 2009
• Armagh Observatory

... Tonight's Sky . ... The Magazine . ... Observing . ... Magazine . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... galaxies . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... The doppelgУ?nger effect . ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...

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• Is it possible that the gravitational effects attributed to dark matter could
• Effects of the eclipse | Astronomy.com
• What effect, if any, do the objects in the Kuiper Belt and Oort Cloud have on

... Telescopes . LX850 Series . ... Superb optical performance coupled with time proven computerized pointing and tracking has made the LX200 ACF series a best-seller in the high-performance telescope class. ... Meade's revolutionary LS LightSwitchтДв series of telescopes use advanced technologies to do what no other consumer telescopes have done before: take all the hassle out of using a telescope. ... Meade Variable Projection Camera Adapter (1.25") . ... The Variable Projection Camera Adapter. ...

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• Meade Variable Projection Camera Adapter (1.25") - Photography Accessories -
• Meade Basic Camera Adapter (1.25")
• Meade Basic Camera Adapter (1.25") - Photography Accessories - Accessories -

... New IRAF tools for the photometric calibration of optical/IR images are presented. The new tools are standard star catalog and world coordinate driven, requiring both accurate standard star catalog coordinate and accurate image coordinate data. Network access to standard star catalog servers is supported. ... The photometric calibration software will automatically convert the standard star coordinates from the standard star coordinate system to the image coordinate system. ...

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• ISO-SWS Data Analysis
• A New PROS Task for Calculating HRI Source Intensities or Upper Limits
• Automatic Detection of Linear Features in Astronomical Images

. Previous slide . Next slide . Back to first slide . View graphic version .

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• Comparison of a synthetic radio image and quasar 3C 48

Below is a list of all of the modules that come as part of the Apache distribution. ... mod_setenvif Apache 1.3 and up . ... mod_unique_id Apache 1.3 and up . ... Determining document types using file extensions . ... mod_rewrite Apache 1.2 and up . ... User authentication using text files . ... User authentication using DBM files . ... User authentication using Berkeley DB files . mod_auth_anon Apache 1.1 and up . ... User-configurable logging replacement for mod_log_common . ...

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• Site Map
• Custom error responses
• Apache module mod_isapi

Introduction to Imaging Mark Wieringa - ATNF Fourier Basics Image plane and uv-plane Imaging decisions Image estimation Image errors 12/5/2003 Synthesis Imaging Workshop 1 Fourier Basics f(x) Large f(ax Real F(s) Small F(s/a) Hermitian (F(s)=F(-s)*) g ) Multiply f Shift f(x+a) Add f+g Rotate Convolve F*G Phase Gradient Add(F+G) Rotate 12/5/2003 Synthesis Imaging Workshop 2 Image Plane and UV plane 12/5/2003 Synthesis Imaging Workshop 3 UV plane features ! ...

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• difx:d202wishes [ATNF VLBI Wiki]
• Common Features
• H Undocumented Features