... WF/PC-1 Data Handbook . ... Director's Page . ... The photometric accuracy of the data is often limited by the quality of the flatfield used to calibrate the data (see "Determining the "Best" Reference Files" on page 45-14 as well as the WWW Reference File and Closure Flat Memos). ... In this section, we summarize residual features that may remain; we recommend experimenting with different flatfields to determine which are best for the data (see "Improving the Flatfield Correction" on page 46-15 ). ...

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... Science . ... Data Handling and Products > Data Reduction FAQ > My MR+GG475 data show strong absorption features below 6000A. Where do they come from and how can I correct them? ... Observing with ESO Telescopes . ... Science Data Products Forum . ... The absorption comes from impurities in the GG475 filters and the first and third quadrant are most strongly affected (see plot - the black curve shows the spectrum of a featureless star observed in Q1, the green shows the same star observed in Q3). ...

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... 11 Yellow-Green (78% transmission): Contrasts well with the red and blue characteristics of surface features on Jupiter and Saturn. ... 82A Light Blue (73% transmission): Useful on the Moon, Mars, Jupiter, and Saturn, this subtle pale blue filter enhances areas of low contrast while avoiding significant reduction of overall image brightness. ... Meade Series 4000 Photo-Visual Color Filters may be ordered individually or in the following sets: . ... Meade Series 4000 Broadband Nebular Filters . ...

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... Chapter 9 Embedding JavaScript in HTML You can embed JavaScript in an HTML document as statements and functions within a <SCRIPT> tag, by specifying a file as the JavaScript source, by specifying a JavaScript expression as the value of an HTML attribute, or as event handlers within certain other HTML tags (primarily form elements). Chapter 10 Handling Events JavaScript applications in Navigator are largely event-driven. ...

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• New Features in this Release
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• Overview of new features in Apache HTTP Server 2.2 - Apache HTTP Server

... 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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• Wavelength dependence
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• Footnotes

Since the light from galaxies represents the integrated contribution of its consitutient stars, then we can learn about stellar populations in galaxies by modelling their light by summing up individual stellar spectra for different kinds of stars. ... The data cover the wavelength range 3500 - 9000 angstroms. ... Retrieve Digital Stellar Spectra Click on the appropriate spectral type. ... Note that the designation V means main sequence, IV means subgiants, III means giants, I means supergiant. ...

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Next: Feature enhancement: normalizing Up: No Title Previous: Feature enhancement: pulsing . The inverse transform is at the core of the best known applications of wavelets: data compaction and numerics. ... Two applications fall within our scope: filtering and denoising. Filtering consists of using only a portion of the wavelet map in the inverse transform process, masking out certain durations. ... Figure 23: Filtered reconstruction of the intermittent signal. ...

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• Feature enhancement: normalizing
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... The foot-point of the bright feature becomes weak. Magnetic fragment behaviour Note A bipolar region with very weak positive and Start of the data set. ... At the east, a stronger bipolar region relate to many bipolar regions. presented and cancellation occurs. 01:34 The negative fragments in the "weak bipolar region" become bigger and stronger. 01:50 The foot-points of The positive fragments in the "weak bipolar the jet-like feature region" become stronger and bigger. ...

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• Featured Image | International Year of Astronomy in Ireland | Astronomy 2009
• Armagh Observatory
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... 2015 January 26 . The Milky Way over the Seven Strong Men Rock Formations . ... Explanation: You may have heard of the Seven Sisters in the sky, but have you heard about the Seven Strong Men on the ground? Located just west of the Ural Mountains , the unusual Manpupuner rock formations are one of the Seven Wonders of Russia . ... Follow APOD on: Facebook , Google Plus , or Twitter . Tomorrow's picture: milky way magnet . ... About APOD | ...

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... title='Набор ножей Fiskars 857197' border='0' align='left' width='120' style='margin-right: 20px;' hspace='7' vspace='5'/> . Бренд: FEATURING . Цвет: натуральный . Размер: M . ... Возраст от месяцев: -2147483648 . ... Пол: Унисекс . ... Он отлично сохраняет тепло, позволяя малышам играть на полу. ... Свободный крой, капюшон, удобные карманы и чуть укороченный дизайн - хлопковая куртка Sorrento Jacket поможет Вам создать непринужденный образ и дополнить Ваш лук прохладным летним вечером. ...

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Next: Coordinate Systems Up: IRAF/PROS Previous: Other Types of Files . A few new features and enhancements to the standard IRAF system have been introduced with the PROS software: . ... Default compound extensions are used by the PROS tasks when no extension is given for the output file name. Most PROS tasks allow the output file name to be defaulted, with the convention that the output file name will be composed of the input `root' name, plus the default extension specific to the task. ...

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Next: stecf.impol - Package Tasks Up: stecf.impol - an IRAF Previous: stecf.impol - an IRAF . All the instrumental set-up, such as filters, polarizers, rotation angles, etc. are read from the image headers. Many input images ( 3 < N < 64) can be processed. ... Output images can be rebinned to increase the polarization signal-to-noise per output pixel. ... Output error images have fully propagated statistical errors from the input error images. ...

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... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Astrophysics graduate student programs . ... Facilities . ATNF facilities . ... Australian Square Kilometre Array Pathfinder . Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . ... Visiting Parkes radio telescope . Visiting Australia Telescope Compact Array . ... Parkes radio telescope webcam . ...

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• Post-Correlation - Features
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... Arcs are the most typical auroral forms in the premidnight sector auroral oval . ... There are two types of electric fields related to auroral arcs (see, e.g., Johnson et al., ... The first one, polarization electric field, forms withing the arc because of the increased ionospheric conductivity (de la Beaujardiere, 1977, 1981). ... Res., ... Lanchester, B. S., K. Kaila, I. W. McCrea, Relationship between large horizontal electric fields and auroral arc elements, J. Geophys. ... Geophys., ...

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GTK+ / Gnome Application Development . ... Home . ... There simply isn't space to cover all of glib's features in this book. ... Here's a brief list of features not already mentioned: . ... G_VA_COPY copies a va_list in a portable way. ... Convenience/portability routines to get the user's home directory, get the name of a /tmp directory, and similar tasks. ... If you need some generally-useful routine that's not in glib already, consider writing it in glib style and contributing it to the library! ...

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... -2 3 -4 2 -6 1 -8 -10 -12 -46 19.05.2009 20.05.2009 21.05.2009 22.05.2009 26.05.2009 27.05.2009 28.05.2009 29.05.2009 0 -1 -46 - 45.5 -45 -44.5 -44 - 43.5 -43 - 42.5 -42 - 45.5 -45 -44.5 -44 - 43.5 -43 - 42.5 -42 7 7 7 7 7 7 7 7 6 May 19 6 May 20 6 May 21 6 May 22 6 May 26 6 May 27 6 May 28 6 May 29 5 5 5 5 5 5 5 5 4 4 4 4 4 4 4 4 3 3 3 3 3 3 3 3 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 -1 -1 -1 -1 -46 - 45.5 -45 -4 .5 -4 - 43.5 -43 - 42.5 - ...

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• Solar system sector, archive 2010

... Using the DRAO Synthesis Telescope (Landecker et al. 2000), the Canadian Galactic Plane Survey ( CGPS ; Taylor et al. 2002) has captured a multitude of HISA features, the majority of which are invisible in prior surveys at lower resolution. ... Since the HISA gas temperature must be less than the background brightness temperature, all the H I shown in this poster has T ~ 100 K. Figure 1 provides panoramic views of the cold H I visible as HISA in the CGPS. ... GIFs: HISA + CO | HISA only | ...

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... 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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. The shell provides you with one or more of the following features. You can: . create an environment that meets your needs . write shell scripts . define command aliases . manipulate the command history . automatically complete the command line . edit the command line . Some shells provide more of these facilites than others. Summary table .

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... If finddead =Y, embadpixfind looks for too dark pixels, rows and columns too. ... The maxratio parameter avoids detecting 'grey' pixels, rows or columns on observations with high statistics. Whatever findbright and finddead , dark and bright columns and rows are always searched for together in order of decreasing significance (either positive or negative). This avoids finding spurious bright columns/rows next to very dark ones, and vice-versa. ...

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• Algorithm