... Individual echelle orders are extracted by adding the pixel values over a numerical slit running along the orders, with the position of the slit center defined by equation . The width of the slit is one pixel and its length, as well as an optional offset to shift the slit prependicular to the dispersion direction, are defined by the user. ... There are several effects to consider when defining the length of the extraction slit. ... The command EXTRACT/ECHELLE is used for the order extraction. ...

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• Order Definition
• Order definition: Method Hough
• Wavelength calibration

... The following table summarizes the useful wavelength range for each of the first-order gratings of GHRS. ... The following figures illustrate the resolving power as measured for each of GHRS' gratings. ... The nominal design specification for the GHRS was R = 20,000 for the first-order gratings, but in fact one can exceed a resolving power of 25,000 at virtually all wavelengths. ... Figure 8.2: - Resolving power for grating G140L. Sensitivity Functions for the First-Order Gratings . ...

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• WFC3 Instrument Handbook
• GHRS Instrument Handbook
• COS Spectroscopic Observing Strategies

This thread illustrates how to evaluate if your RGS observation is affected by pile-up; if so, how to deal with it in some special cases; and how to prevent it occurring. ... Pile-up will cause two coincident first order . ... Thus, pile-up may differ between RGS1 and RGS2 and may abruptly vary between CCD locations due to the nominal event pattern distribution variations over the detectors. ... Migration of photons from 1st to 2nd order (or from 2nd order to 3rd order) . ...

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• Wavelength calibration
• The spectrum-selection window
• Source detection

Next: Image Arithmetic - MATHS Up: Image Analysis Previous: Source Fitting and Positions . The task imsub allows you to extract out some region of one image and copy it to a new image. ... Input image . ... Output image . ... The task reorder enables you to reorder the axes of an image. ... The task regrid enables you to take an image, and regrid it via a cubic interpolation scheme on a new grid. ... In this simple example, we regrid the first two axes of an image via a template image. ...

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• rmclean
• reorder
• casacore: casa::TableParseSort Class Reference

... The calibration of astrophysical spectra in wavelength based on calibration lamp data suffers from different kinds of uncertainties. Besides inaccuracies in the observational phase, common data reduction practice adds ``pixelation'' errors, due to the fact that the centering method does not use the correct PSF. These model mismatch errors depend, for a given feature, on the sub-pixel location of the line center (David & Verschueren, private communication). ...

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• ADASS 2002 Conference Proceedings
• The Basic Calibrated Data Processing Pipeline for SIRTF IRS
• Modeling Scattered Light in the HST Faint Object Spectrograph

... Content Model: Optional list header (LH), followed by one or more list items (LI) . An unordered list typically is a bulleted list of items. ... Note: Some legacy documents may include headers or plain text before the first LI element. ... DIR lists are used to present lists of items containing up to 20 characters each. ... CLASS . ... The WRAP attribute is used for multicolumn lists. Use wrap=vert if you want to arrange the list items down the page before wrapping to the next column. ...

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• Ordered Lists
• Examples of changing the sort order
• Options that can be used to change the sort order

... 8.633400E-4 1) This may be read into IDL using the procedure ucles_read, file , w, f file : string : : in : name of file containing data w : array : (2048, nord) : out : wavelengths for each order f : array : (2048, nord, narr) : out : fluxes in each array 2) The next step is to remove the gross continuum shape using the procedure ucles_norm, w, f, fn, fs w : array : (2048, nord) : in : wavelengths for each ... 3) Define a standard wavelength grid for the entire spectrum....

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• http://star.arm.ac.uk/~csj/idl/UCLES/ucles_merge.pro
• Spectrum v1 - Examples

Ordering Department . ... Fax: (415) 337-5205 . ... E-mail: If you purchased a volume with the new electronic access, you must submit an email address in order to receive instructions on how to access this volume. ... Volume Number . ... Cost each . ... Shipping Handling . Conference Series shipping costs | Monograph Publications shipping costs | IAU Publications shipping costs . ... ASP Membership # __ __ __ __ __ __ (necessary for member discounted rate) . Method of Payment . ...

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• ASP: IAU Publications Ordering Information
• ASP: Institutional Mercury Subscription Order/Renewal Form
• ASP: Mercury Magazine Order Form

... OOF . ... OOF Index . ... OOF software . ... Fits up to fifth order . ... These are experimental data currently being analysed, not final documentation of research. ... Only fitting for Zernike orders up to and including 3rd to concentrate on finding possible off-axis aberrations. ... The results below show that when fitting for all Zernikes up to and including fifth order, the output maps vary greatly between pixels. As above, but fitting up to fifth order Zernike polynomial. ...

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• Retrieval of surface from data across the MUSTANG field (Part 2)
• Some notes on the GNU toolchain Bojan Nikolic web pages (r. 329)
• Astrophysics Group Fringes and Power Spectra from COAST

The optical scheme of the instrument is sketched in Figure 1 , it is designed to match the F/20 focal ratio of the TIRGO telescope. We have, following the optical path, the window of the dewar, the order sorting filter (not in figure), a field lens, in Calcium Floride, and the slit, in the focal plane of the telescope. ... The resolving power is (for first order of grating) of about 600 in the center of J band and 950 in the center of the K band, using a slit of two pixel (3.46 arcsec). ...

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• Not page size, page order
• Optical turbulence
• CHIANTI atomic database

Next: Imaging Polarimetry with NICMOS Up: NICMOS Data Calibration and Previous: The Photometric Performance of . ... NICMOSlook and Calnic C . ... Extracting spectra from a large number of NICMOS grism images requires a convenient interactive tool which allows a user to manipulate direct/grism image pairs. ... NICMOSlook and Calnic-C are two programs that were designed to take advantage of the fact that the NICMOS grism mode typically consists of taking both a direct and a grism image. ...

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• The Photometric Performance of the NICMOS Grisms
• MAKEFLAT (Sep99) --- nictools --- MAKEFLAT (Sep99)

... The choice of the spectrograph design (Fig.2) is determined by the quantity R, the overall dimensions of the PF cage and the restrictions on the rigidity of the structure of the device. ... As the camera's objective a fast 4-lens aplanat is used having a focal distance F cam =140 mm and a relative aperture of 1:1.8, the resolution at the centre is no less than 80 gr/mm, that over the field at a distance of 3 mm from the edge along the frame ( ) diagonal is 35 gr/mm. ...

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• New spectrum of MWC162 6-m telescope: representative spectra
• Observational data and reduction
• Narrow DIBs survey - figure25

... Science . ... Science Users Information > Data Handling and Products > Data Reduction FAQ > Are there order definition frames with spatial information, i.e. using 9 pinholes instead of 1? ... Science Users Information . ... Observing with ESO Telescopes . ... Science Software . ... ESO-MIDAS . ... Science Data Products Forum . ... Science Archive Facility . ... ESO Data . ... ESO HST Image Galleries . ... ESO Data Access Policy . ... ESO Science Newsletter . ... Information resources . ...

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• Basic CCD image processing
• Homepage of Christian A. Hummel
• FORS1 Photometric System Characterization

... People . Posts tagged ?order? ... How would you assign orders to multivariate data? ... MADS] data depth? Tags: break points , data depth , MADS , mean , median , multivariate , nonparametric , order , parasite , quantile , robust , sort , vertebrate . ... 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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• HST/FOS Atlas of AGN and Quasars
• Array File Specifications
• A matrix of tweets from #AAS221

... Цвет: CAMO . ... Модель: NEW ORDER CARGO . Сезон: SS15 . Размер US: 33 . ... Платье прилегающего силуэта с рельефами и резами на передней и задней частях изделия. ... Цвет: черный, серый, синий Длина рукава - 30 см Рост девушки-фотомодели - 180 см Длина изделия: 48 размер - 98 + 2 см 50 размер - 98 + 2 см 52 размер - 98 + 2 см 54 размер - 100 + 2 см 56 размер - 100 + 2 см . ... По материалу: Хлопок,Трикотаж . ... По форме: Платье - футляр . ... Материал: 50% хлопок 45% полиэстер 5% эластан . ...

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• Спорт.трикотаж Humor - Humor - Humor ЖК-монитор более 24" Viewsonic
• Прогулочная коляска с конвертом Prism S-901 WFM, Jetem, малиновый BILLABONG NEW

The AstroGuide . ... AstroGuide | ... AstroGuide Listing . Login . See many more Astronomy Listings by: Category or Alphabet . RealSky CD CD offers telescopic detail down to 19th magnitude, but is no longer produced by the Astronomical Society of the Pacific. ... Web Site . ... Web . www.astronomy.net . About Astronomy Net | ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

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• PS Some Events Listed In Date Order - an Astronomy Net God Science Forum...

... Recent Topics . ... MAO main . ... The third-order space-by-time relation . ... Тема: The third-order space-by-time relation . ... The mass m experiences a gravity force toward the sun and . ... will experience the Coriolis force or Coriolis acceleration. ... differentiated space-by-time twice and discovered equation2. ... If one differentiates . ... time differentiation of space-by-time. ... third-order space-by-time relation. ... understand the third-order space-by-time relation. ... MAO NASU . ...

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• Optical systems and devices

... Russian Foundation for Basic Research , Project number 98-02-17366 . ... A number of experiments proposes the d -type of the wave function, having two directions with positive and two (in orthogonal direction) - with negative sign of the order parameter. ... The effect of the wave function phase is most efficiently revealed in the experiments with Josephson structures, that are used for determination of the dependences on the pulse direction. ... The project goals are: . ...

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• Getting Started in Actor Prolog. Underdetermined Sets.

Computer Ephemeris. Second order reduction quantities. Explanations. This page consist of four little tables. First and second tables contains J a (in 0.000001 s ) and J d (0.0001") for nothern declination, third and fourth contains the same information but for southern declination. Each table have 13 informational columns headed with right ascension values, and some amount of rows, labelled with date. ...

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• Optical static Fourier spectrometer

The alfa high cal was measured in the lab in apr04. The noise figure analyzer was used stepping the frequency by 10 Mhz for each measurement. ... The measured data was fit with a 3rd order polynomial over the range 1230 to 1520 Mhz. ... Figure 1: Pol A measured cal values (black) and 3rd order fit (red) for the 7 pixels. ... There is a high frequency structure in some of the measured cals with a period of about 50 Mhz. ... For now the cal values will be those of the 3rd order fit . ...

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• http://www.naic.edu/~phil/hardware/galfa/cablsw_jul05.html
• http://www.naic.edu/~phil/mbeam/problems/bm1a_noisy_01nov06.html
• http://www.naic.edu/~phil/mbeam/center_channel.html