... 2.1 What is Dithering? ... 2.4.1 No Dithering . ... 2.4.4 Dithering for Parallel Images . 2.5 More Detailed Considerations . 2.5.1 Data Quality Issues involved in Dithering . ... 2.5.4 How many Images to Obtain at each Dither Location . ... 3.2.3 Drizzle . ... 3.4 Image Fidelity After Drizzling . ... 4.2.1 Introduction . ... 5.3.2 Parameters . 5.3.3 Basic Examples . ... 5.4.8.1 General Explanation . 5.4.8.2 Parameter Details . ... 5.5 Optimizing the Drizzle Parameters for Your Data . ...

Еще в разделе: (Показать все результаты (>17128) - www.stsci.edu/ )

• NICMOS Data Handbook
• Surface Brightness Parameters from Deconvolved PC Images of Elliptical Galaxies

The position of the objects on the sky were generally measured to a precision between 1 and 4 arcsec. ... For the stars, the position is always at epoch 2000, whatever J2000 or B1950 coordinates are printed. ... The celestial position is given as coordinates in 4 different systems: . ... B1950 . ... Galactic coordinates in the reference frame called "new" system, adopted by IAU in 1958. Galactic pole at B124900.0+272400, node at ra=282.25,l=33 deg (inclination 62.6 deg). ... 1 arcsec . ...

Еще в разделе: (Показать все результаты (>2487) - www.sao.ru/ )

• HyperLEDA documentation: parameter: pa
• The main observational parameters
• Documentation: LEDA: parameter: vopt

... We demonstrate through numerical simulations that model parameters estimated with our technique are essentially bias-free, even when the average number of counts per bin is 1. ... The IW technique avoids such biases by estimating through successive iterations, where for each iteration, j, , and the best-fit parameters are determined by minimization of . ... In our sample, we find that the minimum values and best-fit parameters converge after about 6 iterations. ...

Еще в разделе: (Показать все результаты (>1833) - www.adass.org/ )

• A Python-based IRAF Task Parameter Editor
• Calculating the Position and Velocity Components of HST
• ASC Coordinate Transformation-The Pixlib Library

... Meta Index / Home Page This section documents the parameters recognized by this task (if any). Parameter . ... table . Name of the source time series file . ... Event list used to extract the original time series . ... boolean . false . Boolean to enable/disable the background time serie . ... Name of the background time series . ... Name of the output file . ... Source position specified . ... Coordinate system for which source position is specified . ... X position of source . ...

Еще в разделе: (Показать все результаты (>16300) - xmm.vilspa.esa.es/ )

• Command-line position entry.
• Housekeeping parameters

Next: Details of Setup File Up: Setup Files Previous: Examples of Setup Files Contents . A list of the setup parameters is given below, followed by detailed information on each setup paramater in Section 3.6.4 . ... Note that the VLBA uses the concept of baseband channels. ... BBC: BBC assigned to each baseband channel. ... IFCHAN: IF channel to BBC for each baseband channel. ... NCHAN: Number of baseband channels. ... TPSPEEDH: Tape speed in inches per second at high density (obsolete). ...

Еще в разделе: (Показать все результаты (>21190) - www.atnf.csiro.au/ )

• Details of Tape Initialization Parameters
• Details of Setup File Parameters
• Details of SCHED Parameters

... rotang, Date, RA, Dec, Time, accS, ast=ast, ha=ha, lst=lst, jd=jd, az=az, za=za, sep=sep, rotang=rotang, alfabeams=alfabeams . ... It is thus possible to specify, for instance: rotang, ... , ha=haHr, lst=lstHr, ast=astHr . ... alfa_angle - script to launch the GUI . alfa_ang.pro - the GUI: provides input to rotang and a graphical display of the results. rotang.pro - the main routine of the program: finds the required time, the other associated times, Az and ZA using ao_idl routines. ...

Еще в разделе: (Показать все результаты (>3564) - www.naic.edu/ )

• Orbits in the period / acceleration plane

Stellarium 0.12.3 . ... TextParams Struct Reference . Parameters specifying how to draw text. ... TextParams (const float x, const float y, const QString &string) . Construct TextParams with default parameters. ... TextParams ( Vector3 < F > &position3D, StelProjectorP projector , const QString &string) . Construct TextParams to draw text at a 3D position, using specified projector. ... string љ . ... Text string to draw. ... The required string parameter is also set, as is the projector. ...

Еще в разделе: (Показать все результаты (>1468) - astro.uni-altai.ru/ )

• Stellarium: Skybright Class Reference
• Stellarium: ScreenImage Class Reference
• Stellarium: StelGeometryBuilder Class Reference

... Impact of Covariance Information on the Orientation Parameters Between Radio Source Position Catalogs, IVS 2012 General Meeting Proceedings, p.339­341 http://ivscc.gsfc.nasa.gov/publications/gm2012/sokolova.pdf Impact of Covariance Information on the Orientation Parameters Between Radio Source ... IVS Analysis Centers provide these catalogs in a standard IERS format, where together with radio source positions and other relevant information, RA/DE correlations are reported. ...

Еще в разделе: (Показать все результаты (>276) - www.gao.spb.ru/ )

• http://www.gao.spb.ru/english/as/j2014/presentations/suvorkin.pdf

tranback -- Transform an X,Y position from output to input pixel position using the same conventions as drizzle tranback xout yout . xout = 400 [real] . ... The X dimension of the input image (this is used to determine the centre which is the origin of the transformations). (nyin = 800) [real] . ... If "output" the input image center is mapped to the center of the output grid, rotated about that center and then shifted along the grid of the output image. ...

Еще в разделе: (Показать все результаты (>259) - www.stecf.org/ )

• TRAXY (V0.4) --- Dec99 --- TRAXY (V0.4)
• ST-ECF IRAF package
• POLIMPLOT (V1.00) --- April99 --- POLIMPLOT (V1.00)

... This appartus will drop a mass from different heights. When the mass strikes the ground, some percentage of its original energy will be absorbed by the ground. ... The percentage of the energy which is absorbed by the surface on each "bounce" (EAS) . ... The impact velocity of the object will also be given at each bounce. ... Start= Drop the ball after Energy, Mass and EAS have been set; resume after step or pause has been selected . ... Reset = Reset experiment to intial values . ...

Еще в разделе: (Показать все результаты (>274) - zebu.uoregon.edu/ )

• Low Surface Brightness Galaxy Gallery

... Figure: Massive binary evolutionary track. ... A short glance to this track is sufficient to understand that there are a lot of evolutionary scenario parameters, which affect different stages of the binary evolution. Fortunately, a very limited number of parameters has effect on the compact binary merging rate. ... The most important (and practically unique) parameter changing the galactic binary NS merging rate is the distribution of an additional (kick) velocity imparted to NS at birth. ...

Еще в разделе: (Показать все результаты (>517) - xray.sai.msu.ru/ )

• The Model
• Initial parameters of compact stars
• Initial Distributions of Binary Parameters

... This section will deal with obtaining photons within specified regions of an image. Available regions are: Annulus Box Circle Ellipse Field -- entire field Irregular region based on intensity of map... i.e. region defined by contour levels. ... The imcnts task in the xray-spatial package sums the source and backg