... The alfa rotation angle was set to 0 degrees. ... Beam 0 was sampled more often than the others to get a better measure of the pointing offsets. ... Page 5: Pointing error. beam 2 had large za errors. ... Compute the change in the pointing error if the alfa rotation error was off by -5 to +5 degrees in .1 degree steps. ... Top: rms pointing error vs rotation angle offset. ... Red: Az rms pointing error . ... rotating by + 1.1 degrees reduces the non beam 0 rms from 13 to 12 asecs. rms Error asecs . ...

... There are two types of STIS target acquisition: ACQ and ACQ/PEAK; for more details on target acquisition, see STIS ISR 97-03. ... The first is an image of the target in the target acquisition sub-array (100 x 100 pixels for POINT sources, user-defined for DIFFUSE sources) based on the initial pointing (see Figure 23.1 a), image_raw.fits[sci,1]. ... To verify that the ACQ/PEAK worked, examine the flux values at each stage of the peakup (listed in the paper products or in the data file). ...

Sloan Digital Sky Survey Telescope Technical Note 19970527 Walter Siegmund . ... Pointing Error Budget . ... The interleaved strips and adjacent stripes overlap about 1 arc minute. ... However, a 2-D pointing accuracy of 3 arc seconds RMS leads to acceptibly uniform overlap and minimises the number of cases that require special handling (Table 3). ... A guide fiber bundle diameter of 16.5 arc seconds and a pointing accuracy of 3 arc sec RMS results in 99% initial success in acquiring guide stars. ...

... Meta Index / Home Page This section documents warnings and errors generated by this task (if any). ... The Keyword TIMEDEL should be present in the input file . ... corrective action: CONTENT keyword should be present in the input file header . ... Count rate errors negative . ... corrective action: Count rate errors must be positive . ... corrective action: TSTART keyword should be present in header of GTI file . ... corrective action: TSTOP keyword should be present in header of GTI file . ...

... User Guide ] Task: uvsfit Purpose: Fit point sources to a given vis file. ... You can reduce the data volume by averaging in frequency using the line parameter (apply bandpass first) or selecting a subset of the data. If you want to produce model or residual visibilities at full resolution for all the data, you can run UVSFIT again with all source parameters specified and fixed. ... Key: sspar This gives initial estimates of source spectral parameters. ... 1 The spectral term alpha1 is fixed. ...

polimplot -- Plot a polarization vector map . ... inpol = "" [name] . Input linear polarization image (in %) to plot. inpopa = "" [name] . Input image for position angle of linear polarization vectors (degrees). poi_err = "" [boolean] . ... Name of corresponding polarization position angle error image (degrees). ... This task is a flexible tool for plotting a polarization vector map from two images of the polarization and the position angle of the polarization vector. ...

polimplot -- Plot a polarization vector map . ... inpol = "" [name] . Input linear polarization image (in %) to plot. inpopa = "" [name] . Input image for position angle of linear polarization vectors (degrees). poi_err = "" [boolean] . ... Name of corresponding polarization position angle error image (degrees). ... This task is a flexible tool for plotting a polarization vector map from two images of the polarization and the position angle of the polarization vector. ...

Next: Reduction procedure Up: Extinction and transformation Previous: Strategy . Standard stars can be included in the extinction solution, if one is careful. The problem is that there are usually appreciable ``conformity errors'' due to mismatch between the instrumental and the standard passbands [ 16 ]. ... Thus, it is wrong to assume that the transformation between the instrumental system and the standard system is exact, even if there were no measurement error in either system [ 1 ]. ...

DIGITAL WDC EXCHANGE FORMAT . FOR OBSERVATORY 1.0 MINUTE VALUES 1. ... DATA-1 .. DATA-60 are 1-minute values of the given element for that hour. ... Typically, digital 1-minute values received by WDCs from organizations operating automatic magnetic observatory instruments are averages of more frequendy sampled values, e.g. 10-second point samples. ... If the method used to obtain 1-minute average values is important to a user, the WDC will assist in determining the exact procedure applied. ...

The examples of the errors. ... Observations with ordinary values of the "Mean error of single observation" Obj Code DT RA (O-C) DEC (O-C) mag z h m s " ° ' " " ° 3907 761 1998 08 24.383673 3 17 44.739 0.28 +30 46 00.84 -0.08 15.8 18 3907 761 1998 08 24.409133 3 17 46.152 0.28 +30 46 10.85 0.12 15.8 11 3907 761 1998 08 25.392523 3 18 40.107 0.33 +30 52 27.69 0.04 15.4 15 Total mean value of 3 observations 0.297±0.017 0.027±0.058 Mean error of single observation 0.029 0.101 COMMENT. ...

... This paper presents an overview of the CENTERFIT image centering algorithm library currently under development in the IRAF system. ... The centering algorithms employed by these applications must satisfy a wide range of efficiency and accuracy requirements, and function robustly on data sets spanning a broad wavelength, resolution, and signal-to-noise regime. This paper presents an overview of CENTERFIT, a library of 1-D and 2-D centering algorithms currently under development in the IRAF system. ...

... FIELD | ... static int . ... Field Detail static final int AREA . ... Constant Field Values . static final int MEAN . ... static final int STD_DEV . ... static final int MODE . ... static final int MIN_MAX . ... static final int CENTROID . ... static final int CENTER_OF_MASS . ... static final int PERIMETER . ... static final int LIMIT . ... static final int RECT . ... static final int LABELS . ... static final int ELLIPSE . ... static final int INVERT_Y . ... static final int CIRCULARITY . ...

Download Izmccd (~2.7 MB). ... for 1-5 bytes is number of a numbered minor planet, . ... Positions 1-80 file "mpcreportiz.txt" are similar to positions of file "mpcreport.txt". 83-95 – errors of unit weight, . ... If this tag is " 1 0 " , this record contains results of measurements of an image of object (approximation by "PSF"),  . ... 57-66 – error in X (pixels), for first star in a multicentric image, for subsequent it is error in (distance between first star in the image and this), . ...

... Revised by Tomas Rokicki to accept bounding boxes with no % space after the colon, 18 Jul 1990. ... Common uses include: % % \ epsfxsize % just leave the old value alone % 0pt % use the natural sizes % #1 % use the natural sizes % \hsize % scale to full width % 0.5#1 % scale to 50% of natural size % \ifnum#1 \hsize\hsize\ else #1\fi % smaller of natural , hsize % % If you want TeX to report the size of the figure (as a message % on your terminal when it processes each figure), say ...

... Description . Catalog . ... In the Catalog, we publish equatorial (ЮБ 2000 , ЮД 2000 ) and galactic (l,b) coordinates of cluster centers derived as the position of overdensity in 2MASS catalog (Koposov et al. ... Distances, color-excesses and ages are the mean-square values calculated using all available evaluations from different color-magnitude diagrams. ... There are individual pages for every cluster where all available plots and parameters are published. ... 2002). ...

... A comparison of the computed and experimental relations F max ( H), as well as comparison of drift scans of point sources across different horizontal cross-sections of the BP with the corresponding computed cross-sections were made. ... The drift scans of the point source 3С84 (H=87 o ) at the wavelength 7.6 cm across the horizontal cross-sections of the BP (black lines) and the computed horizontal cross-sections of the BP corresponding to them (red lines). ...

... 141570 Mendeleevo, Moscow region, Russia, VNIIFTRI. ... Values r and t are the functions of time , but value c is the function of time in less extent and value d almost does not depend on time Step-by-step We produce comparison by comparison standard in several steps: Comparison standard (Leica TDA 5005) and retroreflector are calibrate on national state standard of length; Transfer comparison ...

... Posts tagged ?measurement error? ... Measurement error is ? ... This is how statisticians seem to use it, essentially the bias term. ... Category: Astro , Cross-Cultural , Jargon , Stat , Uncertainty | 8 Comments . ... Algorithms arXiv Astro Bad AstroStat Bayesian CHASC Cross-Cultural Data Processing Fitting Frequentist Galaxies gamma-ray High-Energy Imaging Jargon Job Languages MC MCMC Meta Methods Misc News Nuggets Objects Optical Physics Quotes Spectral Stars Stat Timing Uncertainty X-ray . ...