Next: MOUNTING= 'FORK' Up: Horizon obstructions Previous: Getting the data . A character descriptor is needed to specify which of three possible formats is actually used: . MOUNTING : possible values are 'FORK' , 'GERMAN' , or 'ALTAZ' . ... In the case of an alt-azimuth mounting that displays only equatorial coordinates to the user, it would be more convenient to use the 'FORK' form of table, despite the actual mounting. ... The next three subsections describe these three forms. ...

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• Alphanumerics

On Systematic Differences in Individual Solutions and IERS Products Zinovy Malkin Institute of Applied Astronomy RAS, St. Petersburg, Russia 1 Present status Proper determination, modelling, and accounting for systematic differences between contributed series is of the great importance in compilation of the IERS products. ... Possible sources of systematic differences are: · Different reference systems (e.g. TRF, CRF, geopotential, time scale). ... 87 IERS Technical Note No. ...

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The efficiency of interaction of radiation with a particle and hence its optical properties depend on the particle chemical composition, size, shape, structure, etc. ... Particle size expressed in units of the wavelength of incident radiation, together with chemical composition, most strongly affects the optical properties of a scatterer. ... There are many methods to solve the light-scattering problem for a homogeneous spheroid (our survey of the light-scattering methods see here ). ...

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... Archives . ... If you do not mind the time predictor, it is hard to believe that this is a light curve, time dependent data. ... It?s hard to say this data set is designed for time series analysis apart from the complication in statistical inference due to measurement errors. How to design the statistical study with measurement errors, huge gaps in time, and unequal time intervals is complex and unexplored. ... The following is R output without measurement errors. ... Chandra Blog . ...

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• The AstroStat Slog F-test
• Project Tanagra
• The AstroStat Slog light curve

User has possibility to impose some restriction(s) on the Results of calculation. ... Possible set of restrictions depends on coordinates that were specified for planned run. ... The set of the quantities on which may be imposed restrictions in the next run are highlighted on marking Set restrictions . ... Dist. d(R.A.)/dt . ... Phase . ... To impose restriction on any quantity mark check box at the left of corresponding line and then click on the field where you want to introduce limitative value. ...

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Function: presentc Purpose: Logical function checking the 'presence' of a character argument in a subroutine/function call. ... Example: C SHELTRAN example to demonstrate use of presentc PROGRAM MAINF CHARACTER NULLC COMMON /NOARGC/ NULLC .. CALL SUB( NULLC ) .. ... CIF RETURN END C example to demonstrate use of presentc #include "gipsyc.h" #include "presentc.h" void sub( fchar arg ) { if (presentc_c( arg )) { ... } } main() { static fchar nullc = { NULL, 0 }; ... sub( nullc ); .. ...

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• http://www.atnf.csiro.au/computing/software/gipsy/tsk/getval.dc1
• http://www.atnf.csiro.au/computing/software/gipsy/sub/gdsd_rxxx.dc2
• GPLOT recipes

These observations are aimed at fully charactering FORS1 photometric system (UBVRI zero-points, color-terms and extinction coefficients) for the Tektronix 2048x2048 pixel CCD (24µm px) . To this aim, the two Landolt/Stetson photometric fields SA95 and SA101 will be observed on a number of epochs and at different airmasses during February and March 2007. ... SA101 . ... OBs for SA101 have to be observed during evenigh twilight (exceptions are expected for the second half of March) . ...

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• ESO - Why do the flats in my data have different exposure times and how do I
• Template Spectra

TUI supports the following offsets: . Object Arc offset by a given amount on the sky (i.e. along the arc of a great circle). ... Arc offsets are useful for moving a different portion of your object or a different nearby object onto the boresight . ... Object Arc XY this is identical to an Object offset except that it has been rotated to align along the instrument x-y axes. ... This is just like the Calibration XY offset, except that it is typically cleared when you slew to a new object. ...

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• Deforming Plug-plates
• Instrument Orientations and Offset Directions

... Future seminars . P a s t seminars . Seminar council . ... A.F. Zakharov (Institute of Theoretical and Experimental Physics) . ... Different regimes of gravitational lensing depend on masses of lens and correspond roughly an angular distance between images. If a gravitational lens has a typical stellar mass, this regime is named as microlensing because a typical angular distance between images is about microarcseconds in the case if sources and lenses are located at cosmological distances. ...

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• Trigonometry beyond 90 degrees
• Coordinates of the magnetic obsevatory polygons
• STDA files

... Single and Multi-dimensional Arrays . Strings . ... BEWARE: In C Array subscripts start at 0 and end one less than the array size. ... In C Strings are defined as arrays of characters. ... char name[50]; C has no string handling facilities built in and so the following are all illegal : . ... In order to allow variable length strings the 0 character is used to indicate the end of a string. ... Write a C program to read through an array of any type. ...

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• Fabry-Perot Interferometer: Data cubes
• Optimization of spectroscopic observations
• comedi_maxdata_is_chan_specific

Download Izmccd (~2.7 MB). ... a) a choice of the best mode of measurements of stars and objects ("Properties/Measurement"), . b) a choice of reference stars. ... 1) necessity of presence on an image of a plenty of stars (we recommend to apply this mode, if on the frame of reference stars is more 100) . ... Sx and Sy depend from residuals at all reference stars (reference stars are marked by blue color). ... These residuals are the image of the star a minus function of a profile for each pixel. ...

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... Does the time it takes different methods to create all the elements coincide with the universeт??s accepted age? ... Illinois Urbana-Champaign) Different kinds of stars create elements at different rates, all of which are consistent with the age of the universe. Get instant access to subscriber content on Astronomy.com! ... Registration is FREE and takes only a few seconds to complete. If you are already registered on Astronomy.com, please log in below. ...