As it is in Ephemerides task, O–C can be calculated with different accuracy. ... It presents three modes of accuracy. One can calculate position of a minor planet by the formulae of elliptic motion starting from the fundamental set of elements for given minor planet. ... Also there is possibility to calculate positions taking into account perturbations from different sets of perturbing bodies by numerical integration ( Integration mode). ... Accuracy of integration is equal to 10**(–10) AU. ...

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• ENGAMPLE
• AY2016 (contents)
• AY2012 (contents)

... Format of the orbital elements | Estimation of the extrapolation errors | Version 1" of the orbital elements collection, determined by KIAM during flight and used for operations planning . Version 2" of the of the orbital elements collection, modified by IKI during flight and recommended for the orbital calculations during scientific data processing . ... Three kinds of the INTERBALL Auroral probe (IB_AUR) orbital elements' collections are presented here. ... IKI RAN | SSC IKI RAN | ...

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• About modification of the INTERBALL orbital elements
• The INTERBALL Tail PROBE orbital elements
• The INTERBALL Auroral PROBE orbital elements

... HST Phase II Proposal Instructions for Cycle 20 > Chapter 10: Fine Guidance Sensors (FGS) > 10.3 Mode = TRANSConfig = FGS . ... This observing strategy is discussed in the FGS Instrument Handbook . ... STEP-SIZE values of 0.6 or 1.0 are recommended (see the FGS Instrument Handbook ). ... Enter the ORIENT ation visit-level Special Requirement (see ORIENTation <angle1> TO <angle2> ) if the arrangement of the target or reference stars requires a particular orientation of the FGS field of view. ...

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• Mode = POSConfig = FGS
• CCD Position and Orientation on Sky
• Fine Guidance Sensor Instrument Handbook

... The routine returns the offset (deltaX, deltaY) from the linear grid position for a specified detector location. ... the distortion (deltaX, deltaY) at the detector location (rawX, rawY) is derived from the distortion map stored in the extension FILTER-FilterId (e.g. FILTER-U, FILTER-V, FILTER-GRISM1 etc.) ... interpolate the extracted distortion points (RAWX_OFF ,RAWY_OFF ) and calculate the distortion (deltaX,deltaY) at the requested postion (rawX, rawY) . ... deltaX, deltaY . ...

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• Generation from In-Orbit Data
• Description
• Different types of detector map

... The HST uses an onboard model of its orbit to perform in real-time various control functions relating to spacecraft operations and observation support. ... New coefficients for the ephemeris are updated every other day, and are archived as FITS keywords for each HST observation data set. Using these coefficients,an observer can perform a variety of calibration and characterization calculations relating to the orbital position and velocity of the telescope. ...

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• ISDC Data Access Layer

... To access the measures do the following. ... Each of them can be either a scalar quantity with a scalar or vector for its actual value (see the following example):: from pyrap.quanta import quantity dm.epoch('utc','today') # note that your value will be different {'m0': {'unit': 'd', ' value ': 55147.912709756973}, 'refer': 'UTC', 'type': 'epoch'} dm.direction(' j2000 ','5h20m','-30.2deg') {'m0': {'unit': ' rad ', ' value ': 1.3962634015954634}, 'm1': {'unit': ' ...

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• http://www.atnf.csiro.au/whats_on/workshops/synthesis2003/talks/antenna.pdf
• casacore: casa::MeasFrame Class Reference
• Event-driven Tasks and Graphical User Interfaces

... 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. ...

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lbw gain and turret position . ... A 2 deg turret step (2*.75= 1.5 arc minute on the sky) was used (about .5 beam widths). ... The green, blue, and dark red lines are all at about the same gain so the measured best position is at least .57 degrees above the surveyed position (it probably wouldn't hurt to redo this since we didn't go over the other side of the gain vs turret position curve). processing:x101/020401/doitsbh.pro The cband beam width at 5 Ghz is about 60 asecs. ... step Used . ...

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• http://www.naic.edu/~phil/ter/terfoc.html
• http://www.naic.edu/~astro/sdss7/talks/Phased_Array_Feeds.pdf
• rotaPlatToSky

The beam pattern and the polarization characteristics . of the radio telescope RATAN-600 . The Mueller matrix elements was computed via formulas [1]: . ... The BP were computed by the aperture method, proceeding from the fild distribution in the aperture of the primary mirror. The components of the main and cross-polarization components of the electric field in the vertical aperture of the primary mirror was computed in Frenel diffraction approximation. ...

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• di_eks
• Instrumentation
• Determination of atmospheric parameters and calculation of chemical composition

... For given geographical longitude and time zone show the current data and time, Universal data and time, current local star time. ... Accept 10 different data formats (data&time, data with decimal day of month, data with decimal day of year, decimal year, some Julian dates), calculate from any formate to others, show day of week. Current data and time direct insertion function is exists. ... Calculate angular distance between two points at the sky by its equatorial coordinates. ...

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Next: *.imh and *.qp Extensions Up: IRAF/PROS Files Previous: IRAF Image Arrays . The x-ray data are stored in QPOE files (Quick Position-Ordered Events, *.qp ) rather than image arrays. ... Note that, unlike IRAF images, QPOE files have no associated header file, and are always stored in the current directory, unless explicitly specified otherwise. Non-PROS IRAF tasks can also access QPOE data files in place of image arrays. ... rp110590.qp[pi=2:30] . ... The ROSAT PSPC qp file images are . ...

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• The AstroStat Slog light curve
• The AstroStat Slog Blog Archive Open and Shut [Equation of the Week]
• The AstroStat Slog Blog Archive Differential Emission Measure [Eqn]

Contents] [Prev page] [Next page] [Index] . Navigator 4 from Netscape, which is part of the Communicator product suite, includes three new areas of functionality that taken together give you Dynamic HTML. The three components of Dynamic HTML are style sheets, content positioning, and downloadable fonts. Used together, these three components give you greater control over the appearance, layout, and behavior of your web pages. ... Introducing Downloadable Fonts . ...

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• Long description for example illustrating positioning with respect to a
• Long description illustrating absolute positioning with respect to the initial
• Long description for example illustrating absolute positioning

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. ...

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• Kepler's Second Law
• Corrected Geomagnetic Coordinates
• Trigonometry beyond 90 degrees

WDC-A Digital Exchange Format for One-Minute Geomagnetic Data (Update August 1993) 1. The logical record length is 400 coded characters containing header information, blank spaces, and data for one element for one hour. ... Each logical record contains header information and data in the following format: North polar distance, longitude, year, month, day, hour, element, observatory code, blank spaces, 60 data values, and an hourly mean. ... ORG is the origin of the data. A = Alaska Chain. ...

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... The DIV element is used with the CLASS attribute to represent different kinds of containers, e.g. chapter, section, abstract, or appendix. ... An SGML identifier used as the target for hypertext links or for naming particular elements in associated style sheets. ... By convention, the class names are interpreted hierarchically, with the most general class on the left and the most specific on the right, where classes are separated by a period. ... ALIGN . ... move down until left margin is clear . ...

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• Font Style Elements
• Captions
• HTML Math

Institute of Applied Astronomy Russian Academy of Sciences Method of Determining the Orbits of the Small Bodies in the Solar System Based on an Exhaustive Search of Orbital Planes Dmitrii Vavilov, Yurii Medvedev Introduction to the problem: Let we have n 3 positional observations of a body: points in time ( = 1, ) , right ascensions , and declinations . ... Determination of the orbit using the Gauss method of determining orbital elements based on two heliocentric positions and points in time. ...

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• Pulkovo NEO Page: Ephemeris Support

We have designed the laboratory model of static Fourier spectrometer for onboard usage for spectral study of atmosphere and ionosphere. The gain of model is to simulate onboard FS which will not have any moving elements (all its optical elements will be mounted at fused quartz monolithic construction), to compare experimental results with theoretical estimations and to measure MTF of CCD array. ... This fact connected with low frequency response of CCD array due to small format of it. ...

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• Introduction to Astronomy
• Elements of osculating planetary orbits. Explanation for Computer Ephemeris.
• Contents of Computer Ephemeris for 2014 (DE200/LE200).

Stellarium 0.12.3 . ... Classes . ... gSatTEME Class Reference . Sat position and velocity predictions over TEME reference system. ... Set compute epoch for prediction. ... gVector љ . ... Get the TEME satellite position Vector. ... Get the Geographic satellite subpoint Vector calculated by the method compute SubPoint. ... gVector Satellite position vector meassured in Km. x: position[0] y: position[1] z: position[2] . ... gVector Satellite Velocity Vector measured in Km/s x: Vel[0] . ...

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• Stellarium: StelSkyPolygon Class Reference
• Stellarium: gSatWrapper Class Reference
• Stellarium: TextParams Struct Reference

... Q 12.649 0.523 0.342 -0.108 4444 -4.647 -4.582 "n6231_ 178" 16 53 48.63 -41 51 54.1 J2000.0 ! ... A few lines are then added to the top (see readme_asc2dxf for details) to produce input for asc2dxf :in.coo: n6231cp6.dxf slot line 2.00 43.00 9.00 43.00 point 9.773 19.026 n6231 _ 171 Q 12.649 11.236 57.382 n6231 _ 178 I 14.533 ... the output of this program is as follows :n6231cp6.dxf: 0 SECTION 2 ENTITIES 0 CIRCLE 8 1 62 3 10 43.00 20 43.00 30 0.000 40 43.00 0 ...

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• http://www.mso.anu.edu.au/pfrancis/ObsTech/optical_spectroscopy.pdf
• Observational Techniques: Units and Coordinates Notes
• Proposed Facility

... The axial support is provided by 78 air pistons. ... The transverse support is provided by 38 air pistons, supported by cantilevers from the mirror cell, that act on the mirror local center of gravity surface. ... The locations where the transverse mirror support forces should be applied to the mirror are listed in Table 1 and illustrated in Figure 1. ... Figure 1: CAD drawing showing the 2.5-m primary mirror and the locations of the transverse support posts (black) and axial pneumatic pistons (blue...

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• Tolerances
• Plug-plate coordinate system
• TUI:Telescope:Offset Types