... 22.Reference Frames . ... To derive the motion of a penny dropped inside an airliner moving at 600 miles/hr (about 1000 km/hr)--should we calculate it with respect to the interior of the airliner, or with respect to the ground? ... And if a similar penny is let go inside an orbiting spaceship--should its motion be calculated relative to the interior of the spaceship, or relative to the Earth outside? ... How do observations differ in the two frames--the airliner cabin and the Earth? ...

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... epiclccorr (epiclccorr-1.0.8) [?? ... epiclccorr will treat all these corrections individually, developing and designing specific algorithms to correct the Relative Corrections . GTIs correction will be calculated using the GTI extensions located in the time series file, if any. ... Exposure correction is the time inside each frame where the CCD is taking data correctly (no counting or MIP problems). ... This correction will be calculated using the Live Time and Frame Time values of each mode. ...

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• Algorithm
• A module containing routines to perform calculations relating to exposure...

The ESA/ESO Astronomy Exercise Series 2 . The Distance to Messier 100 as Determined by Cepheid Variable Stars . ... The small variations in distance to the individual Cepheid variable stars in the Cloud are negligible compared with the much larger distance to the SMC. ... In this way Cepheid variable stars can be used as one of the 'standard candles' in the Universe that act either as distance indicators themselves or can be used to calibrate (or set the zero point for) other distance indicators. ...

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... The experience of determination of the link between radio sources and dynamical reference frames is presented. To obtain this connection we used a series of very long baseline interferometry (VLBI) observations of the spacecraft Phobos-2 and angularly nearby quasars. ... The dynamical reference frame is determined by equator and equinox of these ephemerides. ... References . ... The relative orientation of the radio and dynamical reference frames can be described by a sequence of three rotations . ...

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• Some notes on Python relevant to ALMA and ALMA data reduction Bojan Nikolic web
• Computing dispersive atmospheric delay with AATM Bojan Nikolic web pages (r.

... Data . ... HST Overview . ... Cycle 24 Announcement . ... There are various sources of uncertainties when performing photometry with NICMOS that could affect the final accuracy of the measurements. In the following, several systematic uncertainties and special cases are mentioned. ... In summary, the accuracy of the absolute spectral energy distribution of NICMOS primary standards introduces a systematic uncertainty of about 2% - 3% in the absolute calibration of the filters. = 2.0 ?m) in NIC3. ...

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• Flat Field Files used for Relative Photometric Monitoring of NICMOS
• NIC3 F160W detector QE relative to the QE at 63 K
• NIC2 F110W detector QE relative to the QE at 63 K

The database contains references to the papers, data files and links to the Internet resources related to measurements and calculations of the optical constants in the wavelength interval from X-rays to radio domain. ... References to some useful books and reviews on the subject (e.g. the classical handbooks edited by E.D.Palik) and links to Internet collections of optical constants and personal WWW pages with related software were also placed in the database. You have arrived at our welcome page. ...

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• Rayleigh and Rayleigh-Gans-Stevenson approximations
• Rayleigh-Debye-Gans approximation (RDG)
• Database of Optical Properties -- Level: subsubpage

Next: ATCA Spectral Line Correlator Up: Spectral Line Data Reduction Previous: Spectral Line Data Reduction . Because of the Doppler effect, the observed frequency of a spectral line can be related to the radial velocity between the observer and the source. ... where v is the radial velocity, the observed frequency, the rest frequency, and c is the speed of light. ... Next: ATCA Spectral Line Correlator Up: Spectral Line Data Reduction Previous: Spectral Line Data Reduction Miriad manager . ...

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• Numerical simulations on the relative importance of starbursts and AGN in
• Integer Indices are 0-relative
• impos

... 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. ... time differentiation of space-by-time. ... to be described by differentiated forces. ... third-order space-by-time relation. ... understand the third-order space-by-time relation....

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• http://zebu.uoregon.edu/1998/ph301/l5.html
• http://zebu.uoregon.edu/2004/es399/hw3.html
• Astronomy Plus CCD Images of Galaxies

Subject of Celestial Mechanics. ... Differential Absolute Coordinates Equations of the Problem. ... General Integral of Non-Perturbed Motion. ... General Equation of Non-Perturbed Orbit. ... Other Integration Methods of Non-Perturbed Motion Differential Equations; Bine Equation for Case of Non-Perturbed Motion. ... Ellipsical Motion, Kepler Equation. ... Motion Differential Equations in Absolute Coordinates. ... Equation of System of Bodies Motion in Barycentric Coordinates, in Relative Coordinates. ...

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• Stellar Astronomy
• General Astrometry

... Electric field is a potential heat source for ionospheric particles (Rees, 1989). It is due to the fact that, under the action of an electric field, charged particles drift relative to one another and relative to neutral particles. ... This is called frictional heating. ... However, the effect of frictional/Joule heating of neutrals in the auroral electrojet region can lead to upward neutral wind in a region of high electron densities and strong electric fields (Winser et. al., ...

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• Concerning Steady State Corotation of the Io Plasma Torus
• Dispersion relation [Oulu]
• Basic definitions [Oulu]

... Science User Portal . ... ESO, the European Southern Observatory . ... Travel and Contacts . Travel to ESO Headquarters . ... Survey Telescopes . ... ESO Science Newsletter . ... The UVES measurement values of the relative change of the fine structure constant alpha from the sample of absorption systems, plotted as a function of the redshift and the corresponding look-back time. ... The horizontal long dashed lines show the area of the previous claim of variation of the fine structure constant. ...

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• Relative Changes with Redshift of the Fine Structure Constant | ESO United
• Relative Changes with Redshift of the Fine Structure Constant | ESO Australia
• Relative Changes with Redshift of the Fine Structure Constant | ESO Ireland

. You can define a file or directory by its location in relation to your current directory . The pathname is given as / (slash) separated list of the directories on the route to the file (or directory) from your current directory. A .. (dot dot) is used to represent the directory immediately above the current directory. In all shells except the Bourne shell, the ~ (tilde) character can be used as shorthand for the full pathname to your home directory. Examples . Did You Know? .

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• Examples of using relative pathnames
• UNIXhelp Glossary - "R"

... A document window is shown, with 8 lines (numbered 1 to 8), each 24px high. The text of the "outer" box (at the end of line 1, halfway into line 2, and halfway into line 3) is shifted upward 12px. The text of the "inner" box, thought shifted upward as well, has been relatively positioned so that it lies in its normal flow position at the end of line 2. ... The lines, as they appear in the image, contain: Start 1 Beginning of body contents. 2 of outer contents. Inner contents. ...

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• Dynamic HTML in Communicator
• Long description illustrating absolute positioning with respect to the initial
• Long description for example illustrating positioning with respect to a

UFO Forum Message . Forums: . ... Post . ... It Really Is Relative . ... Post Message | ... If you are on the Earth the moon does not rotate around its own axis. ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

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Federal Communications Commission (ix)(A) For a station authorized pursuant to § 73.215 or Sec. § 73.509, a showing that the root mean square (RMS) of the measured composite antenna pattern (encompassing both the horizontally and vertically polarized radiation components (in relative field)) is at least 85 percent of the RMS of the authorized composite directional antenna pattern (in relative field). ...

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• http://www.naic.edu/~phil/misc/azwindblown.html
• http://www.naic.edu/~phil/hardware/vertex/jonhagen/dc_torque.pdf
• http://www.naic.edu/~phil/pnt/azEncJump14oct03.html

... we show that the comparison between the calculated and observed numbers of the most ``fragile'' (from the point of view of the binary evolution scenario )   galactic binary types (such as X-ray low-mass X-ray binaries (LMXB), cataclysmic variables (CV),   Be-stars   with compact companions, relative number of visible binary radiopulsars   with normal and compact secondary components) impose certain constraints on the feasible initial ... Phenomenological Kick Velocity . ...

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• ADS Abstract Service Results
• #tex2html_wrap_inline12527#-#tex2html_wrap_inline12529# for Supernova...
• Discussion and conclusions

... (degrees) b2 galactic latitude (degrees) sgl supergalactic longitude (degrees) sgb supergalactic latitude (degrees) pgc PGC name *** alphabetical ** ident1 1st name (NGC,IC,UGC,ESO...) *** alphabetical ** pa position angle (N- E) in degrees typ morphological type (e.g. 'E','Sab','SBa','SO') *** alphabetical ** ring 'R' for Ring galaxies, otherwise ' ' (blank) *** alphabetical ** multiple 'M' for multiple galaxies, otherwise ' ' (blank) *** ...

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• Results and discussion
• SEARCH/ROMAFOT
• Documentation: LEDA: parameter: vvir

Start Data Acquisition - Selected Wavelengths - 22/Apr/2014 16:16:05.216 Observation Type - Target Images - 22/Apr/2014 16:16:05.231 22/Apr/2014 16:16:07.269 Begin Iteration #1 of 2 - Number of Frames : 17 - 22/Apr/2014 16:16:07.286 Filter : 6563 (Position 3) | ... Acquisition Time : 22/Apr/2014 16:16:07.422 | ... ExpTime (sec) : 0.030 | Stokes : I Filter : 6563 (Position 3) | ... Stokes : I Begin Iteration #2 of 2 - Number of Frames : 17 - 22/Apr/2014 16:16:10.023 Filter : 6563 (Position 3) | ...

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• http://www.arcetri.astro.it/~gcauzzi/SOLARNET/24_april_2014/ibis/TargetImages/20140424_175946/log_20140424_175946.txt
• http://www.arcetri.astro.it/~gcauzzi/SOLARNET/SN.2014.1.05/22Apr2014/spectral/GridImages/20140422_162807/log_20140422_162807.txt
• http://www.arcetri.astro.it/~gcauzzi/SOLARNET/SN.2014.1.05/22Apr2014/spectral/TargetImages/20140422_160644/log_20140422_160644.txt

The most up-to-date information related to atmos 3.0 are collected here due to constantly increasing interest to MASS/DIMM processing software... atmos 3.0 is still beta , so the latest version is 2.97.5 (there is also 2.98.x branch which absorbs new features) . ... M' line: . ... free seeing and its relative error . ... dimm seeing and its relative error (if dimm data are present, zeros otherwise) . ... dimm turbulence power and its relative error (if dimm data are present, zeros otherwise) . ...

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