... (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) *** ...

I was wondering what conditions should be met to have the "darkest" sky .. ... Upon the above publication of the Southern Galactic hemisphere, TunГ Tezel started seeking opportunities to create the Northern counterpart image. ... So, the initial quest of having the darkest possible sky have delivered us these two all-sky images of the two galactic hemispheres as seen from Planet Earth. Zoomable and 'full-screenable' fisheye view of the "darkest sky" Southern Galactic Hemisphere image. ...

... Bad Astronomy . Misconceptions . ... Bad Astronomy : The Moon only shows one face to us because it is not rotating. Better astronomy : The Moon only shows one face because it is rotating, once every time it revolves around the Earth. ... Place the Moon model on the table about 30 centimeters (one foot) away with the X facing the Earth model. ... You'll see that to keep the X facing the Earth model, you have to rotate the Moon model as it goes around the Earth model . ... 2008 Phil Plait. ...

A classical effect which I found kind of an easy way of doing with the gimp. There's a filter in PS called ``Wind'' which would make this a lot easier.. Actually there should be a lot more randomized effects for the Gimp. ... I used a 70pt zaleskicaps in a 250x100RGB with antialias 3 . ... Turn it 90 degrees and apply some shift and spread to it and turn it back. I used Spread at 5 and Shift at 15, and did that twice . ... Now a little Ripple and Shifting and not to forget Spreading . ...

... 23a. The Centrifugal Force . ... 24a.The Rotating Earth . ... Sunlight Earth . ... One important rotating frame is the surface of the Earth, rotating with a period of about 24 hours--more accurately, 23 hrs 56.07 min or 86164 seconds. ... To derive the centrifugal acceleration on the equator (i.e. the force in Newtons on one gram mass, rotating with the Earth), we calculate in meters and seconds . ... Effective gravity on the equator is reduced by the rotation, but only by about 1/3 of a percent . ...

... Doppler effect . Apply to both rotational and orbital periods . Any line-of-sight acceleration contributes to . ... Important for many msp ages and B fields . Differential Galactic rotation . Vertical acceleration in Galactic potential . Accelerations in Globular cluster potentials . Changes in apparent semi-major axis . Gravitational lensing in binaries . Gravitational redshift . ... Thu Dec 19 15:15:11 GMT 1996 ...

... Execute) Back Status Jacks Limits # ListCtrl $ Caption =Jack Limits: $ ColumnName0 = Name $ ColumnName1 =Status $ StructName1 =Limits.Actual Back Drive Status # ListCtrl $ Caption =Drive Status: $ ColumnName0 = Name $ ColumnName1 =Status $ StructName1 =Jacks Alarms.Actual Back Positions # ListCtrl $ Caption =Jack Positions: $ ColumnName0 = Name $ ColumnName1 =Position $ ...

Next: ZGSC (Compressed GSC) and XSKYMAP . ... This is a preliminary report on an investigation of the quality and properties of plates digitized during creation of the Guide Star Catalog (GSC). The results will be vital for reclassifying GSC objects. ... Many objects are measured on more than one plate, and thus have multiple catalog entries. ... Among the shortcomings of the GSC are: biased magnitudes and incorrect classifications for certain objects, presence of artifact objects. ...

... Posts tagged ?effective area? ... highlighting some equation that is widely used in astrophysics or astrostatistics. ... Tags: ARF , effective area , EotW , Equation , Equation of the Week , LRF , point spread function , PSF , response matrix , RMF , source . ... Comment . ... Entries RSS . Comments RSS . ... vlk on [MADS] Parallel Coordinates . upvc windows on [MADS] Parallel Coordinates . ... Alfred Inselberg on [MADS] Parallel Coordinates . ... Entries (RSS) and Comments (RSS) . ...

Authors: V.A. Marsakov , Yu.G. Shevelev , . Journal: 1988, Astron Zh. ... Absolute magnitudes, metallicities, effective temperatures, surface gravities, distances, and tangential velocities are calculated for 5498 F stars with homogeneous data on uvby photometry and proper motion, and placed within 80 pc from the Sun. Components of space velocities, eccentricities of galactic orbits, perigalactic and apogalactic distances, and maximal remotness from galactic plane are presented for 1787 stars. ...

... Electric field from solar wind/IMF system is mapped (either directly or via magnetosphere ) to the high-latitude ionosphere , creating horizontal E в B plasma drift called convection. ... In the simplest case, occurring during southward IMF, the F-region plasma flows antisunward over the polar caps (open field lines, i.e., solar wind regime), and returns sunward within the auroral oval (closed field lines, i.e., magnetospheric regime). ... Eather, R. H., Polar cusp dynamics, J. Geophys. ...

Changing a World . What did the students learn from all this? ... The students found this unsatisfactory -- some of them would not be able to fit another astronomy class into their schedules, but they wanted to know about our planetary neighbors, and this project gave them the opportunity to find out without spending valuable class time on the subject. ... The students also learned to learn for themselves, perhaps one of the most important milestones during formal education. ...

Spectropolarimetry and modeling of Galactic Wolf-Rayet star WR156 O LGA M A RY E VA Special Astrophysical Observatory RAS; olga.maryeva@gmail.com For the first time spectropolarimetric observations of Wolf-Rayet star WR156 (WN8h sub-class) were conducted. ... This polarization is, most probably, has an interstellar origin, as its magnitude and orientation are similar to the ones of field stars. ... By its parameters WR156 is similar to other WN8h stars, displaying the line effect. ...

... Subject and Problems of Stellar Astronomy. ... Plane of Galaxy, Methods of Its Location Determination. ... Stars Distances. ... Other Methods of Stars Distances Determination. ... Tangential Velocities, Their Determination by Self-Motions. ... Determination of Solar Apex and Spatial Velocity by Radial and Spatial Velocities of Stars. ... Features of Orientation and Parameters of Peculiar Stellar Velocities Ellipsoid. ... General and Selective Light Absorption in Galaxy. ... Darc Clouds in Galaxy. ...

... Impact on source motion in Galactic coordinate system is given by Kovalevsky (2003), Malkin (2011) l cos b = -A sin l, b = -A cos l sin b, where A = R0 02 /c is the galactocentric acceleration called hereafter the GA constant. ... We just have to return to the traditional many-centuries-old astrometric practice of modelling the position of a celestial object as a linear trend with two parameters: the position at the initial (conventional) epoch and the apparent (proper) motion. ... 2011). ...

... Space flight . ... Simulators . ... Space camp . Space Hotel . ... Virtual reality-based stand for ISS crew training is used for cosmonauts pre-training preparation at different stages of training for the space flight. ... At present cosmonauts and astronauts can work both with the SM and FGB images independently and having them in mated state. ... Info: Industry news On-line Data Company ATLAS news Events We in press Contact . Copyright 2000-2016 ATLAS Aerospace . ...

... The Cambridge Low Frequency Synthesis Telescope (CLFST) is currently being used to undertake a systematic survey of the Galactic plane at a frequency of 151 MHz. ... The CLFST . ... The purpose of a 151 MHz Galactic plane survey . ... Observations and data reduction . ... The usefulness of a 151 MHz survey is that at low frequencies synchrotron emitters are much more prominent than thermal emitters, so a low frequency survey is ideal to look for Galactic synchrotron emitters, e.g. pulsars and SNRs. ...

... Optical images with XRT contours . ... DSS . spec . ... SDSS . ... The X-ray contours are computed on XRT images in the 0.5-2 keV band with the Chandra Ciao software, and the contours are drawn at respectively 5, 9, 15, 25, 50, 90, 150 and 300 sigma, where sigma is given by the local background level. ... In this case, the size of the image is accordingly smaller. For all the SXCS sources that are not imaged by the SDSS, we make use of the SAO Digitized Sky Survey Server (DSS) optical images. ...

... solve : find optimum fit in a grid of model spectra . ... It initiates an optimisation by starting with a grid of theoretical spectra, defined by model or read_grid , a set of starting parameters and an observed spectrum. ... The parameters to be optimised include: T eff , log g , n A , v sin i , v rad being effective temperature, surface gravity, an abundance variable, rotation velocity and radial velocity for one or two stars, and R 2 / R 1 being the relative radius of the second star, if present....

. The two W. M. Keck Telescopes on Mauna Kea, Hawaii, observing the galactic center. The lasers are used to create an artificial star in EarthтАЩs upper atmosphere, which is then used to measure the blurring effects of the lower atmosphere (the effect that makes the stars twinkle in the night sky). The blurring gets corrected in real time with the help of a deformable mirror. This is the adaptive optics technique. // Credit: Ethan Tweedie