... About ATNF overview . ... Australia Telescope Steering Committee . ... LMC H II Region Luminosities versus . Observed Ionizing Stars . ... These values are compared to the observed H II region luminosities, yielding an estimate for the mean fraction of H-ionizing photons that escape the local nebulae in this sample. We formally estimate that, overall, 0-51% of the ionizing radiation escapes the local H II regions and is available to ionize the warm, ionized medium in the LMC. ...

Both observed and synthetic spectra are available to synphot users. ... The first three columns contain, respectively, the catalog reference, the type of objects, and whether the spectra are models or observed. Column 4 provides the sample syntax for accessing these spectra: in some cases, a filename must be provided, and in others, use of the synphot function cat or icat can be used. ... Model or Observed . ... Stars . Observed . ... Pickles 1998 . ... Deprecated/ Use Pickles 1998 instead . ...

Peremennye Zvezdy ( Variable Stars ) 26 , No. ... Moscow 119992, Russia . ... 84/32, Moscow 117997, Russia . ... Our CCD observations compared to times of minima derived from the archival photographic plates and from the NSVS and ASAS-3 data clearly show that the orbital period of the system is variable. ... The phased light curve for the light elements . ... CCD, Moscow . ... and for the current linear light elements (in excellent agreement with the NSVS, ASAS, and our CCD observations): . ...

... Next: INTRODUCTION to Spectral Line . ... INTRODUCTION to Spectral Line Observing at AO . ... Run Correlator . ... Observing the Old-Fashioned Way Gui-Free . A. Gui-Free Observing: Spectral-Line Checklist . ... C. Gui-Free Observing: Preparation of Observing Files . ... C.2 The General Set-Up File . ... General Set-up File . First Example - a9999a.sls Spectral Line Set-up file. Second Example - a9999b.sls spectral line set-up file. ... Fourth Example - a9999d.sls spectral line set-up file. ...

Next: The Newton--Raphson Method. Up: Fitting of Data Previous: Fitting of Data . ... In a linear problem, if the errors on the observations have a gaussian distribution, the ``Maximum Likelihood Principle'' gives you the ``best estimate'' of the parameters as the solution of the so-called ``Least Squares Minimization'' that follows: . ... A certain number of numerical methods have been developed to solve the non--linear least squares problem, four have so far been implemented in MIDAS. ...

... Observatory . ... Science . ... Science Users Information > Science Publications > Science Announcements > MUSE Commissioning Data Available . ... Observing Facilities . ... Observing with ESO Telescopes . ... MUSE raw data from the first two commissioning runs at VLT UT4 in February and April-May 2014 have now been released . ... The data illustrate well the power of MUSE for a variety of science targets and can be used to plan future programmes, and, in some cases, for scientific work. ...

... Abstract: We present Monte Carlo radiative transfer simulations for spiral galaxies modelled as a stellar disk and a two-phase clumpy dust distribution. ... As a general result, clumpy models are less opaque than the corresponding homogeneous models. ... 0.00 0.15 0.50 0.1 0.5 1.0 2.0 5.0 10.0 0.25 X . ... We have also produced several homogeneous models, to compare to the clumpy models. ... Homogeneous and clumpy models with the same tauV have the same dust mass. ...

... Exposure Time Calculator (ETC) . ... ESO - Public Surveys . ... the recommended values to use for DIT, . ... Detector on-chip integration (DIT): seconds. to your chosen value - a separate page gives recommended values to use for DIT - for modes 1 and 2 below you may wish to start with the maximum recommended values as these will minimize the effect of read noise (a total object exposure of Y secs with DIT=X secs will produce Y/X lots of read noise) and give you a lower limit on the time needed. ...

Next: Acknowledgements Up: Evolution of the double Previous: Effect of sources evolution . Our calculations show that if GRB indeed are due to binary neutron star coalescence, they can potentially constrain the cosmological parameters as well as the early star formation history. ... 1994). ... If the cosmological origin of GRB will be confirmed, the - and test could be used to independently estimating the cosmological parameters and tracing star formation history in galaxies. ...

... Since 2011 our observatory is a member of GLORIA (GLObal Robotic telescopes Intelligent Array for e-Science) project - wide international collaboration of 13 scientific institutions from 8 countries aiming at opening public access to robotic telescopes, as well as propagating astronomy in general. The GLORIA Project offers Internet users the possibility of studying the sky from professional observatories. ... The experiments are available at the users site of GLORIA. ... About GLORIA . ...

Text of these problems is available also in other languages : . ... What can one see in the Moon's sky more often - the Sun or the Earth? ... There are about of 250 millions of stars in the elliptical galaxy M32 (a satellite of Andromeda galaxy). ... The masses of Capella's components. ... You are proposed to estimate the masses of Capella's components, using our observational data. ... A galaxy's mass. ... Estimate the mass of FGC 1908 and compare it to the mass of our galaxy. ...

... Bojan Nikolic web pages (r. 329) . ... We present a Bayesian approach to calculating the coefficients that convert the outputs of ALMA 183 GHz water-vapour radiometers into estimates of path fluctuations that can be used to correct the observed interferometric visibilities. ... Inference of Coefficients for Use in Phase Correction . ... Simulating Atmospheric Phase Errors, Phase Correction and the Impact on ALMA Science . ... Copyright 2005 -- 2016, Bojan Nikolic feedback welcome ...

... Site User's Guide (revised January 2015) . General Observing Information . ... An area map is available, as well as detailed directions from regional airports. ... APO does not recommend using GPS for directions to the site; please use the written directions below. ... APO/SDSS/NMSU Purchasing, Travel, Receiving, and Shipping Procedures . APO Site Safety Plan, V2.31 (current); APO Sprinkler and Shutter Procedures (pdf) . ... Roads to APO are all paved but are subject to heavy snow and ice. ...

... Here some data observed on the 6m telescope with IFP installed in the OLD focal reducer are presented. ... Mkn 3: velocity field . ... NGC 5252: [OIII] image . ... NGC 5252 was observed 23 Feb. 1998 in the [OIII]5007 emission line with CCD TK1024 as detector. ... We observed the ionized gas velocity fields of the spiral galaxies with two purpose. ... Restored velocity field of NGC 157 in the reference frame rotating with the pattern speed overlaid on the Ha image of the galaxy . ... NGC 4100 . ...

True Color Image Gallery: Galactic SNR | Magellanic Cloud SNR . ... Radio Images Page . ... Exposure uf . ... 2834 . ... Exposure uf Exposure time of unfiltered event file . Exposure f Exposure time of filtered event file . Click left mouse button on hyperlink below to download file . ... Event 2 FITS File . ... AUX file . ... Power law fit to entire remnant. see fit detail page for more about the fit. see chandra spectrum page for region used. ... True Color Image . ... 2.0" . ...

... The hotter the gas, the faster they move, and the more energy each of them holds. The free ions and electrons in a plasma behave the same way. Knowing the temperature of the high atmosphere of Earth, or that of the Sun, we can calculate energies expected of ions and electrons found there. However, ions and electrons actually observed in space are often much , much more energetic, and may move at a respectable fraction of the velocity of light (300,000 km/sec or 186,000 miles/sec). ...

Astronomers at Armagh Observatory observed the partial eclipse of the Sun on 29 March under unusually good conditions. ... The images, taken by astronomer Miruna Popescu, shows the eclipse as seen from the Armagh Observatory at around 11:30 (Summer Time) on 29th March, and the way it was observed by astronomer Apostolos Christou with a small portable telescope equipped with a filter to protect against the Sun's dangerous radiation. ... For more images from Armagh see: Miruna Popescu's Pages . ...

. Общая Астрономическая Конференция > Товары для астрономов > Полезное для астрономии > Книга Nebulae and how to observe them . PDA . Просмотр полной версии : Книга Nebulae and how to observe them . leon . 02.11.2008, 10:14 . http://www.filefactory.com/file/967748/n/Steven_R_Coe_-_Nebulae_-_and_How_to_Observe_Them_Astronomy_Astronomical_as tro_books_pdf_pdf . vBulletin v3.8.4, Copyright 2000-2016, Jelsoft Enterprises Ltd. Перевод: zCarot

... The following charts/text are intended as tools for monitoring the Type Ia supernovae ( SNe ) event visually or photographically (utilizing telescope equipped CCD equipment).The files include: A replication of The Type Ia SNe , V- magnitude (with data point checks from other cited references)and color index (B-V) templete (to indicate a general color-related trend of the type Ia ... I believe this might help alleviate some of the problems involving the making of acceptable amateur light curves...