... HST Phase II Proposal Instructions for Cycle 20 > Chapter 4: Solar System Targets > 4.9 Flux Data [Flux and Other_Fluxes] . ... Proposers should refer to Section 3.9 on page 48 for instructions and guidelines on how to provide flux data for their targets. The flux data must be given in the format and units shown in Table 4.13: Formats for Specification of Target Flux Data . ... B-V = 0.86 +/? 0.2 . ... Background Surface Bright ness 2 . ... erg/(cm 2 sec е) . ... erg/(cm 2 sec е arcsec 2 ) . ...

Next: Information on planets Up: Practical loading and calibration Previous: Bandpass and antenna gain . The best task to correct the flux scale of an observation is mfboot - mfboot performs an analagous function to gpboot . ... It works by scaling the antenna gain table so that the flux density scale of the observed data agrees with some model. ... Task mfboot can also be used when bootstrapping from a point source. ... MFBOOT . ... Select flux density calibrator. ...

Next: *upspecrdf, downspecrdf* - Transform Up: Spectral Analysis Previous: *grid_plot* - Plot Results . The conversion of count rate to flux depends on the intrinsic spectrum of the source, so xflux must be used in conjunction with fit . Fit generates a table of the best fit intrinsic spectrum ( _int.tab extension). xflux uses this table to calculate either the integrated flux between two energy limits or the flux density at a specific energy. ... This produces ``..._obs.tab'' file. ...

Next: Airmass Calculation Up: Flux Calibration Previous: Flux Calibration . To calibrate the chromatic response, observations of a standard star (preferably more than one) are needed, for which the absolute fluxes are known. The spectral response curve of the instrument can then be determined with the command RESPONSE/LONG , and absolute fluxes for the objects of interest are obtained with CALIBRATE/FLUX . ...

XMM-Newton Science Analysis System . ... Meta Index / Home Page AB magnitudes (see Oke, J.B. 1974, ApJS, 27, 21) and fluxes are given for each filter. In the header of the table the keywords ABM0X, ABF0X and E2JYX are given for each filter (where X is a filter). The keywords give the AB magnitude zero-point, the conversion factor from count-rate to AB flux and the conversion factor from flux to Janskys, respectively. ... XMM-Newton SOC/SSC -- 2007-07-09 ...

... Data Handling and Products > Data Reduction FAQ > The spectrum of my MOS flux standard star is shifted in wavelength by several pixels. Why is that and how can I correct for it? ... Observing with ESO Telescopes . ... The shift of the flux standard spectrum is caused by a combination of bad centering within the slit and possible wavelength calibration issues. To align the spectrum to the tabulated flux, use the parameter --resp_shift in vmmosscience when determining the response curve. ...

Distribution of the analyzed SEPs with different >100 MeV proton fluxes ( J 100 ) at the microwave flux density plane ' S 9 vs. ... 1) General correspondence takes place between intensities of microwave bursts and proton fluxes - J 100 increases when S 9 and S 15 rise. ... 3) Powerful microwave bursts ( S 9 , S 15 >3000-10000 sfu ) with hard radio spectra ( S 9 < S 15 ) correspond to majority of powerful proton fluxes ( J 100 >10 pfu ). ...

... Galactic Cirrus (Integrated Flux Nebula / IFN) - газопылевая туманность MW 3 Volcano Nebula в созвездии Большой Медведицы (Ursa Major) .. ... Просмотр полной версии : Galactic Cirrus (Integrated Flux Nebula / IFN) - газопылевая туманность MW 3 Volcano Nebula в созвездии Большой Медведицы (Ursa Major) .. ... Galactic Cirrus (Integrated Flux Nebula / IFN) MW 3 Volcano Nebula .: ... Galactic Cirrus - гигантские газопылевые облачные агломерации (interstellar cloud of dust), часть межзвездной среды .. ...

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... Credit Copyright: Jordi Gallego Explanation: Large galaxies and faint nebula highlight this deep image of the M81 Group of galaxies. ... M81 is gravitationally interacting with M82 just below it, a big galaxy with an unusual halo of filamentary red-glowing gas. ... This whole galaxy menagerie is seen through the faint nebular glow of the Integrated Flux Nebula , a little studied complex of diffuse gas and dust clouds in our Milky Way Galaxy . ... M81 versus M82 . ... Galaxy Wars: M81 versus M82 . ...

... 2008 May 12 . The M81 Galaxy Group Through the Integrated Flux Nebula . ... Explanation: Large galaxies and faint nebulae highlight this deep image of the M81 Group of galaxies. ... Around the image many other galaxies from the M81 Group of galaxies can be seen. ... This whole galaxy menagerie is seen through the faint glow of an Integrated Flux Nebula , a little studied complex of diffuse gas and dust clouds in our Milky Way Galaxy . ... About APOD | ...

СЕЗОННЫЕ ВАРИАЦИИ ПОТОКА НЕЙТРОНОВ В ОБЛАСТИ ПОЛЯРНЫХ ШАПОК МАРСА ПО ДАННЫМ РОССИЙСКОГО ПРИБОРА ХЕНД ПРОЕКТА НАСА “2001 MARS ODYSSEY” . ... Лунно-планетная лаборатория, Университет Аризоны, Тусан, Аризона, США . Лаборатория реактивного движения, Пасадена, Калифорния, США . ... Массачусетский технологический институт, США . ... Прибор ХЕНД установлен на борту космического аппарата НАСА “2001 Mars Odyssey” и представляет собой инструмент для измерения потока нейтронов с энергиями выше 1 эВ. ...

PENTICTON SOLAR RADIO FLUX VALUES (from SGD Explanation of Data Reports) Daily Solar Flux Values - Penticton -- Daily measurements of the integrated emission from the solar disc at 2800MHz (10.7cm wavelength) have been made by the National Research Council of Canada since 1947. ... The data are tabulated in two forms: the "observed flux" (S), and the "adjusted flux" (Sa). ... The "observed flux" values are useful in ionospheric physics and other terrestrial consequences of solar activity. ...

... Updates to HST Standard-Star Fluxes . ... These data are in an STScI data base named CRCALSPEC and have been divided into two categories to help the user understand the origin and accuracy of these flux distributions. ... 1990, ApJS, 73, 413) and Oke (1990, AJ, 99, 1621) spectra are available. Oke (1990) used the DoubleSpectrograph on the 5-m Hale Telescope to obtain these spectra for HST calibration; and these data are identified in the HST data bases by the keyword OBSMODE=OKE DBSP. ...

... Tonight's Sky . ... Observing . ... Sky this Month . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Observing Podcasts . ... Astronomy for Kids . ... Galaxies and the integrated flux nebula in Ursa Major . ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

... The Galactic low-mass X-ray binary GS 2023+338 was discovered during the burst on May 22, 1989 with the Japanise satellite Ginga (aka Galaxy). The flux reached 17 crabs (this unit of flux measurement is an bright X-ray source, Crab Nebula) at 10-35 keV. ... No other radio telescope worldwide carried out multi-frequency measurements. ... Upon 14 days the radio flux fell below the detection level at the RATAN-600 in relation to the decrease of the X-ray flux. ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... The formation process of a MBF and the associated BP (No. 1 in Table 1), which is formed by bipolar emergence. The top row gives the BP region as seen in AIA 193 at the indicated time. ... The bottom row shows the normalised AIA 193 lightcurve (left), and the positive (middle) and negative (right) magnetic fluxes obtained in the blue and yellow boxes marked in the top two rows. ...

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def DER_SNR ( flux ): # ===================================================================================== DESCRIPTION This function computes the signal to noise ratio DER_SNR following the definition set forth by the Spectral Container Working Group of ST-ECF , MAST and CADC. signal = median ( flux ) noise = 1.482602 / sqrt(6) median ( abs (2 flux _i - flux _i-2 - flux _i+2)) snr = ...

. Accurate flux calibration is required to derive to many intrinsic properties of the galaxy like star formation rate. It is also required to compare the data from different instruments. In this FoF I will summarise some of the issues (and hopefully their solutions) encountered while flux calibrating data from DEIMOS spectrograph on KECK.