... Stellar Evolution is driven entirely by the never ending battle between Pressure and Gravity . As imbalances are reached, the star is driven to find a new Energy source. ... Pressure and gravitational forces are equal, the star is stable and its core is sufficiently hot to fuse Hydrogen into Helium More about main sequence stars . ... The luminosity generated by the core fusion of Helium into Carbon is far greater than the shell luminosity associated with the fusion of Hydrogen into Helium. ...

... There are five standard data formats for HSP data. ... The datasets contain a standard header packet , a unique data log , and one to four science data files (and corresponding data quality files). ... HSP Data Files . ... Science data, digital sky .d2h/.d2d . ... Each of the science data files has a corresponding quality file that contains single-precision floating point values. ... The HSP calibration program, calhsp , generates the calibrated file for each corresponding raw science data file. ...

SAS home . ... List of SAS threads . OM data processing from A to Z is performed by two "chains": omichain and omfchain , for image and fast mode data respectively. ... Then a source detection algorithm is used to identify the sources present in the image. ... A final source list is obtained from all exposures and filters. ... If the user has PPS products from the processing of his/her observation, or from the XSA, then the first thing to do is to overlay the image source list onto the sky image. ...

This section of library contains information about "classic" Star Catalogs. ... For a Henry Draper Catalog 272149 stars have received a total of 531,211 identifications in 7 сatalogs: . 270456 - in Astrographic Catalogue ( "Carte du Ciel", 4M), . 251943 - in Guide Stars Catalog (GSC), . ... A file with information on the components of 1788 of multiple systems in catalog HDEC (3681 component, or a combination thereof, with 4054 recording). ... A file with information about 21971 variable stars. ...

... Science Users Information > Data Handling and Products > Data Reduction FAQ > Why are my spectra not flux calibrated, even though there are standard star observations in the data set? ... Observing with ESO Telescopes . ... ESO-MIDAS . ... Data Handling and Products . ... Data Pipelines and Calibrations . ... ESO Data . ... ESO Data Access Policy . ... If there is no reference table for the flux standard star no response curve is created and therefore the science data are not flux-calibrated. ...

Next: Reduction procedure Up: Extinction and transformation Previous: Strategy . Standard stars can be included in the extinction solution, if one is careful. The problem is that there are usually appreciable ``conformity errors'' due to mismatch between the instrumental and the standard passbands [ 16 ]. ... Thus, it is wrong to assume that the transformation between the instrumental system and the standard system is exact, even if there were no measurement error in either system [ 1 ]. ...

... Posts tagged ?standard processing? ... Tags: ADC , astro catalogs , Cast , CDF-S , Chandra , datasets , HEASARC , Penn State , reduced , standard processing , W3Browse . Category: Astro , Data Processing , Misc | ... Algorithms arXiv Astro Bad AstroStat Bayesian CHASC Cross-Cultural Data Processing Fitting Frequentist Galaxies gamma-ray High-Energy Imaging Jargon Job Languages MC MCMC Meta Methods Misc News Nuggets Objects Optical Physics Quotes Spectral Stars Stat Timing Uncertainty X-ray . ...

... The New 1997 IEEE Standards Products Catalog features the complete listing of standards publica-tions and services IEEE Standards offers, along with the information you need to place your order. ... Books and Other Products on Standards - contains a detailed listing of informative print and electronic publications relevant to standards and their implementation in areas of electrical engineering, electronics and computer technology. ... IEEE Standards Products Listing 22 . ... Power Electronics 41 . ...

STEP INTO THE BLUE - MEADE INSTRUMENTS PRODUCT GUIDE . ... Telescopes . LX850 Series . ... Superb optical performance coupled with time proven computerized pointing and tracking has made the LX200 ACF series a best-seller in the high-performance telescope class. ... LX70 Series . ... Meade's revolutionary LS LightSwitchтДв series of telescopes use advanced technologies to do what no other consumer telescopes have done before: take all the hassle out of using a telescope. ... LightBridge Series . ...

... The requirements for processing Chandra telemetry are very involved and complex. ... Standard Data Processing is accomplished by dozens of ``pipelines'' designed to process specific instrument data and/or generate a particular data product. ... The Automatic Processing system (AP) polls its input directories for raw telemetry and ephemeris data, pre-processes the telemetry, kicks off the processing pipelines at the appropriate times, provides the required input, and archives the output data products...

Next: Head Positions and Track Up: OBSOLETE SECTIONS Previous: Mark III Observations Contents . ... Mark II recording systems have been removed from most active VLBI stations and the main Mark II correlators are no longer operating. ... Below is an example of a simple Mark II schedule. ... OBSMODE = '6cm Mark~II Standard Setup' ! ... SRCFILE = sources.obs ! ... EXAMPLE: Setup file for Mark~II observations (1 channel) at 6cm. -------------------------------------------------------------------- ! ...

... NOTE x2192; WD x2192; PR x2192; REC x2192; IAU Standards (5 commission) . ... NOTE - публичная запись (не отражает взгляды IVOA) про идею, туториал, комментарий, x2026; Может развиться в WD, но совсем необязательно. ... PR (Proposed Recommendation) - PR-ConciseName-1.0-20091115.pdf публикуются на IVOA DOCS Page на 2 недели, создается RFC страница, которая аннонсируется председателем WG на 4 недели. ... 0 Comments on ivoa standard process This page is read-only View other revisions Administration . ...

To run a process in the background as a job and carry on working add an (ampersand) at the end of the command line. ... The shell forks a child process to run the command and displays the job number ( [ n ] ) and the PID (Process IDentifier) number. ... If the command is likely to produce error messages you will need to redirect standard error. ... Do not run an interactive command that requires you to type something at the terminal as a background job. ... You will then have to kill its process . ...

... The procedure simply observes ON your source for x minutes and then takes a `blank sky' observation OFF your source for the same amount of time and tracking the same azimuth and zenith angle range. ... If your scans are for 5 minutes or less, your wait time should be set to 1 minute (the default setting). ... 2 (scan duration) + (slew time) + (calibration time) A 5 minute ON/OFF + 10s CAL takes 11.3 minutes. A 7 minute ON/OFF, (which has a 2 minute slew time plus a cal) takes 16.3 minutes. ...

... The J, H and K bands are characterized by a bright background, such a background is mainly due to the emission of atmospheric lines and of thermal radiation. ... If the source cover a large fraction of the slit, spectra off-source must be observed to adequately sample the sky background. ... The on chip integration time (time spent in each position of the slit) must not exceed 40 seconds in J and H bands and 60 seconds in K band. ... We suggest a sequence of 10 for each elementary integration time. ...

... every new catalog of objects has to be contained in the UNIX directory having the same name as the catalog of objects; . ... the programs for local operations (programs of low level) with the catalog of objects are also in the same directory; . brief characteristics and names of the programs and file with the description of the catalog are stored in the file cats_descr ; . ... All astronomical catalogs have a different format and list different observables. ...

On combined processing of different space geodetic observations . ... A software for combined processing of different space geodetic observations is developed along with the work on the co-location of various observational techniques at the observatories of Quasar VLBI network. ... Various aspects of the combined processing of different types of space geodetic observations are also discussed. ... space geodetic observations, combined processing, normal equations, software package, SINEX-format. ...

Next: The STScI NICMOS Calibration Up: No Title Previous: CONICA: The high resolution . The STScI NICMOS Calibration Pipeline . Introduction . ... Dark Current Subtraction . ... Input Data . ... Scalar Background Subtraction . 2-D Background Subtraction . ... Status and Goals of the NICMOS Calibration Plan . ... Photometry . ... Photometric Performance of NICMOS . ... NICMOS Photometry. ... ST-ECF Grism Spectrum Software for NICMOS Grism Data . ... Analysis . ... STScI NICMOS Software . ...

... 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). ...

Optical and UV Spectrophotometric Standard Stars . ... Apache Point expresses its thanks to J. R. Walsh and to ESO for allowing us to place a copy of these pages at Apache Point. ... Access to the standards is either through: . ... The data for the standard stars come from four sources: . ... Data for 23 stars based on IUE and optical spectra and calibrated by the primary WD standards. ... The data from which the plots were produced are also available by ftp access from the standard star pages. ...