... Home . ... Data . ... WFPC2 Home . ... Filters . ... Calibration . Calibration Home . ... Data Analysis . Data Analysis Home . Data Analysis Library . ... In the course of our work we discovered a significant ?first exposure effect? where the first exposure produced significantly fewer counts than the subsequent ones. ... These results for F170W suggest systematic errors of 3% to 7% could be present in the photometric calibration of UV filters for data taken late in the WFPC2 mission. ...

... 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. ...

Next: Fitting the Blaze Up: Instrument Response Correction Previous: Instrument Response Correction . ... This flux has to be corrected for two effects in order to get absolute fluxes: first, for the echelle blaze effect, and second, for the chromatic response of the instrument. ... The solution adopted in the reduction, using the standard star љ , is to correct for both the blaze effect and the instrument response simultaneously. ...

... I have compiled a list of throughput filter curves from a variety of telescopes, instruments, and surveys. Click on the name of the filter to download it. The first line of each filter is the zeropoint for that filter. If the filter is in the AB system, it is listed as 0.0 (or in otherwords -48.55). ... Filter . Effective Wavelength . ... A_V . ... 0.987 . ... 0.050 . ...

Optical and UV Spectrophotometric Standard Stars . ... A group headed by R. Bohlin at STScI have established a set of four white dwarf standards based on comparison of White Dwarf model atmospheres with HST FOS spectra. ... Extension of the white dwarf primary standards to more stars, giving 27 in total, are described in Bohlin (Proceedings of STScI HST Calibration Workshop, eds. A. Koratkar & C. Leitherer, p. 49, 1994) and in Bohlin (AJ, 111, 1743, 1996) . ...

... News Latest News News Archive Newsletter Quarterly Status Report . ... Calibration strategy, status and factors limiting success: Chandra . ... Calibration strategy, status and factors limiting success: XMM-Newton . ... Calibration strategy, status and factors limiting success: Swift . ... Calibration strategy, status and factors limiting success: RXTE . ... Calibration strategy, status and factors limiting success: Suzaku . ... Calibration strategy, status and factors limiting success: Integral . ...

... New IRAF tools for the photometric calibration of optical/IR images are presented. The new tools are standard star catalog and world coordinate driven, requiring both accurate standard star catalog coordinate and accurate image coordinate data. Network access to standard star catalog servers is supported. ... The photometric calibration software will automatically convert the standard star coordinates from the standard star coordinate system to the image coordinate system. ...

dfos = Data Flow Operations System, the common tool set for DFO . There is the need for a special initialization file .dfosrc_<proc_instrument> for each supported instrument of the phoenix project. It resides under sciproc@muc08:$HOME and is a standard dfosrc file, except for its name. ... define a home directory /home/sciproc/<instr> and use it for $DFO_CONFIG_DIR, $DFO_PROC_DIR etc. define a data directory /sciproc/<instr> and split it into /sciproc/<instr>/raw/<release> etc. ...

... There are compelling reasons for the pulsar community to utilise a standard data storage format. For example, standardisation of file formats significantly decreases the amount of effort required to integrate new instruments into the analysis chain. ... Accordingly, we have defined PSRFITS as a standard FITS-based format for pulsar data files. ... For example, the first line of Processing History HDU contains information about the data acquisition program and the initial structure of the file. ...

Next: The root filesystem Up: Overview of the Directory Previous: Overview of the Directory . This chapter is loosely based on the Linux filesystem standard, FSSTND, version 1.2 (see the bibliography, [ Qui95 ]), which attempts to set a standard for how the directory tree in a Linux system is organized. ... This chapter does not explain all files in detail. ... The major parts are the root, /usr љ , /var љ , and /home љ filesystems (see figure 2.1 ). ... Figure 2.1: Parts of a Unix directory tree. ...

Next: Buffer Manipulation Up: Programming in C Previous: Compiler Options . Listed below are nearly all the ANSI C standard library functions. The header file where related definitions are stored are given. These may vary on some systems so check local reference manuals. ... More info can be obtained from online man calls or reference manuals. Buffer Manipulation . Character Classification and Conversion . ... File Manipulation . ... Wed Sep 14 10:06:31 BST 1994 ...

... S.P. KOROLEV ROCKET AND SPACE CORPORATION ENERGIA . ... OAO RSC "Energia" . ... Company's History . ... Brief History of Rocket and Space Technology . ... Flights Chronology . ... ISS Russian Segment . ... The received information on the metabolism state makes possible assessment of the cosmonauts' physical state throughout long-duration space flights and will be used as the basis for development and improvement of diagnostic and prophylaxis tools. ... 2015 JSC "S.P. Korolev RSC "Energia" . ...

This service contributes to the International Service of Geomagnetic Indices (ISGI) of the IAGA . ... The Kp numbers of the previous month are available in tabular format . ... There are available also historical and current Kp and derived indices per anonoymos FTP (see below). ... U.S.A. FTP server: ftp://ftp.ngdc.noaa.gov/STP/GEOMAGNETIC_DATA/INDICES/KP_AP/ . monthly update) . ... contains the monthly Kp / ap tables in a simple text format readable for both humans and computers (*.tab). ...

OSSERVATORIO ASTROFISICO DI ARCETRI CENTRO PER L'ASTRONOMIA INFRAROSSA E LO STUDIO DEL MEZZO INTERSTELLARE LARGO ENRICO FERMI, 5 -- I­50125 FIRENZE Firenze, September 30, 1994 FROM: C. Baffa TO: Tirgo Staff SUBJECT: Data handling with Tirgo Nicmos3 instruments All data taken with Tirgo Nicmos3 instruments (Arnica and Longsp) are stored directly as standard FITS files at 16 bits integer format. ... The acquisition program never rewrites over an old file. ... An example in table 1. ...

... 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. ... MeadeтАЩs new LX70 Series offers high-quality German equatorially mounted telescopes with slow-motion controls and heavy-duty steel tripods. ... For crisp wide-field observing and imaging, few optical designs match the performance of a true triple-element apochromatic refractor. ... Meade Standard Field Tripod #07020. ...

. Parent Directory . winter.wonderland

AO Home AO Astronomy Schedule Receivers CIMA AO IDL . IDL is the recommended data-reduction package for Arecibo spectral-line data. The different back-ends produce different data format. ... Mock spectrometer standard FITS format headers . Mock spectrometer PSRFITS format headers . WAPP CIMAFITS format headers . Interim Correlator IDL headers . ... Search WAPP data . ... How to fix WAPP FITS files taken with doppler tracking in order to read them with standard FITS readers . ...

. To redirect the standard input for a command use the < (less than) character followed by the name of the input file. For example: mail tony < memo . This redirects the standard input to the mail command so that it comes from the file memo . The effect of this is to mail the contents of this file to the user tony .

... 141570 Mendeleevo, Moscow region, Russia, VNIIFTRI. ... Values r and t are the functions of time , but value c is the function of time in less extent and value d almost does not depend on time Step-by-step We produce comparison by comparison standard in several steps: Comparison standard (Leica TDA 5005) and retroreflector are calibrate on national state standard of length; Transfer comparison ...

Weaving together Astronomy+Statistics+Computer Science+Engineering+Intrumentation, far beyond the growing borders . ... Posts tagged ?standard procedure? ... statistician learning astronomy ? ... In two years of this slog?s life, there?s no posting by a statistician, except one about BEHR . Statisticians are busy and well distracted by other fields with more tangible data sets. ... Comment . ... Entries RSS . ... vlk on [MADS] Parallel Coordinates . ... Entries (RSS) and Comments (RSS) . ...