... omgchain (omgchain-1.6) [xmmsas_20070708_1801-7.1.0] . Meta Index / Home Page / Grism chain procedure . The task omgprep introduces some changes into the grism image files which are necessary for running the source detection and spectral extraction tasks. ... The original unrotated image is shown in Fig. ... Images prepared for running the source detection and spectra extraction tasks are shown in Fig. 4 (for the visual grism) and 7 (for the UV-grism). ...

Еще в разделе: (Показать все результаты (>32212) - xmm.vilspa.esa.es/ )

Next: Getting the Dispersion Up: Geometric Correction Previous: Geometric Correction . For optimum results, it is important to use a comparison spectrum with as high a signal-to-noise ratio of the lines as possible. ... The algorithm detects lines whose strength exceeds a certain threshold (parameter THRES ) above the local background. ... The command IDENTIFY/LONG allows an initial interactive identification, by wavelength, of some of the detected lines. ...

Еще в разделе: (Показать все результаты (>2013) - www.sao.ru/ )

• Geometric Correction
• Fitting the dispersion curve

... LABORATORY OF RADIO ASTRONOMICAL OBSERVATIONS . Radio sources identification is one of the most important tasks of the current radio astrophysics. ... Optical idetification. ... Optical identifications of subsample of steep spectra radio sources from RC catalog using 6m SAO telescope of SAO RAS: optical observations. ... Astronomy Reports. ... Identification of radio sources with data of various radio catalogs allows one to construct continual spectrum of the object and its radio structure. ...

Еще в разделе: (Показать все результаты (>696) - jet.sao.ru/ )

• Search for distant radio galaxies in SAO

... L-Wide . ... Receiver History . ... Available Filters: . ... Use with e.g. filter 5) NOTE 2 1120-1220 3 1230-1470 4 1550-1820 5 1100-1800 6 1360-1470 7 1320 hipass NOTE 8 1180-1280 9 1280 hipass (ext Output unit. ... Consequently, the calibration for data collected using the hipass 1320 and the hipass 1370 filters only will be mis-calibrated (i.e. by using the opposite polarisation calibration data). ... It is now possible to select any bandpass filter that is not in the 1320 hipass band. ...

Еще в разделе: (Показать все результаты (>4306) - www.naic.edu/ )

... astrometric coordinates Pro: measures exactly what you want to check Con: more labor intensive and not possible/feasible in most cases Guidestar Separations Guide Star Pair Fit Error during 2005 GSC1 Ops 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 - 0.2 - 0.4 - 0.6 - 0.8 -1 - 1.2 - 1.4 - 1.6 -1.8 -2 2005 2005.1 2005.2 2005.3 2005.4 2005.5 2005.6 2005.7 2005.8 2005.9 2006 Guidestar ... Guidestar pair statistics, sorted by FGS, gives information to facilitate alignment. ...

Еще в разделе: (Показать все результаты (>18039) - www.stsci.edu/ )

• http://www.stsci.edu/documents/dhb/webvol2/0_preface.fm3.html
• http://www.stsci.edu/documents/dhb/web/0_preface.fm3.html
• HST Call for Proposals

Next: Frequency Frame Alignment Up: Calibration Previous: Unit Conversion Index . As higher frequencies (particularly 20 GHz) it is important to make corrections for atmospheric opacity and gain-elevation effects. ... This means that gain-elevation and opacity corrections will not work unless these get recalculated. ... Gain-elevation curves for some telescopes and frequencies are known to ASAP (currently only for Tidbinbilla at 20 GHz and Parkes at K-band). ... ASAP>scans.opacity(0.083) . ...

Еще в разделе: (Показать все результаты (>11376) - www.atnf.csiro.au/ )

• Initial ``fixes'' to millimetre data
• Important Notes - Please check these
• Code History

Next: Sample Properties Up: Sample Identification Previous: Comments on Individual Sources . Previously known serendipitous sources were selected by cross-correlating WGACAT with a variety of optical and radio catalogs, including the Ver?n-Cetty & Ver?n (1996) and Hewitt & Burbidge (1993) quasar catalogs, the 1 Jy (Stickel et al. 1994) and S4 (Stickel & K?hr 1994) radio catalogs, and the BL Lac catalog of Padovani & Giommi (1995b). ... Details of these 97 objects are given in Table 6. ...

Еще в разделе: (Показать все результаты (>66500) - www.eso.org/ )

• ESO - Which pipeline data product are the important ones for quick inspection?
• ESO - Why is Technology Transfer important for ESO
• ESO - Important ESO Sites Contact Addresses

Next: Status of the BIMA Image Pipeline . ... We describe all the steps of the standard reduction including per pixel error propagation: Bias correction, treatment of bad pixels, flatfielding, and filtering of cosmic ray events. ... We build difference images via image convolution with a technique called OIS (optimal image subtraction, Alard & Lupton 1998), proceed with PSF-fitting, relative photometry on all pixels and finally apply an automatic detection of variable sources. ...

Еще в разделе: (Показать все результаты (>1689) - www.adass.org/ )

• In-Orbit Calibration of the Distortion of the SOHO/LASCO-C2 Coronagraph
• The Basic Calibrated Data Processing Pipeline for SIRTF IRS
• ADASS 2003 Conference Proceedings

Next: ST-6 Data Collection Up: Data Acquisition Previous: Data Acquisition with . ... The tracking software is extremely important to data collection, and will be presented here. The tracking software is run from the CPU box. ... The exposure adjust will set the exposure time. ... After the drive is calibrated, the track button will set the ST-4 in a mode where it will track the star until it either loses track or the operator stops the track. ...

Еще в разделе: (Показать все результаты (>2259) - hea-www.harvard.edu/ )

• The AstroStat Slog error model
• The AstroStat Slog Blog Archive A Quote on Model
• The AstroStat Slog structural model

spaceweb@oulu.fi - last update: 21 December 1998, 1400 UT (RR) . ... This is not as trivial a question as one might think, since it is not enough to know the location with respect to the Earth and/or the Sun in some arbitrary coordinate system. One may have to consider things like differences between the solar equatorial plane and the Earth's orbital plane, the changing direction of Earth's spin axis during the year, and the magnetic dipole orientation. ... Geocentric solar ecliptic . ...

Еще в разделе: (Показать все результаты (>665) - www.iki.rssi.ru/ )

• Auroral arcs [Oulu]
• Dayside aurora [Oulu]
• Dispersion relation [Oulu]

Searching for GRB -GWB coincidence during LIGO science runs Isabel Leonor University of Oregon LIGO-G050216-00-Z Motivation almost 40 years since GRBs were discovered past 15 years has been time of important clues isotropic and inhomogeneous distribution (BATSE); first optical, x-ray, radio counterparts; redshift measurements; association with core-collapse supernovae yet important ...

Еще в разделе: (Показать все результаты (>298) - zebu.uoregon.edu/ )

• http://zebu.uoregon.edu/1999/es202/hw1.html
• http://zebu.uoregon.edu/2003/hum399/brahesum.html
• http://zebu.uoregon.edu/1998/ph162/hw1.html

Next: Major services in a Up: Overview of a Linux Previous: Various parts of an . The Linux kernel consists of several important parts: process management, memory management, hardware device drivers, filesystem drivers, network management, and var