Next: Some theory Up: userhtml Previous: Calibration . By many measures, the ATCA 3-mm observing band is a completely different domain to the other ATCA bands. ... Not surprisingly many aspects of the data reduction are also different. This chapter reviews the theory behind some of the differences, and then considers a practical approach to calibration. ... Antenna gain considerations and flux calibration . Instrumental phase . Atmospheric phase and phase calibration considerations . ...

Еще в разделе: (Показать все результаты (>11614) - www.atnf.csiro.au/ )

• Antenna gain considerations and flux calibration
• Mark III Observations

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Lightcurve of HW Vir from images obtained using the Faulkes Telescope South, operated by Las Cumbres Observatory . The blue triangles show the difference between two stars whose brightness is constant. ... This shows the value of the Faulkes Telescopes in the follow-up observations of eclipsing binaries with the aim to detect and characterise additional circumbinary companions. ...

Еще в разделе: (Показать все результаты (>1822) - star.arm.ac.uk/ )

• ULTRACAM Observations of Subdwarf B Stars
• Observations with the Faulkes Telescope North
• Conference 98

... Basic Observables: Zero-differenced phase and code ionosphere-free combinations of global GNSS network stations, corrected by P1-C1 satellite code biases (cc2noncc), daily observations with 30 seconds sampling rate Sites coordinates : IGb08 reference frame coordinates and velocities Displacements: solid tides, ocean loading, pole tide loading (IERS 2010) Geometric model : Receivers antennas eccentricities, absolute receiver and ...

Еще в разделе: (Показать все результаты (>309) - www.gao.spb.ru/ )

• http://www.gao.spb.ru/english/as/j2014/presentations/pasynok.pdf
• Pulkovo NEO Page: Observations
• Pulkovo NEO Page: Estimation of Accuracy of the Observations

... Calibration and analysis of this observation posed very interesting challenges for the authors, in particular dealing with an exciting new instrument whose on-orbit calibration was not yet well defined. ... Five mosaic positions were observed during five consecutive orbits as well as observations for dark and flat calibration. ... Darks and flats had to be created from contemporaneous reference observations and problems within the calibration process had to be resolved. ...

Еще в разделе: (Показать все результаты (>1413) - www.adass.org/ )

• Modern CCD Observations of Moving Celestial Objects: Algorithms and Software
• Distributed Software for Observations in the Near Infrared
• ADASS 2003 Conference Proceedings

... A radio galaxy is a galaxy that emits an unusually big amount of energy at radio wavelengths. ... Inside of each galaxy with an active nucleus (radio galaxies are among them) there must be a system of a "central machine" responsible for the colossal amount of the emitted energy from radio to gamma ranges. ... Sometimes a radio source in an active galaxy may flare again if the needed conditions appear (a new portion of matter would fall into the furnace of the "central machine"). ...

Еще в разделе: (Показать все результаты (>279) - mavr.sao.ru/ )

• Observations Support Laboratory BTA
• Ratan-600 observation schedule
• Observations Support BTA

... Let us first find out which way -- rise in spectral resolution with some loss in the S/N ratio or increase in the S/N ratio with a fixed spectral resolution -- is better for the purpose of reduction of equivalent width determination errors. ... N -- number of counts for 1 ? ... line equivalent width, . ... Thus if the spectral resolution is managed to be increased (i.e. to decrease )without loss in the number of counts falling at 1 ?, the equivalent width measurement error is then proportional to . ...

Еще в разделе: (Показать все результаты (>804) - jet.sao.ru/ )

• On the problem of high spectral resolution observations of faint objects
• Observations and spectra reduction
• di_eks

A computer controlled low light photometer for nightglow observations. Hardware units of portable photometer for low light measurements, especially night glow emission is described. ... Interface card contain three channels of 24 bit counter, 4 channels of 12 bit ADC and the buffer bus for the controlled motors of the altazimuthal fork mounting and filters wheel, the position encoders. ... Where N( ) is output signal photometer generated input light flux F( l ) . ... PMT # . 599 . ...

Еще в разделе: (Показать все результаты (>114) - space.univ.kiev.ua/ )

• Researches of Astronomy and Space Physics Department
• Explanation of the table of physical observation of the Sun.
• Lunar physical observations. Explanations for Computer Ephemeris.

Magnetic field measurements onboard the Interball Tail spacecraft are carried out by the FM-3I instrument which consists of two flux-gate magnetometers covering two different ranges: [-200, +200] nT and [-1000, +1000] nT. Besides scientific goals, the FM-3I experiment data is used to perform the attitude control of the Interball Tail spacecraft. ... August 22, 1995 . ... October 18, 1995 . Top of the page . ... Back to the Interball Home Page . ...

Еще в разделе: (Показать все результаты (>753) - www.iki.rssi.ru/ )

• Current Solar Wind Conditions
• Remote Sensing of Tropical Regions
• Dayside aurora [Oulu]

The close position of main satellite and subsatellite (distance between them about 1000 km) and using the similar sets of Faraday cups (VDP and VDP-S) with high resolution measurements (up to 16 Hz for the main satellite and up to 10 Hz for the subsatellite) allow us to determine the small-scale variations of the magnetopause shape and position and to estimate the velocity of the magnetopause motion. ... Two point observation of the magnetopause motion: the INTERBALL project. ...

Еще в разделе: (Показать все результаты (>906) - www.cosmos.ru/ )

• Events on January 10-11, 1997 - INTERBALL observations
• GRB observations
• OFO IKI / TV System for Navigation and Observation

Crater Gassendi . ... I made this drawing was made on the 26th of november 2001. If you compare this one with the previous drawing of Gassendi (below) the differences are clear. ... This drawing was made on the 28th of september 2001. After nearly a full month without observations I had a one hour gap between the thicker clouds. ... This drawing was made on the 29th of august 2001. ... This drawing was made on the 27th of august 2001. ... This drawing was made on the 25th of august 2001. ...

11. Bojan Nikolic -- 90 GHz Continuum Observations of Messier 66

12. Observation Night National Astronomy and Ionosphere Center (Arecibo...

13. Observations - Page 2

14. http://www.eso.org/~hukaufl/DI_TALKS/rauer.pdf

15. Methods and instruments to measure/monitor major site properties

16. Procedures for Observations

17. http://hea-www.harvard.edu/AstroStat/astro193/Week1-Jan28.pdf

18. Journal "Peremennye Zvezdy"

19. GOCG Pre-Observation Products

20. (Untitled)