... The Science Operation Department is composed of Astronomers, Telescope Instruments Operators(TIOs) and Data Handling Administrators(DHAs). ... Astronomers have proposed several methods to quantitatively measure the amount of turbulence above the telescope, which the most common ones is Differential Image Motion Monitor (DIMM). In optical testing, the Hartmann test is the common method to test the quality of optical components. ... Hartmann mask consists of 48 lenses. ...

Instrument Science Report NICMOS 2003-004 Measuring the Cold Mask Offset E. Roye, J. Krist, A.B. Schultz, T. Wiklind April 23, 2003 ABSTRACT An unexpected increase in measured thermal background during the Cycle 11 early calibration program caused speculation that the cold mask position could have shifted since Cycle 7. ... It was concluded that the cold mask position was not the cause of increased thermal background observed during the Cycle 11 early calibration program. ...

... As modern observatories evolve to production units delivering data products and calibrated scientific data to the end users, new challenges arise in assessing the quality of data products. ... Taking the analogy of speed control on a motorway we can describe the system as a device (radar) collecting measurements of the system performance (passing cars). ... One of the direct applications of quality control is the verification of instrument performance based on the analysis of calibration exposures. ...

NATIONAL ASTRONOMY AND IONOSPHERE CENTER . ... Astronomy . ... Visitor Center . ... Optical . Lidar . At Arecibo we have a variety of optical instruments that we use to study terrestrial airglow emissions. ... This equipment is located in our Optical Laboratory, which is on site about 1000 feet from the center of the incoherent scatter radar. ... The various observational modes that are available are described in supplementary documentation for the Arecibo Observatory Optical Laboratories. ...

... NOTE that this call also sets the state of the cal to the returned instrument. The and are obtained from respectively from the INSTRUME and DATE-OBS keywords of the dataset header. The is read from the RA_PNT , DEC_PNT and PA_PNT keywords (this is actually wrong, since the instrument attitude is what should be stored in these, not the spacecraft attitude). The boresight is then obtained for the exposure start time, and calculated by applying the boresight rotation to . ...

... An OBJECT column gives the name of the object observed (usually a star name). ... In critical cases, it is common practice to measure sky on two or more positions around a target object, and these positions must be identified. ... A general treatment of this problem requires a column called OBJECT, bearing the usual name of the object (as in the star tables); a column labelled STARSKY, to distinguish between star+sky, star alone, or sky alone; and additional columns to identify the sky position. ...

Quality Control and . ... INSTRUMENT QC: . ... VLTI . ... Trending means following the evolution of data and instrument quality with time. The main goals of ESO data quality control (QC) are: . ... More complete and in-depth checks (QC1, trending) are done at ESO headquarters in Garching by the Quality Control Group. The complete trending history of each VLT instrument is also maintained here. Go to the above links for instrument specific information about trending and QC. ...

... RADIATION AND ECOLOGICAL MONITORING . ... OF MEASURING CHANNELS . Parameters of ecological fields measured by ARES . Parameter measured, . ... Volumetric activity of gases radionuclides in the air, Bq/m 3 : . ... of inert gases . ... Volumetric activity of a- and b-active aerosols, Bq/m 3 : . ... Concentration of nitric oxide NO, mg/m 3 . ... Meteorological parameters measured by ARES . ... 0.5 + 0.05 V), where V - measured wind velocity . ... Official WEB-site of S.P.Korolev RSC Energia . ...

INFRARED FOURIER-SPECTROMETER SICH-F . ... Instrument work regimes: 1) Inside. 2) Calibration at inside standard sources 2 - 4 times per a rotation. 3) Calibration at "free space" 2 - 4 times per a rotation. 4) Infrared radiation measuring 10 - 40 min. per a rotation. ... Spectrometer consists of the photodetector block and the block of signal processing and control. ... Diagnostic information and attach data will transfer by state telemetric channels. ... Detector temperature. ...

ST-ECF Technical Instrument Report WFC3-2009-04 The cross dispersion profiles of the WFC3 grisms H. Kuntschner, H. Bushouse, M. KЭmmel, J. R. Walsh April 30, 2009 ABS TRACT This document summarizes the analysis of the cross-dispersion profile width for the three grisms of the WFC3. For the IR grisms, the cross dispersion profile width derived from white light images and monochromator steps obtained in TV3 provide consistent results also in agreement with estimates derived from direct images. ...

... SPIcam is a general purpose, visible-wavelength, direct imaging CCD camera with > 50% QE between 400-900 nm. It may be operated in either traditional point-and-stare mode or in a drift-scanning mode. The detector in SPIcam is a backside-illuminated SITe TK2048E 2048x2048 pixel CCD with 24 micron pixels and an unbinned plate scale of 0.14 arc seconds per pixel, giving a field of view of 4.78 arc minutes. ... CCD pixel size = 24 m . ... CCD read noise = 5.7 e - / pixel 0.1 . ...

Operating of the superconducting integrated receiver channel of the TELIS atmospheric sounder. ... The noise temperature of the SIR was measured to be as low as 120 K, with an intermediate frequency band of 4 ­ 8 GHz in double sideband operation; the spectral resolution is well below 1 MHz. The SIR was implemented in the three-channel balloon-borne instrument TELIS (TErahertz and submillimeter LImb Sounder) that detects spectral emission lines of stratospheric trace gases (like ClO and BrO). ...

The primary purpose of KM-7 is to measure the temperature of cold electrons Te in Plasmasphere. ... The spacecraft potential can be evaluated from these measurements. ... MLT . ... Fig.1 . KM-7 measurements in MRK mode during the whole orbit 124 , 27.IX.96. ... Preliminary results . In period considered SC passed the plasmasphere at low and middle latitudes near L < 4 at heights = 8000-10000 km. At L > 4-5 and heights > 8000-10000 km SC was in auroral zone. ...

Variations of total ozone content and lower ozone stratosphere temperature in Antarctic Region during winter-spring period A.V. Grytsai National Taras Shevchenko University of Kyiv Astronomy and Space Physics Department assen@univ.kiev.ua Data, used in the work work Total ozone: Total Ozone Mapping Spectrometer (TOMS) measurements during 1979 - 2005 and Ozone Monitoring Instrument (OMI) ones for 2006, for http://toms.gsfc.nasa.gov/ftpdata.html. ... A long-term TOC decrease is significant. ...

This graph shows the percentage abundance of five gases in the atmosphere of Mars, as measured by the Quadrupole Mass Spectrometer instrument of the Sample Analysis at Mars instrument suite on NASA's Mars rover October 2012. ... The graph uses a logarithmic scale for volume percentage of the atmosphere so that these gases with different concentrations can all be plotted. By far the predominant gas is carbon dioxide, making up 95.9 percent of the atmosphere's volume. ...

... GSAOI Home . Instrument . ... The Gemini South Adaptive Optics Imager (GSAOI) is a near-infrared adaptive optics camera that will be used with the Multi-Conjugate Adaptive Optics (MCAO) system on the Gemini South 8-m telescope . ... Gemini's major instrumentation goal is to develop its Multi-Conjugate Adaptive Optics (MCAO) system for scientific use on Gemini South. ... Existing adaptive optics systems use a single natural guide star or artifical laser guide star to measure this image blur. ...

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 . ...

Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... Although their determination is based on the scattering process model, independent check-ups by rocket experiments have shown their correctness in experimental applications. ... Ionospheric data analysis, especially during strong disturbances, cannot be without some other kinds of diagnostic tools. ... The lack of data has always been a challange in this case. ...

... Meade Instruments Corporation . ... Meade Pictor XT-Series CCD Autoguider/Imagers . ... Take new sets of calibration frames if the temperature changes significantly.(or change the set you are using or the scaling if you are reusing calibration frames). ... You can also use scaleable dark frames called thermal frames. ... However, if you wish to reuse dark frames with images of different exposure times, you must turn the dark frame into a thermal frame by subtracting the bias information. ...

... Archives . ... Magnitude [Eqn] . ... Differential Emission Measures (DEMs) are a summary of the temperature structure of the outer atmospheres (aka coronae) of stars, and are usually derived from a select subset of line fluxes. ... is called the Differential Emission Measure and is a very useful summary of the temperature structure of stellar coronae. ... Tags: DEM , Differential Emission Measure , EotW , Equation , Equation of the Week , stellar coronae . ... Comment ( RSS ) | ... Chandra Blog . ...