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Next: Summary of reduction Up: Echelle Reduction Previous: Saving the Data . In the present version we will be concerned with the standard configuration of CASPEC, the Cassegrain Echelle Spectrograph which is in operation at the Cassegrain focus of the ESO 3.6 m telescope. ... In its standard configuration CASPEC uses a a 31.6 lines/mm echelle grating together with a 300 lines/mm grating cross disperser. ... The table shows the change in resolution with the order number. Table: Resolution . ...

... 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. ...

... HYPERBOLOID is a plasma spectrometer aimed at the investigation of the low energy ions dynamics in the polar ionosphere and magnetosphere on the INTERBALL Auroral Probe . ... The instrument is basically a multi-directional ion mass spectrometer measuring ion distribution functions over an energy range from ~0.1 to 80 eV. ... The ion angular and energy distribution are obtained by means of an electrostatic optics defining 2 planes with several entrance windows. ...

. The description of the instrument is divided into the following sections: . Optical Design . Cryogenics and Mechanics . Electronics and Software . Determination of Detector parameters . Some photos of the instrument . Other high resolution images .

... The ARC echelle spectrograph records the entire visible and near-IR spectrum in one exposure on a 2048 x 2048 SITe CCD chip with 24 micron pixels, with a resolution of 30,000. (2.5 pixels) . ... CCD is a SITe TK2048E back illuminated CCD . CCD is a 2048 x 2048 pixel array . ... Field of View: Available slits (Observing Specialist installable): 1.6" x 1.6" , 1.6" x 3.2" (default), 1.6" x 4.7", 0.9" x 0.9" (pinhole) . ... 31.6 grooves/mm, blaze angle b = 63.5 deg (nominal), or tan b = 2 . ...

... The motivation for this task is to create one high resolution response matrix for a set of observations without the need for creating individual high resolution matrices. ... This task creates a single response matrix file using information from a list of spectrum from multiple observations, and can also combine spectra and background spectra of the same instrument and spectral order to produce final files that can be used for futher, quantitative analysis in a fitting package such as Xspec. ...

... Instrument Description . Software: Version 4.0 . Version 3.0:Complete Documentation . ... ИОНОЗОНД ПАРУС, разработанный в ИЗМИРАН, предназначен для диагностики ионосферы и оперативного прогноза КВ связи. ... Общая структура ИОНОЗОНДА ПАРУС, Технические Характеристики , Конструктивные параметры на настоящий момент соответствуют модификации Комплекса: ВЕРСИЯ 3.0 . ... Там же находится полное описание Комплекса ИОНОЗОНД ПАРУС: ВЕРСИЯ 3.0 . ... 2004 IONOSONDE PARUS ...

The ESO Very Large Telescope consists of an array of four 8-meter telescopes which can work independently or in combined mode. ... In such a mount the telescope tube moves around a horizontal axis called elevation axis. ... The telescope tube itself consists of a steel structure supporting at the bottom the primary mirror (M1) in its cell, and at the top the M2 Unit by means of metallic beams called "spiders". ... The VLT can operate in either Cassegrain, Nasmyth or Coud focus. ...

... Status of the ELECTRON experiment . ... The objective of the ELECTRON experiment is to perform 3-D measurements of the plasma electrons in the energy range from 10 eV to 26000 eV, with good angular resolution, sensitivity and large dynamical range. ... Figure 1 presents the ELECTRON sensor. ... Click on the picture to view large one) . ... Figure 3 shows dynamical spectra with counting rate measurements performed by ELECTRON experiment during very multiple magnetopause crossings on February, 4, 1996...

RTT150 . Russian-Turkish 1.5-m Telescope . ... Until 2002 observations were mostly performed with ST-8E CCD in the 1:7.7 Cassegrain focus. ... In April, 2003 telescope was equipped with a larger-size CCD Andor DW436 . ... 2048 x 2048 pixels, . ... Since summer of 2002 the main focal detector of the RTT150 telescope was AP47p CCD in 1:7.7 Cassegrain focus. ... During September 3-13, 2002 works on installation of new autoguiding system ( photo 1 ) were carried out on RTT150 telescope. ...

Orbit . ... The orbit of the RadioAstron provides four types of study: . rough images of radio sources with ultra-high angular resolution, using all baselines up to the radius of the apogee, that is much larger than Earth diameter; . ... high quality imaging of radio sources, with moderate resolution, by observing either with small projected base lines Earth-spacecraft, i.e. close to the orbital plane, or near the perigee. ... high accuracy orbit determination. ... Space Radio Telescope . ...

... Meade Instruments Corporation . ... Refracting telescopes (Meade Models NG-60, NGC-60, DS-2070AT, ETX-70AT, LXD55-AR5, LX55-AR6 ) and mirror-lens telescopes ( ETX-90AT, 105AT, 125AT, LXD55-SC8, 8LX90, LX200 GPS Series ) are generally more versatile in a wide array of land and astronomical applications. ... The intermediate-level observer, or the non-casual telescope user who wishes to purchase one telescope for a lifetime, should consider a Meade Model LXD55 series, 8LX90, or LX200GPS. ... Meade 4M ...

. This diagram illustrates the relationship between the reference pixel and device pixels (called "dots" below). The image depicts a high resolution (large dot density) laser printer output on the left and a low resolution monitor screen on the right. For the laser printer, one square reference pixel is implemented by 16 dots. For the monitor screen, one square reference pixel is implemented by a single dot. Return to image.

... Telescopes . ... Diameter of circular antenna . ... Number of antenna elements . ... Geometrical area . ... Effective area of full circle . ... Wavelength range . ... Frequency range . ... 2 arcsec . ... Flux density limit . ... Absolute brightness temperature limit . 0.050 mK . ...

Beginning from the May of the 1997 we started to publish our daily solar radio observations at RATAN-600 radiotelescope. ... Periscope System: South Sector+Flat Mirror . ... It is possible to track a source by moving the secondary mirror along the arc-shaped railway tracks or to perform azimuthal 2D map synthesis . ... 1) It is possible to simultaneously carry out independent observing programs using individual sectors at various discrete azimuths and secondary mirrors on corresponding railway tracks. ...

... Up: Telescope and Instrument Control Systems . ... 216, Astronomical Data Analysis Software and Systems IX, eds. N. Manset, C. Veillet, D. Crabtree (San Francisco: ASP), 271 . ... NASA Goddard Space Flight Center and AppNet, Inc. are developing AIML to command and control astronomical instruments. Our software architecture combines the platform-independent processing capabilities of Java with the power of XML. ... Instrument description is too tightly coupled with details of implementation. ...

... public class TiffDecoder . ... static int . ... Field Detail public static final int NEW_SUBFILE_TYPE . ... public static final int IMAGE_WIDTH . ... public static final int IMAGE_LENGTH . ... public static final int BITS_PER_SAMPLE . ... public static final int COMPRESSION . ... public static final int PHOTO_INTERP . ... public static final int IMAGE_DESCRIPTION . ... public static final int STRIP_OFFSETS . ... public static final int ORIENTATION . ... public static final int SAMPLES_PER_PIXEL . ...

Next: The Transmission Gratings Up: The Instruments Previous: The Instruments . ... A conventional cross-grid charge detector reads out the photo-induced charge cloud and the electronics determine an arrival time to 16s, and the position with a resolution of about 18 m or 0.37 arcsec. ... The Massachusetts Institute of Technology's Center for Space Research, in collaboration with Lincoln Laboratories, developed the detector system and manufactured the CCDs; Lockheed-Martin integrated the instrument. ...

... Astrophysics Group . ... VLSS . ... To facilitate access for UK and European users, MRAO is providing a UK Mirror of the VLA Low-frequency Sky Survey (VLSS), which is being produced in the US jointly by NRAO and the Naval Research Laboratory (NRL). ... A catalog of discrete sources on these images created by fitting a elliptical Guassians to all sources detected at the 5 sigma level or higher. ... This survey contains publicly available images and catalog information on over 1.8 million radio...