STIS Instrument Handbook for Cycle 24 . ... Space Telescope Imaging Spectrograph Instrument Handbook for Cycle 24 > Chapter 6: Exposure Time Calculations . Chapter 6: . Exposure Time Calculations . ... 6.1.1 The STIS Exposure Time Calculators . ... 6.2.1 Spectroscopy . 6.2.2 Imaging . ... 6.4 Computing Exposure Times . 6.4.1 Calculating Exposure Times for a Given Signal-to-Noise . 6.5 Detector and Sky Backgrounds . 6.5.1 Detector Backgrounds . ... 6.8 Exposure Time Examples . ...

... Meade Instruments Corporation . ... How to Calculate Power . How to Calculate Power: The magnification, or power, at which a telescope is operating is a function of the focal length of the telescope's main (objective) lens (or primary mirror) and the focal length of the eyepiece employed. ... Example: The Meade DS-2070AT telescope has an objective lens focal length of 700mm; when this telescope is used with a 25mm eyepiece, a power of 700/25 = 28 power (written as "28x") results. ... about meade | ...

Next: *imcalc* - Obtain a Up: Calibration Previous: Exposure Map . Background maps are provided by the standard processing for all ROSAT and Einstein instruments. For the PSPC and IPC these are in three standard bands: soft, hard, and broad (Table 6.2). ... N.B.: ROSAT PSPC background maps in SASS 5-6 or higher are generated by smoothing a source-subtracted, exposure corrected image (see the ROSAT Data Products Guide). ... imcalc* - Obtain a background subtracted image for ROSAT PSPC Data . ...

... Science Users Information > Science Publications > Science Announcements > Observing Time Calcaulation for APEX Instruments Artemis and Supercam . ... Observing with ESO Telescopes . ... A new observing time calculator is now available for the Artemis 350ТЕm camera offered on APEX in Period 94 . ... However, to estimate the observing time request, the Swedish Heterodyne Facility Instrument ( SHFI ) on-the-fly calculator should be used, and the time request should be divided by a factor of 13 . ...

Displays the current status of NICFPS spectrograph and allows you to change the configuration. ... Once the instrument builders have more time with the instrument we plan to refine the controls. ... Select TUI:Save Window Positions to remember the state of this checkbutton. ... The contextual menu on each control can return that control to the current setting of the instrument. ... the current set of filters. ... Current : reset all configuration widgets to the current state of the instrument. ...

A new Advanced Instruments and Engineering Facility will be established on Mt Stromlo, establishing new capability for precision optics manufacture and an expanded research and development program. ... ANU has signed an agreement with commercial aerospace partner Auspace to rebuild the Near-infrared Integral-Field Spectrograph, (NIFS) for the Gemini Observatory in Hawaii. ... This first Australian instrument for the Gemini telescopes is of enormous importance to Australian science and Stromlo staff. ...

This diagram shows the six superimposed "layers" of the CSS table model. This diagram illustrates the algorithm for calculating a cell's final background. ... The diagram shows how, looking down on the six rectangles, one may compute the background color of each cell. ... A cell without a background color in the top layer is depicted as a "window" onto the lower layers, which give its final background color. ...

OptInt PmWiki . ... Science Instrument Downselect . ... Page History | ... PmWiki . ... PmWiki FAQ . ... pmwiki.org . ... Return to Science Instrument Downselect ( Edit ) . ... Proc. SPIE paper on downselect . ... March 09, 2007, at 05:30 PM by John Young - Status from 2006/10/12 update (see attachment) . ... Complete . ... P4S combiner optimization . ... P4S switchyard optimization . ... P8 combiner optimization . ... P8 (internal) switchyard optimization . ... Due 2006/07/31 . ... Due Date . ...

... 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. ...

... 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. ...

The LIDAR Instrument Information . The LIDAR was designed in a bistatic scheme with a separate transmitter and two receiver channels. ... The total mass of the instrument is only 940 grams (about 2 pounds) and a total volume is 950 cubic centimeters in both assemblies. ... Engineers designed the LIDAR to operate in the temperature range from -100 to 50 degrees Celsius (-148 to 122 degrees Fahrenheit) under lower pressure, near one millibar. ... One of the receiver channels has polarizer. ...

... In most cases it will however be necessary to compute an appropriate airmass using the COMPUTE/AIRMASS . ... It is important to keep in mind that ``mean airmass'' and ``mean atmospheric extinction correction'' are different from the values at mid-exposure, especially for larger zenith distances. ... For reasonable combinations of exposure time and zenith distance, the weighted mean airmass supplied by COMPUTE/AIRMASS should be appropriate. ...

... The package stsdas.graphics needs to be loaded (to run imdisp_pos for getting # the NDC's of the display image) # set imtype="fits" # print " " print " *** Start of impol SPECIAL instrument demo *** " print " [stecf.impol and stsdas.graphics need to be loaded] " print " " # # (First delete any model reflection nebulae left over from previous demos) # print " Deleting any old demo files " imdel reflneb1*.fits verify=yes # # An input (intensity) image is required. ...

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 . ...

. The ALFA instrument monitor window is a big window showing all ALFA engineering parameters (with the exception of the ALFA motor). The 'Open motor control window' button opens the ALFA motor control window . You can return to the main CIMA page by clicking here .

Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... The instruments engineer and technical support subdivision consists of the engineer support group: 4 senior engineers, 5 engineers and 14 staff members of service personnel. Head: Zavorin A. V. The main subdivision's instrument is the Incoherent Scatter Radar . The instruments engineer and technical support subdivision's main task is technical support of Irkutsk IS radar experiments. ...

... The J, H and K bands are characterized by a bright background, such a background is mainly due to the emission of atmospheric lines and of thermal radiation. ... If the source cover a large fraction of the slit, spectra off-source must be observed to adequately sample the sky background. ... The on chip integration time (time spent in each position of the slit) must not exceed 40 seconds in J and H bands and 60 seconds in K band. ... We suggest a sequence of 10 for each elementary integration time. ...

The "MARS-3" Matrix Radiometric System for RATAN-600 Radio Telescope: Trial Observations D.V. Kratov Special Astrophysical Observatory of RAS The MARS (MAtrix Radiometric System) project is reported. ... MARS-3"( year 2006) - 16-channel system (BS) with 5 GHz bandwidth, calculated Tsys = 200 - 210K, 5 mK(s1/2). ... MARS-3" was installed in the focal line of the RATAN-600 radio telescope in April 2007. ... The test observations showed effectiveness of the new matrix radiometric system. ...

... SKA lifetime will extend to 2050 ­ Frequencies above 2 GHz will require a flux concentrator ­ If multi-fielding is to be feasible in 1st half of century, need to pursue an omni concentrator In a LL SKA implementation antenna cost is minimum with small lenses ­ A r2 ; dielectric volume r3 ­ Small lenses lead to same electronics-dominated regime as AA » Evolutionary path with advancing technology ( e.g . DSP) ...

... Ciel Espace, le magazine qui vous guide toujours plus loin . ... des actualitГїs . ... des tests d'instruments sans concession . ... des pages consacrГїes Г la publication de vos photos Mais c'est aussi une vraie communautГї avec laquelle partager votre passion et nourrir votre curiositГї. ... A la une . ... Ciel et Espace teste rГїguliГЕrement les instruments dв?Tastronomie du marchГї afin dв?Tinformer les astronomes amateurs de la qualitГї de ces instruments, tant sur le plan optique que mГ...