ACS Insturment Handbook for Cycle 24 . ... Advanced Camera for Surveys Instrument Handbook for Cycle 24 > Chapter 9: Exposure-Time Calculations > 9.3 Computing Exposure Times . ... The detector background ( B det ) or dark count in units of counts/second/pixel and the read noise ( R) in counts of the CCD. ... As a consequence, in order to obtain correct estimated count rates for red targets, observers are advised to use the synphot package in IRAF /STSDAS (or Pyraf), or the pysynphot package in Pyraf. ...

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• Space Telescope Imaging Spectrograph Instrument Handbook
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... Science . ... Science Users Information > Science Publications > Science Announcements . ... Observing with ESO Telescopes . ... Published: 04 Apr 2014 . ... First data releases of the Elais-S1 and CDFS fields have just been made available. ... The zCOSMOS-bright advanced data products are now available via the Science Data Products query form of the ESO Archive . ... The Call for Proposals for observations at ESO telescopes during Period 94 (1 October 2014 - 31 March 2015) has been released. ...

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• VLTI Calibrator Selection Help Page
• ESO - zCOSMOS Advanced Data Products Available via Phase 3
• ESO - GOODS/FORS2 Advanced Data Products Available Through Phase 3

XMM-Newton Science Analysis System Page: 1 rgsbkgmodel June 28, 2006 Abstract Compute a model background spectrum from RGS background templates 1 Instruments/Modes Instrument Mode RGS Spectroscopy 2 Use In the interactive environment. pipeline processing no interactive analysis yes 3 Description The aim of this package is to compute a model spectrum of the RGS background applicable to a given observation from a combination of observations of empty elds. ... Model background spectra (OGIP-compliant). ...

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• http://xmm.vilspa.esa.es/sas/7.1.0/doc/rgsbkgmodel.ps.gz
• http://xmm.vilspa.esa.es/sas/8.0.0/doc/rgsbkgmodel.ps.gz
• http://xmm.vilspa.esa.es/sas/6.5.0/doc/rgsbkgmodel.ps.gz

... Meade Instruments Corporation . ... Autostar Computer Controllers . 497 Autostar . ... One of the most important advances in telescope control in the past 25 years, the Meade #497 Autostar Computer Controller turns the ETX into an automatic celestial object locating system. ... The #497 Autostar Computer Controller plugs into the control panel of ETX-90EC, ETX-105EC, and ETX-125EC telescopes and enables automatic location of more than 30,000 celestial objects. ... about meade | ... Meade 4M | ...

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• Meade Instruments - Telescopes, Solar Telescopes, Binoculars, Spotting Scopes
• Meade Instruments Corporation - Autostar Computer Controller Instruction Manual
• CES Media Kit / CES Media Kit / Meade Instruments

Next: The ESO VLT CCD Detectors Software . ... Up: Instrument-Specific Software . ... The framework for data calibration and analysis of the VLT instrumentation is presented, based on the concepts of a calibration plan, pipeline calibration, quality control, and archiving of calibrated data for a ground-based observatory. ... Quality Control Pipeline provides quality assessment for instrument performance data and observing conditions, and tests the results of the Reduction Pipeline. ...

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• A New PROS Task for Calculating HRI Source Intensities or Upper Limits
• Recreating Einstein Level One Processing Exposure Masks and Background Maps in
• Real-Time Linux Driving a Spectrometer

... This is possible at modest cost due to the low moments of inertia of the telescope and enclosure. ... This same performance will be achieved in higher winds when the telescope enclosure is facing away from the wind, or by using wind screens. ... The telescope system (MILT) will be remotely operable with an on-site operator's assistance by an astronomer located at one of the ARC member institutions. ... Mean Wind Speed . ... Offsets > 10 deg: 1 arc sec rms max . ... 5 sec max, tracking to tracking . ...

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• ARC 3.5-m Instrument News Page
• ARC 3.5m | Instrumentation
• Safety.html

... For the XRBs which are highly variable the concurrent presence of the RXTE/ASM that continuously measures their X-ray spectral states invites a new and innovative program to harness the available information to facilitate detailed studies of individual systems as well as comparative studies between classes of systems. ... This will enable them to quickly decide which data are worth putting in effort to extract and further analyze. ...

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• CCD Systems and Their Hardware
• Topics in AstroStatistics
• Notes on IPC and PSPC Spectral Fitting

. Main Sections LabIR main page . Instrument page . Documentation . Science Publications . Special Sections Software Page . Inside the Lab . LabIR staff . Companion Pages Skysoft Home . Tirgo Page . Tirgo Archive . LabIR Hotlist . Lunar occultations . AO star finder . Simple calculator .

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• Fasti Rationale
• HwB: NuBus Connector (Offline)
• Observing capabilities

... Created: 22 January 2001 . ... SERVICE AND CALIBRATION MANUAL . ... Draft Document Outline. ... 4 Preparing NIFS for Use or Storage . ... The purpose of this Service and Calibration Manual is describe the procedures used to service, maintain, and calibrate the operation of the Gemini Near-infrared Integral Field Spectrograph. ... Section 19.4.2 of the document “Programmatic Requirements for Gemini Instrumentation Development” states the requirements for the Service and Calibration Manual . ...

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• Untitled Document
• Software Maintenance Manual
• Computer room

... 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. ...

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• HwB: NuBus Connector
• Echelle Spectra
• Available Commands

Date: 11/24/2014 Time:05:26 Moon Age: 1.8 Available Observing Hours: 12.9 Observer: Instrument: Operator: Cage: Lebofsky, Bell 90PrimeOne Trueblood PF hours lost to: weather: 2.0 telescope: 0.0 instrument: 0.0 computer: 0.0 Time Temp Humidity Wind Vel. Wind Dir. Seeing Open 18:30 37.8F 50% 15 N 1.9 Close 05:20 37.1F 15% 15 NE 1.8 _________________ Description ______________________ Most of the night, seeing >2", which severely limited our available targets. ...

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• http://www.winer.org/Logs/NightLog-2014-11-22.txt
• http://www.winer.org/Logs/NightLog-2014-10-25.txt
• http://www.winer.org/Logs/NightLog-2014-10-26.txt

Next: The Focal Plane Instruments Up: No Title Previous: The X-ray Optics . CXO has two focal plane instruments - the High-Resolution Camera (HRC) and the Advanced CCD Imaging Spectrometer (ACIS). Each of these instruments, in turn, has two detectors, one optimized for direct imaging of x rays that pass through the optics and the other optimized for imaging x rays that are dispersed by the objective transmission gratings when the latter are commanded into place directly behind the HRMA. ...

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• AXAF-Chandra

... New version of magnetic field data (descriptor "itm") is now available with small corrections in offsets and attitude coverage. ... Full set of INTERBALL-TAIL AKR radiointensity KP for AKR instrument is now available (descriptor "ita"). ... KP data availability plots are created. ... Magnetic field data (descriptor "itm") after 1st January, 1998 are recomputed with corrected Bx_GSE offset (this was just 0.5 nT correction). ... CDF files for plasma wave KP are now available (descriptor "itw"). ...

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• DA Retrieval Service
• SPICE System Implementation (briefly)
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The original files with the data were in different formats. ... Such files were named "standard data files" and linked to the database. They can be easily transformed to any desirable format by a code. Here we present two simple computer programs of this kind. ... When running the code, you can specify columns in the output file: wavelength, energy (eV) or wavenumber (cm -1 ) as the first column, and complex refractive index or dielectric function as the second and third columns. ...

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• AI SPbU library of scattering codes

... Exposure Time Calculator (ETC) . ... ESO - Public Surveys . ... the recommended values to use for DIT, . ... Detector on-chip integration (DIT): seconds. to your chosen value - a separate page gives recommended values to use for DIT - for modes 1 and 2 below you may wish to start with the maximum recommended values as these will minimize the effect of read noise (a total object exposure of Y secs with DIT=X secs will produce Y/X lots of read noise) and give you a lower limit on the time needed. ...

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• VISTA - Visible and Infrared Survey Telescope for Astronomy

... 1 available ; Nd:YAG based laser transmitter; 24 W average power (100 MW peak power ) at 532 nm; Additional output at 1064 nm fundamental (currently 355 nm is not available ); 6 ns pulse width; 40 Hz operation; 80 cm diameter Cassegrain telescope receiver; Fully pointable (but generally aircraft restricted to within 45 o of zenith; Electronic gated photomultiplier tube detection with low-altitude chopper; Data collection is ... F. Airglow Mirror Systems: . ...

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• Visitors Tourists -- The AO Optical Laboratory
• Computing LST Rise and Set Times at AO
• The AO Optical Laboratories National Astronomy and Ionosphere Center (Arecibo

... Bojan Nikolic web pages home . ... I've posted a simple command-line program to compute the dispersive path delay due to the atmosphere using ATM (more precisely my re-packaging AATM). ... I had not appreciated that even at 330GHz, the dispersive wet delay is about 10% of the non-dispersive wet delay. Please enable JavaScript to view the comments powered by Disqus. blog comments powered by Disqus . Copyright 2012, Bojan Nikolic feedback welcome ...

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• Computing atmospheric absorption with AATM Bojan Nikolic web pages (r. 329)
• ALMA Phase Calibration Techniques at the Cavendish Astrophysics Group
• Astrophysics Group Available research projects/areas

... Stellar Evolution is driven entirely by the never ending battle between Pressure and Gravity . As imbalances are reached, the star is driven to find a new Energy source. ... Pressure and gravitational forces are equal, the star is stable and its core is sufficiently hot to fuse Hydrogen into Helium More about main sequence stars . ... The luminosity generated by the core fusion of Helium into Carbon is far greater than the shell luminosity associated with the fusion of Hydrogen into Helium. ...

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• Astronomy HyperText Book: Interstellar Medium
• Astronomy 123 Spring 1996
• Physics 410/510 Observational Cosmology

SAI 175 anniversary . ... Moscow University . Search for in SAI Moscow University Search for in Russian astronomical resources . ... SAI Astronomical Databases . ... Browse SAI Software archive(ftp.sai.msu.su) . ASTRONET.RU - Russian Astronomical Network (available in translit also) . ... SAI Supernovae Research Group . ... Department of the Galaxy and Variable Stars (in Russian) . Sternberg Astronomical Institute Seminars . ... All-Russian Astronomical Olympiad (in Russian) . ...

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• APOD: June 16, 1995 - Neutron Star Earth
• GALILEO READY FOR CLOSE FLYBY OF JUPITER'S BIGGEST MOON
• The Network Time Protocol (NTP) Distribution

LOFAR in Australia ­ A Brief Engineering Perspective By Dr Peter J Hall, CSIRO SKA/LOFAR Program Leader 6 November, 2002 Background LOFAR (LOw Frequency ARray) is a proposed radio telescope designed to operate in the approximate frequency range 10 - 250 MHz. ... In both cases, the instruments would be built and operated by international consortia; Australia is a founding member of the 11-participant SKA consortium and may join the USA and Europe in the LOFAR endeavour. ...

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• ATNF MNRF Projects
• Science with NIFS, Australia's First Gemini Instrument
• ATNF Colloquium