Hcsdt pages with hifijide software installer passwd protected. The 4096point calibration took almost 8 hours and over 10,000 readings to finish. Centres hifi, pacs and spire and the nhsc jointly manage and contribute to the herschel data. Jan 21, 2014 the effects of the herschel telescope and the spire instrument are removed during data reduction using relative spectral response calibration curves and emission models. Inflight calibration of the hifi diplexers springerlink. Herschel hifi water line survey in the lowmass proto.
Miriam rengel researcher maxplanck institute for solar. Hifi pipelines and data products institute for astronomy. Knowledgebase powered by kayako help desk software. Ronan higgins research scientist university of cologne. Hifi obs upload procedure 2009 herschel hifi icu obs software user manual 2009 hifi obs software release notice 2009 performance and calibration.
Hifi status report by carolyn mccoey university of waterloo hifi calibration uncertainty in the early phases of the herschel mission, the absolute calibration requirement of hifi was set at 10%, with a goal of 3%. The data processing pipeline for the herschelhifi instrument. The herschelheterodyne instrument for the farinfrared hifi. Filling herschelhifi and alma data into gildas alma to. In the framework of the aivilt assembly, integration and verification. Hifi pv progress and pv student work assignments and outstanding hifi calibration issues passwd. The hifi pipeline processed data from all hifi observing modes within the herschel automated processing environment as. I was also responsible for maintaining webbased documents pertaining to all aspects of herschelhifi calibration and data products, and in collaborating to the editing of the hifi handbook. Automated recognition of herschel hifi fits level 2. Experience in data analysis focused on herschel hifi calibration responsabilities include test software campaigns, creation and maintenance of documentation for astronomers, and investigations of quality assessment of final products with hifi. Spire and pacs had imaging spectrometers that provide spatial information, while hifi resolved with very high spectral resolution, but only one line at a time and in only one beam on the sky. Part of the advantage of having speaker calibration software is being able to use the tools to do some of the tasks for you, such as autotune. Observers have all software and can run pipelines on lapdesktop.
Hifi observing modes document based on the denition of esa herschel pointing modes. Derivation of sideband gain ratio for herschel hifi 2017 performance. Canadian herschelhifi consortium number 31 autumn 2012. The herschel space observatory was a space observatory built and operated by the european space agency esa. All hifi products are publicly accessible through the herschel science archive. Canadian herschel hifi consortium number 31 autumn 2012. One of our main targets of investigationis the l1448mm out. The hifi interactive dp environment is part of the hcss, and is being used during prelaunch instrument tests and then during operations by calibration scientists.
The herschel common science system hcss software accompanied the development of the herschel mission through all phases of development. Some excellent news to report the hifi instrument on herschel the high resolution spectrometer has been successfully switched on after lying dormant for 4 months, after suffering an unwanted voltage peak in the electronic system of hifi, which. Joint almahifi calibration meeting 19 december 2002 they span most of the future hifi core targets osolar system bodies. It doesnt produce pictures of stars and galaxies, but rather extremely detailed spectra of their atoms and molecules. Hs3f hifi spectral surveys of star forming regions herschel gt key program old grenoble team pages passwd protected new grenoble team pages. The framework for the frequency calibration description of herschel hifi is given in 11. A multipath farinfrared and submillimetre gas cell for spectral tests of herschelhifi d.
Hifi s frequency range is spread over 7 mixer bands. Hifi instrument jet propulsion laboratory herschel mission. The three instruments were designed to compliment each other. A multipath farinfrared and submillimetre gas cell for. Filling herschelhifi and alma data into gildas alma to gildas poster. Researcher maxplanck institute for solar system research august 2005 heute 14 jahre 3 monate. Dpu runs the onboard software interfaces with the spacecraft for commanding and telemetry. About a dozen of isolated observations required reprocessing with the following software version 14. The data processing pipeline for the herschel hifi.
Herschelhifi instrument performance verification tests and development of data calibration and analysis software collaboration with members of the hifi instrument control center. We present the evolution of the methods used to derive the relative spectral response calibration curves for the spire fts. Broadband analysis techniques for herschelhifi spectral. Hifi calibration and observing modes observing modes for aots basic observing modes in. The hifi pipeline processed data from all hifi observing modes within the herschel automated processing environment as well as within an interactive environment. The data from each observation had to be converted from raw telemetry into calibrated products and were included in the herschel science archive. Calibration software and calibration files the combination of coded algorithms and instrument characterisation files e. Jan 16, 2014 hifi is a heterodyne spectrometer aboard the herschel space observatory, providing highspectralresolution capabilities. Hifis frequency range is spread over 7 mixer bands. Herschel hifi herschel ready for launch ariane 5 enclosing herschel and planck. Gottingensenior scientistex herschelhifi calibration scientistjuiceswi submillimetre wave.
Designing for software reuse the herschel common science. A common software framework was developed to best support the use cases required by the instrument teams and by the general astronomers. Hifi observers manual herschel science centre home. An extensive program was set to enable such highquality calibration. Current software for herschel allows better spectral corrections spire and pacs.
Hifi calibration tree, spurs calibration product version 15. Hifi pipelines and data products how to run these pipelines. Derivation of sideband gain ratio for herschelhifi 2017 performance. Hifi spectroscopy of lowlevel water transitions in m82. View sylvie f beaulieu phds profile on linkedin, the worlds largest professional community. This useful software has been packaged up in the format of a hipe plugin, which is easy to install and will autoupdate when a new version of the plugin is available. In the case of speaker calibration software, tools like tone generator software can be used to help you adjust the tone of the sounds to improve their. With the customizable pipeline, hifi was able to support robust interactive data analysis workflows with a small amount of additional complexity in the pipeline software. Here you will find more detailed and more technical hifi documentation that will give you deeper insight into the instrument, its data and data products and its operation. Herschelhifi data were already readable by class after conve rsion int o specific fits file by the hiclass task. However, it is possible to have updates to the calibration data in between major releases of the software as the software and data are independent of each other, in the table below the hipe or the od from which the. Welcome to the hifi instrument and calibration page. Contrary to earlier missions the herschel software systems were designed and implemented in such a way that all mission phases used the same software for instrument commanding and data processing. This document presents the terminology related to this topic, and recalls the principles and parameters to consider for the hifi frequency calibration.
Hifi is a heterodyne spectrometer aboard the herschel space observatory, providing highspectralresolution capabilities. Calibration of the herschel hifi instrument using gas cell. Raw and calibrated data from pacs, spire, and hifi. Continuum reproducibility on hifi monitoring 3x3 raster maps 2014 alternative calibration schemes. The heterodyne instrument for the far infrared hifi was launched aboard the herschel space telescope on the 14th of may 2009. Of its seven frequency bands, four bands 3, 4, 6, and 7 employ martinpuplett diplexers to combine sky signal and local oscillator at the two linear polarizations h and v, prior to feeding them into the mixers receivers. Broadband analysis techniques for herschelhifi spectral surveys of chemically rich starforming regions.
Fringes, caused by standing waves, may be present in hifi spectra. Calibrating hifi data involved converting raw instrument out. We have collected scripts from various sources around the hifi icc that have proved useful to users when reducing their data. Designing for software reuse the herschel common science system by peter roelfsema the development and operation of instruments in scientific satellites requires much software, to support instrument and satellite tests, for calibration and for scientific data gathering and analysis. The standard class sections general, position, spectroscopy, calibration are filled from the fits header parameters. Inorbit performance of herschelhifi chalmers publication library. The hifi data processing pipeline was developed to systematically process diagnostic, calibration and astronomical observations taken with the hifi science instrument as part of the herschel mission. The kbs available data rate allows all photometer or spectrometer detectors to be sampled and the data transmitted to.
The hifi instrument on the herschel space observatory performed over. In a nutshell, the new filler automatically recognizes the herschelhifi fits level 2. The data processing pipeline for the herschel 1 hifi. Automated recognition of herschelhifi fits level 2. A webbased resource dedicated to hifi data processing can be found here. After a successful qualification and a prelaunch tbtv test program, the flight instrument is now inorbit and completed. It is impossible to ignore the speaker room interface if good sound is to be achieved. Herschel hifi instrument performance verification tests and development of data calibration and analysis software collaboration with members of the hifi instrument control center. You will find here a set of toplevel information about the hifi instrument and its characteristics, together with recommendations on how to best exploit the archival data offered for this instrument in the herschel science archive hsa. We used the values derived from the bolometer models that are listed in version 23 of the flux calibration table, which are derived from models of the bolometer. Large multinational development effort in java with 5105 lines of code and 200 contributors functions. The calibration reference schemes available to astronomers through the herschel observation planning tool hspot. The data from each observation had to be converted from raw telemetry into calibrated products and were included in the herschel science. Experience in data analysis focused on herschelhifi calibration responsabilities include test software campaigns, creation and maintenance of documentation for astronomers, and investigations of quality assessment of final products with hifi.
The hifi data processing pipeline was developed to systematically process diagnostic, calibration and astronomical observations taken with the hifi science instrumentas part of the herschel mission. It was active from 2009 to 20, and was the largest infrared telescope ever launched, carrying a 3. Updates to the hifi calibration data are generally concurrent with the release of each major version of the hcss hifi software. The calibration of an instrument consists of two tasks. The intensity calibration for hifi 2003 spatial calibration framework document 2003 spectral calibration framework document 2003 hifi beam release note for astronomers 2014 hifi inflight cal accuracy, d. Herschel spire fts relative spectral response calibration.
The same software can be used by the general astronomical community to reprocess any standard hifi observation. All changes included in this release are highlighted in the whats new in hipe page. Units are antenna temperature t a derived from a chopperwheel calibration scheme. A modular software design allowed components to be easily added, removed, amended andor extended as the understanding of the hifi data developed during and after mission operations. Conversion to jy or t mb task in hipe software but see note. The hifi pipeline software, supporting auxiliary and calibration data products were the end result of accomplishing the goal of providing high quality observational data.
Calibration of the color was a much longer process. Hifi instrument and calibration page for archive users. Pdf calibration of the herschel hifi instrument using gas. The following phases can be iden tified as relevant for the instrument performance. Nasa herschel science center science community wiki hifi. Calibration of the grayscale for each took around 1520 minutes using the c6 colorimeter. Care with flux extraction different extractors can give notably different. In multichannel the best solution is to pick a product that incorporates the required technology in its box instead of purchasing external products. Participated on the in flight commisioning of the hifi spectrometer on board the herschel space observatory.
Psfs, spectral responses, photometer filter curves, etc turned into the instrument pipelines. Since hifis calibration is still preliminary, we used the theoretical predictions based on the herschels expected surface accuracy and the geometrical aperture size to convert the antenna temperatures to. Hifi science user requirements compliance matrix 2008 software. A dedicated herschel section is added to the class data format in order to attach.
Teyssier srongroningenesa, landleven 12, 9747 ad groningen, the netherlands. Marston herschel science centre, instrument and calibration scientist. Herschel userprovided data key program and open time. This meant that the concepts for full operations had to be designed very early. The herschel science ground segment hsgs consists of five elements. Predictive simulations in preparation for the launch of the herschel space telescope.
The hifi instrument on the herschel space observatory performed over 9100 astronomical observations, almost 900 of which were calibration observations in the course of the nearly fouryear herschel mission. Documents on the detailed documents on design and operations are available from the herschel science centre hsc and the hifi instrument control centre at sron, groningen, the netherlands hifi icc who are responsible for the safety and calibration of hifi during operations. The hifi pipeline processed data from all hifi observing modes within the herschel automated processing environment, as well as, within an interactive environment. Updates to the hifi calibration data are generally concurrent with the release of each major version of the hcsshifi software. With the largest mirror to have ever flown in space, 3. Esas herschel space observatory may have ceased its observations of the cosmos on 29 april 20, but the intervening years have been a hive of activity as all teams involved in this great mission strove to provide the best calibrated data and new data products for the worldwide community of astronomers eager to explore new cosmic territory. This software makes the local thermodynamic equilibrium lte approximation, which assumes that all of the energy level populations for a given spatial component can be described by a boltzmann distribution. Herschel interactive processing environment hipe the current hipe release is version 14. The same software can be used by the general astronomical. Hifi covered 4801250 and 14101910 ghz which corresponds to about 157625 microns. Additional information can be found in the hifi instrument and calibration.
Herschel science archive and handy ipacirsa interface. The hcss and its instrument dp environments will be available to users. Calibration scientist sron netherlands institute for space research. Hifi instrument the heterodyne instrument for the farinfrared hifi is a very high resolution heterodyne spectrometer.
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