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conference on advanced software and control for Astronomy

作者： Di Rico, Gianluca Ragni, Maurizio Corcione, Leonardo Giro, Enrico Fantinel, Daniela INAF Osservatorio Astron Collurania Teramo Terama Italy

ISBN: (纸本)0819463396

AMICA is a camera conceived to automatically acquire infrared astronomical images in the extreme environment of Dome C (T similar to -70 degrees C, p similar to 640 mbar). For this reason, hardware and software are specially designed. They must guarantee the correct execution of observing procedures, while performing a continuous monitoring of the environmental conditions, the instrument status and the observing parameters, and a real-time adjustment of them when required. All temperature-sensitive components will be placed in a thermally controlled rack. The environmental control inside it is assigned to a Programmable Logic controller (PLC). It is responsible, in particular, for the overall system start-up. Instrument status, mainly concerning vacuum level and temperatures inside the cryostat, is directly monitored by the local cPC, which sends instructions to the PLC in case of failure, in order to start appropriate restoring procedures. All hardware components are conceived to be easily and fast replaceable. Main tasks of the AMICA control software (ACS) are: telescope interaction, observation management, environment control, events handling, data storing. Because of the high frame rate, typical of infrared imaging, the acquisition system has been interfaced with an independent application (STS), to perform read-out electronics control, fast data processing (co-adding from chopping raw frames), parameters checking (such as exposure time, chopping frequency, etc.), and data output. The software design has a multithreading architecture, based on the Object Oriented approach and developed for Windows OS platforms.

关键词： Antarctica robotic telescopes infrared control software

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SNOWS:: Sierra Nevada Observatory Weather System

SNOWS:: Sierra Nevada Observatory Weather System

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conference on advanced software and control for Astronomy

作者： Costillo, Luis P. Ibanez, J. Miguel Aparicio, Beatriz Garcia, Antonio J. Inst Astrofis Andalucia Granada 18008 Spain

ISBN: (纸本)0819463396

The Observatorio de Sierra Nevada (OSN) is located at an altitude of 2800m at the Loma de Dilar in the Sierra Nevada mountain range, in the province of Granada, Spain. It is operated and maintained by the Instituto de Astrofisica de Andalucia (IAA-CSIC) and contains two Nasmyth telescopes with apertures of 1.5 and 0.9m and an Altazimuth telescope with an aperture of 0.6m. Given that the quality of the images and, indeed, the performance of the instruments are influenced by weather conditions, it would appear that the existence of a weather station capable of producing accurate descriptions is an essential component of any observatory. This is particularly true, however, in our case where, given the altitude, weather conditions at certain times of the year are especially harsh(1). For this reason, our observatory has required the installation of a robust weather station with easily replaceable sensors which can provide accurate and reliable measures of wind, temperature and humidity(2). At the same time, in order to avoid a complex topology of unmanageably long wires due to the distribution of a large number of sensors around the buildings, domes telescope mirrors and instruments, it has been necessary to implement a distributed system with several independent nodes connected to a CAN bus. This system is now in operation and running automatically at the OSN and provides all the data from sensors to the observatory control systems and to internet users. This paper gives a detailed description of the SNOWS project, including the development of the weather station, the software and hardware architecture, and the use of distributed nodes with a linear serial bus. The paper also provides some results regarding the wind, temperature and humidity sensors employed at the OSN.

关键词： Sensors telescopes Observatories Humidity Space telescopes Data acquisition Domes control systems Databases LabVIEW

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The James Webb Space telescope Integrated Science Instrument Module

The James Webb Space Telescope Integrated Science Instrument...

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conference on Space telescopes and instrumentation I - Optical, Infrared and Millimeter

作者： Greenhouse, Matthew A. Boyce, Leslye A. Glazer, Stuart D. Johnson, Eric L. McCloskey, John C. Shears, Lisa B. Sullivan, Pamela C. Voyton, Mark F. Goddard Space Flight Ctr Greenbelt MD 20771 USA

The Integrated Science Instrument Module of the James Webb Space telescope is described from a systems perspective with emphasis on unique and advanced technology aspects. The major subsystems of this flight element a... 详细信息

ISBN: (纸本)0819463302

关键词： JWST instrumentation

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MOPEX - A software package for astronomical image processing and visualization - art. no. 62740C

MOPEX - A software package for astronomical image processing...

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conference on advanced software and control for Astronomy

作者： Makovoz, David Roby, Trey Khan, Iffat Booth, Hartley CALTECH IPAC Spitzer Sci Ctr Pasadena CA 91125 USA

ISBN: (纸本)0819463396

We present MOPEX - a software package for astronomical image processing and display. The package is a combination of command-line driven image processing software written in C/C++ with a Java-based GUI. The main image processing capabilities include creating mosaic images, image registration, background matching, point source extraction, as well as a number of minor image processing tasks. The combination of the image processing and display capabilities allows for much more intuitive and efficient way of performing image processing. The GUI allows for the control over the image processing and display to be closely intertwined. Parameter setting, validation, and specific processing options are entered by the user through a set of intuitive dialog boxes. Visualization feeds back into further processing by providing a prompt feedback of the processing results. The GUI also allows for further analysis by accessing and displaying data from existing image and catalog servers using a virtual observatory approach. Even though originally designed for the Spitzer Space telescope mission, a lot of finictionalities are of general usefulness and can be used for working with existing astronomical data and for new missions. The software used in the package has undergone intensive testing and benefited greatly from effective software reuse. The visualization part has been used for observation planning for both the Spitzer and Herschel Space telescopes as part the tool Spot. The visualization capabilities of Spot have been enhanced and integrated with the image processing functionality of the command-line driven MOPEX. The image processing software is used in the Spitzer automated pipeline processing, which has been in operation for nearly 3 years. The image processing capabilities have also been tested in off-line processing by numerous astronomers at various institutions around the world. The package is multi-platform and includes automatic update capabilities. The software packag

关键词： image processing image visualization software reuse software integration

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Networking observers and observatories with Remote telescope Markup Language - art. no. 62700L

Networking observers and observatories with Remote Telescope...

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conference on Observatory Operations

作者： Hessman, Frederic V. Tuparev, Georg Allan, Alasdair Univ Gottingen Inst F Astrophys D-37077 Gottingen Germany

ISBN: (纸本)0819463353

Remote telescope Markup Language (RTML) is an XML-based protocol for the transport of the high-level description of a set of observations to be carried out on a remote, robotic or service telescope. We describe how RTML is being used in a wide variety of contexts: the transport of service and robotic observing requests in the Hands-On Universe (TM), ACP, eSTAR, and MONET networks;how RTML is easily combined with other XML protocols for more localized control of telescopes;RTML as a secondary observation report format for the IVOA's VOEvent protocol;the input format for a general-purpose observation simulator;and the observatory-independent means for carrying out request transactions for the international Heterogeneous telescope Network (HTN).

关键词： intelligent agents remote observing robotic service observations simulators software telescope networks Virtual Observatory XML

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advanced technology solar telescope optical design

Advanced technology solar telescope optical design

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conference on Ground-Based and Airborne telescopes

作者： Hansen, Eric Price, Ron Hubbard, Rob National Solar Observatory (United States)

ISBN: (纸本)0819463329

The advanced Technology Solar telescope (ATST) will be the most powerful solar telescope and the world's leading resource for studying solar magnetism that controls the solar wind, flares, coronal mass ejections and variability in the Sun's output. Development of this four-meter off-axis solar telescope has presented many optical design challenges including: support of both Nasmyth and flexible coude lab instrumentation, incorporation of an integrated adaptive optics system, thermal control of optics, and optical alignment of multiple off-axis conics. This paper gives an overview of the optical design, error budgeting, and the performance modeling done to ensure the telescope will satisfy its optical performance requirements.

关键词： solar telescope off-axis mirrors optical design error budgeting thermal control active optics adaptive optics quasi-static alignment

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The 1.4 meter lightweight carbon fiber mount for the Naval Prototype Optical Interferometer - art. no. 63060R

The 1.4 meter lightweight carbon fiber mount for the Naval P...

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conference on advanced Wavefront control - Methods, Devices, and Applications IV

作者： Andrews, Jonathan R. Restaino, Sergio R. Wilcox, Christopher C. Teare, Scott W. Martinez, Ty Clark, Jim Walton, Josh Romeo, Robert Martin, Robert Naval Research Lab. (United States) New Mexico Institute of Mining and Technology (United States) Composite Mirror Applications (United States)

ISBN: (纸本)081946385X

The portability of meter-class telescopes has been limited by the weight of the mirror, tube assembly and the mount required to provide pointing and tracking. The novel lightweight carbon fiber reinforced polymer telescopes being developed for array population at the Naval Prototype Optical Interferometer are orders of magnitude lighter than traditional telescopes. When combined with a lightweight carbon fiber mount, these telescopes will be easily transportable from one telescope station to another to change the interferometer baseline. The mount for a lightweight telescope is currently under development at Composite Mirror Applications, Inc. This paper reports on the design constraints of the mount, the scalability to larger aperture telescopes and the integration of sensors to measure the performance characteristics of this system during operation.

关键词： light weight telescope telescope mechanics interferometry

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Infrared guiding with faint stars with the wide-field infrared camera at CFHT

Infrared guiding with faint stars with the wide-field infrar...

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conference on advanced software and control for Astronomy

作者： Teeple, Douglas Riopel, Martin Baril, Marc Barrick, Gregory Albert, Loic Vermeulen, Tom Ward, Jeff Canada France Hawaii Telescope Corp Kamuela HI 96743 USA

ISBN: (纸本)0819463396

The Canada-France-Hawaii telescope (CFHT) is commissioning a new Wide field Infrared Camera (WIRCam) that uses a mosaic of 4 HAWAII-2RG near- infrared detectors manufactured by Rockwell. At the heart of the instrument is an On-Chip Guiding System (OCGS) that exploits the unique parallel science/guide frame readout capability of the HAWAII-2RG detectors. A small sub sample of each array is continuously read at a rate of up to 50 Hz while the integration of the science image is ongoing with the full arrays (read at a maximal rate of 1.4 s per full frame). Each of these guiding windows is centered on a star to provide an error signal for the telescope guiding. An Image Stabilizer Unit (ISU) (i.e. a tip-tilt silica plate), provides the corrections. A Proportional Integral Differential (PID) closed loop controls the ISU such that telescope tracking is corrected at a rate of 5 Hz. This paper presents the technical architecture of the guiding system and performance measurements on the sky in engineering runs with WIRCam with faint stars up to magnitude 14.

关键词： infrared controller software clocking guiding Hawaii-2RG

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Bioprocess control: Advances and challenges

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COMPUTERS & CHEMICAL ENGINEERING 2006年第10-12期30卷 1464-1475页

作者： Alford, Joseph S. Eli Lilly & Co Indianapolis IN 46285 USA

Most commercial process control tools and techniques used in the chemical process industries are applicable to bioprocesses (e.g. processes that make certain medicines). While bioprocesses include several different unit operations, the focus of most of this paper will be the control of bioreactors (i.e. fermentors) in which a near optimal environment is desired for microorganisms to grow, multiply, and produce a desired product. Bioreactor control provides special challenges due to significant process variability, the complexity of biological systems, the need, in many cases, to operate in a sterile environment, and the relatively few real-time direct measurements available that help define the state of the culture. This has led to some creative solutions as well as the identification of topics where further research and development and vendor software functionality are needed. (c) 2006 Elsevier Ltd. All rights reserved.

关键词： bioprocess control advanced process control data management bioprocess instrumentation alarm management

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advanced Technology Solar telescope: A progress report

Advanced Technology Solar Telescope: A progress report

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conference on Ground-Based and Airborne telescopes

作者： Wagner, J. Rimmele, T. R. Keil, S. Barr, J. Dalrymple, N. Ditsler, J. Goodrich, B. Hansen, E. Hegwer, S. Hill, F. Hubbard, R. Phelps, L. Price, R. Richards, K. Warner, M. National Solar Observatory (United States) National Optical Astronomy Observatory (United States) Air Force Research Lab. (United States)

ISBN: (纸本)0819463329

The four-meter advanced Technology Solar telescope (ATST) will be the most powerful solar telescope and the world's leading resource for studying solar magnetism that controls the solar wind, flares, coronal mass ejections and variability in the Sun's output. Development of a four-meter solar telescope presents many technical challenges (e.g., thermal control of the enclosure, telescope structure and optics). We give a status report of the ATST project (e.g., system design reviews, instrument PDR, Haleakala site environmental impact statement progress) and summarize the design of the major subsystems, including the telescope mount assembly, enclosure, mirror assemblies, wavefront correction, and instrumentation.

关键词： telescopes control systems Mirrors Wavefronts Adaptive optics Observatories control systems design Buildings Interfaces Solar telescopes

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