... Up: Data Processing Systems . ... 314 Astronomical Data Analysis Software and Systems XIII, eds. F. Ochsenbein, M. Allen, & D. Egret (San Francisco: ASP), 800 . ... During early flight operation, the Chandra X-ray Observatory's Advanced CCD Imaging Spectrometer (ACIS) suffered degradation of charge transfer inefficiency (CTI) due to radiation induced charge trapping. ... We will discuss the impact of CTI on events, RMF and gain files. ... While ACIS reads out, it is still taking data. ...
... Up: Data Processing Systems . ... 314 Astronomical Data Analysis Software and Systems XIII, eds. F. Ochsenbein, M. Allen, & D. Egret (San Francisco: ASP), 768 . ... CARMA combines the existing OVRO and BIMA millimeter-wave arrays with the new SZA array at a high altitude site. ... The software system encompasses a monitor and control system, an archive, and an imaging pipeline. ... A tight coupling of the visibility data and the monitor data is an integral part of the system design. ...
... 314 Astronomical Data Analysis Software and Systems XIII, eds. F. Ochsenbein, M. Allen, & D. Egret (San Francisco: ASP), 720 . ... The Combined Array for Research in Millimeter-wave Astronomy (CARMA) will be the combination of the BIMA, OVRO, and SZA millimeter arrays, at a new high elevation site (7200', 2200 m). ... CARMA's monitoring system (CAM), is designed to collect monitor data periodically from a set of heterogenous systems and organize these monitor points hierarchically. ...
... Up: Control System . ... The antennas are grouped into five independently-controlled sub-arrays, which will be used for scientific observations, engineering, or maintenance. The sub-arrays are controlled by two components: the Sub-array Command Processor (SCP) and the Sub-array Tracker (SAT). ... The two control components of the sub-array are the Sub-array Command Processor (SCP) and the Sub-array Tracker (SAT). ... Each sub-array will have a dedicated SCP for handling all control input commands. ...
... Up: Large-Scale Data Management . ... Prospective users, instrumentation and location of the Atacama Large Millimeter Array (ALMA) all present its software developers with major challenges. ... The ALMA software needs to handle all phases in the life of an observing project, i.e. , 1) Proposal Preparation; 2) Proposal Review; 3) Program Preparation; 4) Dynamic Scheduling of Programs; 5) Execution of the Observations themselves; 6) Calibration & Imaging; and 7) Data Delivery & Archiving. ...
Next: Advances in Automated Algorithms For Morphological Classification of Galaxies Based on Shape Features . ... Yagi, M. 2003, in ASP Conf. ... I present a method to estimate fourth order cosine coefficient of Fourier harmonics, so called boxiness, from second and fourth order moments in Cartesian coordinate. The method is faster than traditional fitting method about by order and have enough accuracy for objects. ... The error is estimated by applying the code to simulated images. ...
... Starting from a grid of theoretical population synthesis models we constructed a set of model galaxies with a distribution of ages, metallicities and intrinsic reddening. ... We propose an optimization technique that combines active learning with an instance-based machine learning algorithm. ... In order to solve the problem more efficiently, we pose it as a learning problem, where a learning algorithm learns the reddening parameters , and with a forward model we compute . ... Let be the test set. ...
... The first XMM-Newton serendipitous source catalogue has been released on 2003 April 7. ... The database offers powerful tools to perform various kinds of scientific analysis, particularly designed to deal with links between catalogue sources and correlated entries extracted from many archival catalogues available at CDS and NED. ... The 33026 X-ray source detections relate to 28279 unique X-ray sources (SSC 2003). ... Vizier catalogues may also be queried around any X-ray or archival source. ...
... Coulais, A., Malaiz?, J., Giovannelli, J.-F., Rodet, T., Abergel, A., Wells, B., Patrashin, M., Kaneda, H., & Fouks, B. 2003, in ASP Conf. ... Physical models are used to reproduce and correct transient effects of infrared (IR) photo-detectors in time series after incoming illumination changes. ... We discuss detectors models (direct models) and transients corrections (inversion methods). ... One model was the Fouks model for the Si:Ga detectors. ... Com.) from another model (Fouks, 1992). ...
... Gratadour, D., Mugnier, L. M., & Rouan, D. 2003, in ASP Conf. ... We present a new, Maximum Likelihood (ML) based, method for the estimation of the shift between two images. ... The method was tested with simulations and was applied to the case of infrared astronomical imaging where the signal is usually very weak. ... A classical method to estimate the translation parameters is the linear cross-correlation of noisy images with a reference (Vanderlugt 1964, Kumar et al. ... 2003). ...
... Calabretta, M. R., Valdes, F., Greisen, E. W., & Allen, S. L. 2003, in ASP Conf. ... Of particular interest to the fields of astrometry and spectroscopy, the fourth in a series of papers defining conventions for encoding world coordinate information in FITS headers will consider the problem of representing small systematic errors, or distortions. ... Greisen, E. W., Valdes, F. G., Calabretta, M. R. & Allen, S. L. 2003, A&A, in preparation, Representations of spectral coordinates in FITS (Paper III) ...
... Previous: Generalized Linear Multi-Frequency Imaging in VLBI . ... At Astronomical Observatory of Valencia University (OAUV), CCD observations of asteroids and big planets satellites are obtained since 2001 with a big format camera and several telescopes. ... Software for comparison of single and overlapped CCD fields obtained at different epochs has been developed. ... After images measurement in CCD field, catalogue stars are identified and adjusted with images. ...
Next: Data Models in the VO: How Do They Make Code Better? ... Pirenne, B. 2003, in ASP Conf. ... In this review, the current status and expected evolution of data storage technologies in the next few years is considered in the light of the expected needs of constantly growing astronomical data volumes. Questions such as ``should we abandon tapes?'' and ``why don't we just transfer all data over the net?'', or ``Why do we give data out in the first place? ... Technology . ... Hard Disk . ...
Next: When the Observer isn't there: The OMP Feedback System . Up: Control System . ... The EMS implements algorithms as signal flow graphs, uses Matlab for standard algorithms and visualization, and uses ODBC (Open Database Connectivity) and databases for organizing pertinent data. ... Matlab can also interface with the GBT Monitor and Control system using a SOAP java client and XML parser, allowing Matlab to interact directly with the GBT, and pipe data back up into WiT. ...
Next: The CARMA Control System . ... Axelrod, T. A. & De La Pe?a, M. D. 2003, in ASP Conf. ... Due to the binocular nature of the telescope, there are unique requirements imposed on the telescope control system (TCS) to ensure the health and safety of the telescope, while also enabling observations in both independent and interferometric mode. ... A logical view of the LBT TCS subsystems, represented by rectangles, and the controllers, represented by rounded-corner rectangles, is shown in Figure 1 . ...
Next: NEWFIRM Software--System Integration Using OPC . Up: Control System . ... 314 Astronomical Data Analysis Software and Systems XIII, eds. F. Ochsenbein, M. Allen, & D. Egret (San Francisco: ASP), 732 . ... The software written for WFCAM includes a camera control and acquisition system, a survey definition system and instrument control systems. ... The Ultracam camera control system was developed at the UKATC as part of the Ultracam high speed photometry system for the University of Sheffield. ...
... The production of Planck simulated data belongs to a class of problems which could get a great deal of advantage from their distribution on to a Grid-enabled environment, and has been identified by the Planck community as an ideal application to evaluate the power of the European Grid infrastructure. ... The production of Planck simulated data has been identified as an ideal application to evaluate the power of the European Grid infrastructure in solving this class of problems. ...
... We present a new technique to segregate old and young stellar populations in galactic spectra using machine learning methods. We used an ensemble of classifiers, each classifier in the ensemble specializes in young or old populations and was trained with locally weighted regression and tested using ten-fold cross-validation. ... In this work we propose a Machine Learning (ML) method to determine the age of stellar populations in synthetic galactic spectra. ...