Shuttle PRCS plume contamination analysis for Astro-2 mission

The Astro-2 mission scheduled for Jan. 1995 flight is co-manifested with the Spartan experiment. The Astro instrument array consists of several telescopes operating in the UV spectrum. To obtain the desired 300 observations with the telescope array in a shorter time than the Astro-1 mission, it will be necessary to use the primary reaction control system (PRCS) rather than just the Vernier reaction control system. The high mass flow rate of the PRCS engines cause considerable concern about contamination due to PRCS plume return flux. Performance of these instruments depends heavily on the environment they encounter. The ability of the optical system to detect a remote signal depends not only on the intensity of the incoming signal, but also on the ensuing transmission loss through the optical train of the instrument. Performance of these instruments is thus dependent on the properties of the optical surface and the medium through which it propagates. The on-orbit contamination environment will have a strong influence on the performance of these instruments. The finding of a two-month study of the molecular contamination environment of the Astro-2 instruments due to PRCS thruster plumes during the planned Astro-2 mission are summarized

Implementation of PhotoZ under Astro-WISE - A photometric redshift code for large datasets

We describe the implementation of the PhotoZ code in the framework of the Astro-WISE package and as part of the Photometric Classification Server of the PanSTARRS pipeline. Both systems allow the automatic measurement of photometric redshifts for the millions of objects being observed in the PanSTARRS project or expected to be observed by future surveys like KIDS, DES or EUCLID.Comment: Accepted for publication in topical issue of Experimental Astronomy on Astro-WISE information system, references update

The Astro-WISE approach to quality control for astronomical data

We present a novel approach to quality control during the processing of astronomical data. Quality control in the Astro-WISE Information System is integral to all aspects of data handing and provides transparent access to quality estimators for all stages of data reduction from the raw image to the final catalog. The implementation of quality control mechanisms relies on the core features in this Astro-WISE Environment (AWE): an object-oriented framework, full data lineage, and both forward and backward chaining. Quality control information can be accessed via the command-line awe-prompt and the web-based Quality-WISE service. The quality control system is described and qualified using archive data from the 8-CCD Wide Field Imager (WFI) instrument (http://www.eso.org/lasilla/instruments/wfi/) on the 2.2-m MPG/ESO telescope at La Silla and (pre-)survey data from the 32-CCD OmegaCAM instrument (http://www.astro-wise.org/~omegacam/) on the VST telescope at Paranal.Comment: Accepted for publication in topical issue of Experimental Astronomy on Astro-WISE information syste

Vsop2/Astro-G Project

We introduce a new space VLBI project, the Second VLBI Space Observatory Program (VSOP2), following the success of the VLBI Space Observatory Program (VSOP1). VSOP2 has 10 times higher angular resolution, up to about 40 micro arcseconds, 10 times higher frequency up to 43 GHz, and 10 times higher sensitivity compared to VSOP1. Then VSOP2 should become a most powerful tool to observe innermost regions of AGN and astronomical masers. ASTRO-G is a spacecraft for VSOP2 project constructing in ISAS/JAXA since July 2007. ASTRO-G will be launched by JAXA H-IIA rocket in fiscal year 2012. ASTRO-G and ground-based facilities are combined as VSOP2. To achieve the good observation performances, we must realize new technologies. They are large precision antenna, fast-position switching capability, new LNAs, and ultra wide-band down link, etc.. VSOP2 is a huge observation system involving ASTRO-G, ground radio telescopes, tracking stations, and correlators, one institute can not prepare a whole system of VSOP2. Then we must need close international collaboration to get sufficient quality of resultant maps and to give a sufficient quantity of observation time for astronomical community. We formed a new international council to provide guidance on scientific aspects related of VSOP2, currently called the VSOP2 International Science Council (VISC2).Comment: 10 pages, 9 figures, proceedings of The Universe under the Microscope Astrophysics at High Angular Resolutio

Astro-WISE processing of wide-field images and other data

Astro-WISE is the Astronomical Wide-field Imaging System for Europe. It is a scientific information system which consists of hardware and software federated over about a dozen institutes throughout Europe. It has been developed to exploit the ever increasing avalanche of data produced by astronomical surveys and data intensive scientific experiments in general. The demo explains the architecture of the Astro-WISE information system and shows the use of Astro-WISE interfaces. Wide-field astronomical images are derived from the raw image to the final catalog according to the user's request. The demo is based on the standard Astro-WISE guided tour, which can be accessed from the Astro-WISE website. The typical Astro-WISE data processing chain is shown, which can be used for data handling for a variety of different instruments, currently 14, including OmegaCAM, MegaCam, WFI, WFC, ACS/HST, etc.Comment: 4 pages, Procedings of ADASS XXI, ASP Conference Serie

ПОЄДНАННЯ ГРІД-ТЕХНОЛОГІЙ ASTRO-WISE І EGEE

В даній статті описано інтеграцію Грід-рішення, що реалізоване в інформаційній системі Astro-WISE з застосуванням EGEE Grid і портування програмних додатків Astro-WISE на EGEE. Astro-WISE це середовище, що складається з апаратного та програмного забезпечення. Описані переваги та недоліки цих технологій. Показано архітектуру Astro-WISE Grid, визначено проблеми для інтеграції Грід-інфраструктур і вирішення цих проблем. Причиною для об'єднання Astro-WISE і EGEE є впровадження міжнародних стандартів, які використовуються EGEE Грід в систему Astro-WISE, який полегшує будь-яке майбутнє підключення до інших мереж.Ключові слова: Грід-системи, інформаційна система, інтеграція, розширення можливостей, переваги.студент, Кливода И.В. соединение Грид-технологий ASTRO-WISE и EGEE / Национальный технический университет Украины «Киевский политехнический институт», Украина, КиевВ данной статье описано интеграцию Грид-решения, реализованое в информационной системе Astro-WISE с применением EGEE Grid и портирование приложений Astro-WISE на EGEE. Astro-WISE это среда, состоящая из аппаратного и программного обеспечения. Описанные преимущества и недостатки этих технологий. Показано архитектуру Astro-WISE Grid, определены проблемы для интеграции Грид-инфраструктур и решения этих проблем. Причиной для объединения Astro-WISE и EGEE является внедрение международных стандартов, используемых EGEE Грид в систему Astro-WISE, который облегчает любое будущее подключения к другим сетям.Ключевые слова: Грид-системы, информационная система, интеграция, расширение возможностей, преимущества.student, Klivoda I.V. Confluence Grid Technologies: Astro-WISE and EGEE / National Technical University of Ukraine "Kyiv Polytechnic Institute", Ukraine, KievThis paper describes the integration of Grid solutions, implemented in the information system Astro-WISE using EGEE Grid and porting software applications Astro-WISE on EGEE. Astro-WISE is an environment that consists of hardware and software. Describe the advantages and disadvantages of these technologies. Architecture shown Astro-WISE Grid, defined problem to integrate Grid infrastructures and address these problems. The reason for the association Astro-WISE and EGEE is introduction of international standards used EGEE Grid in Astro-WISE, which facilitates any future connection to other networks.Keywords: Grid system, information system, integration, empowerment, benefits

Merging Grid Technologies

This paper reports the integration of the astronomical Grid solution realised in the Astro-WISE information system with the EGEE Grid and the porting of Astro-WISE applications on EGEE. We review the architecture of the Astro-WISE Grid, define the problems for the integration of the Grid infrastructures and our solution to these problems. We give examples of applications running on Astro-WISE and EGEE and review future development of the merged system