• Title/Summary/Keyword: Remote Observatory

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Development and Application of Remote Observatory System for Elementary School Gifted Students in Science (초등과학영재를 위한 원격천문대 시스템의 개발 및 적용)

  • Lee, Jaeho;Baek, Sang Ho
    • Journal of Gifted/Talented Education
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    • v.25 no.5
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    • pp.697-709
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    • 2015
  • This paper aims at shaping remote observatory system environment for schools, developing astronomical observation program using that system and applying it to science-gifted elementary students in order to figure out effects on their scientific investigation ability and attitude. in order to figure out effects of astronomical observation program using remote observatory program on scientific investigation ability and attitude of science-gifted elementary students, test was conducted on gifted students class of 5th grade in A Elementary School(15) and those of 5th grade in B Elementary School(20). The summary of this paper's results are as follows. First, in order to compose remote observatory system, an astronomical telescope available for remote control to transfer actual observed images in real-time was manufactured. Second, learning program for using remote observatory system wad developed by selecting contents through analysis of the curriculum. Third, in order to figure out effects of astronomical observation program using remote observatory program on scientific investigation ability and attitude of science-gifted elementary students. As a result, both of basic investigation ability and integrated investigation abilit, sub-elements of scientific investigation ability, showed significant differences and scientific investigation ability combining basic and integrated investigation abilities showed significant differences as well. Effects of astronomical observation program applying remote observatory also showed significant differences and its sub-elements, openness, collaboration, patience and creativeness did not show significant differences while curiosity, critics and volunteering showed significant differences.

REMOTE OBSERVATION SYSTEM ON WORLD WIDE WEB (WWW를 이용한 원격관측시스템)

  • PARK BYEONG-GON;YUK IN-SOO;HAN INWOO;KIM SEUNG-LEE;CHUN MOO-YOUNG;SEONG HYEON-CHEOL
    • Publications of The Korean Astronomical Society
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    • v.13 no.1 s.14
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    • pp.75-84
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    • 1998
  • We present the development of a remote observation system runnig on world wide web (WWW). The system consists of a 30cm Schmidt Cassegrain telescope and ST-7 CCD camera. We built the controllers and drivers of the telescope and the control softwares including the network control. The self-developed techniques in the hard wares and softwares can be applied to other projects in Korea. Observers can access the system via WWW home page, to reserve observation times, to send control commands, to retrieve images and various information useful for observation. This system can be widely used by students and amateur astronomers as well as professional astronomers who need a lot of small telescope time.

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InSAR Studies of Alaska Volcanoes

  • Lu Zhong;Wicks Chuck;Dzurisin Dan;Power John
    • Korean Journal of Remote Sensing
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    • v.21 no.1
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    • pp.59-72
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    • 2005
  • Interferometric synthetic aperture radar (InSAR) is a remote sensing technique capable of measuring ground surface deformation with sub-centimeter precision and spatial resolution in tens-of­meters over a large region. This paper describes basics of InSAR and highlights our studies of Alaskan volcanoes with InSAR images acquired from European ERS-l and ERS-2, Canadian Radarsat-l, and Japanese JERS-l satellites.

DESIGN CONCEPT FOR THE RETROFIT KAO 1M ROBOTIC TELESCOPE

  • Han, Won-Yong;Mack, Peter;Park, Jang-Hyun;Jin, Ho;Lee, Woo-Baik;Lee, Chung-Uk
    • Journal of Astronomy and Space Sciences
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    • v.17 no.2
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    • pp.211-220
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    • 2000
  • Korea Astronomy Observatory(KAO) is working to retrofit its 1m robotic telescope in collaboration with a company (ACE, Astronomical Consultants & Equipment). The telescope system is being totally refurbished to make a fully automatic telescope which can operate in both interactive and fully autonomous robotic modes. Progress has been made in design and manufacturing of the telescope mount, mechanics, and optical performance system tests are being made for re-configured primary and secondary mirrors. The optical system is designed to collect 80% incident light within 0.5 arcsec with f/7.5 Ritchey-Chretien design. The telescope mount is an equatorial fork with a friction drive system. The design allows fully programmable tracking speeds with typical range of 15 arcsec/sec with accuracy of $\pm5$ arcsec/hour. The mount system has integral pointing model software to correct for refraction, and all mechanical errors and misalignments. The pointing model will permit positioning to better than 30 arcsec RMS within $75^{\circ}$ from zenith and 45 arcsec RMS elsewhere on the sky. The software is designed for interactive, remote and robotic modes of operation. In interactive and remote mode the user can manually enter coordinates or retrieve them from a computer file. In robotic mode the telescope controller downloads the coordinates in the order determined by the scheduler. The telescope will be equipped with a CCD camera and will be accessible via the internet.

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InSAR Studies of Alaskan Volcanoes

  • Lu Zhong;Wicks Chuck;Dzurisin Dan;Power John
    • Proceedings of the KSRS Conference
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    • 2004.10a
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    • pp.47-52
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    • 2004
  • Interferometric synthetic aperture radar (InSAR) is a remote sensing technique capable of measuring ground surface deformation with sub-centimeter precision and spatial resolution in tens-of-meters over a large region. This paper highlights our on-going investigations of Aleutian volcanoes with SAR images acquired from European ERS-1 and ERS-2, Canadian Radarsat-l, and Japanese JERS-l satellites.

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WINDSCREEN INSTALLED AT THE BOAO 1.8M TELESCOPE DOME (보현산천문대 1.8m 망원경 돔의 방풍막 설치)

  • KIM SEUNG-LEE;SEONG HYEON-CHEOL;YUK IN-SOO;NOH JIN-HYUNG
    • Publications of The Korean Astronomical Society
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    • v.13 no.1 s.14
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    • pp.65-73
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    • 1998
  • We installed windscreen at the BOAO 1.8m telescope dome, in order to reduce the degradation of image Quality under strong wind larger than 8m/sec. The windscreen was designed on the basis of that installed at the MSSSO 2.3m telescope dome in Australia. We developed control system (remote control and user program) of the windscreen, being able to operate the windscreen at observation room. We tested the performance of the windscreen under strong wind of 6-15m/see. Tracking error of the telescope, especially in altitude-axis, was greatly decreased when the windscreen was used. Standard deviation of the error was estimated to be less than 0.3arcsec, which has little effect on image quality.

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Development of Remote Control System for KNUO 16 (공주대학교 천문대 16인치 반사망원경의 원격 제어 시스템 구축)

  • Kim, Chil-Young;Chung, Jung-In;Kim, Jong-Hun;Kim, Hyouk;Jang, Bi-Ho;Kim, Hee-Soo
    • Journal of the Korean earth science society
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    • v.24 no.5
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    • pp.456-466
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    • 2003
  • We developed a remote control system for the 16" reflecting telescope at KNUO (Kongiu National University Observatory). This system is a close loop system. The electronic control part used TCS-196 of the Korea Astronomy Observatory, the mechanical part was developed directly in this research. The pointing accuracy of this system was ${\pm}$50" in the hour angle direction, ${\pm}$40" in the declination direction after mount modeling. The tracking accuracy was about 1"/min. This pilot test result means that this system is suitable for research or education of astronomical fields.

A Study on Effective Management Method of the Flood Forecast System using PDA (PDA를 활용한 홍수예보시스템의 효율적 관리방안에 대한 연구)

  • Jung, Seung-Back;Yang, Seung-In
    • The KIPS Transactions:PartA
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    • v.17A no.4
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    • pp.197-202
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    • 2010
  • The recorder at observatory can save the measured data from water gauge and rain gauge at an interval of five minutes. And then, the RTU (Remote Terminal Unit) in observatory sends the measured data in the recorder to the TM (Telemetering) in FCO (Flood Control Office) at an interval of ten minutes using VHF or satellite communication. But the transmitted data is not the stored data at the recorder, it is just data that is measured at an interval of ten minutes. In the FCO, the transmitted data is analyzed in order to forecast the flood. And also one of the most important things is the maintenance of an observatory. In this paper, an effective management system for the flood forecast is proposed. It uses the CDMA and the Blutooth technology on PDA. The proposed system is very portable, and also easily able to send the data stored at the recorder in observatory to TM in FCO without RTU. And it allows us to view remotely the data of other observatories by downloading from the FCO. Hence the system can do efficiently the maintenance of observatory without wasting manpower and time.

Dual Diversity over Correlated Ricean Fading Channels

  • Bithas Petros S.;Sagias Nikos C.;Mathiopoulos P. Takis
    • Journal of Communications and Networks
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    • v.9 no.1
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    • pp.67-74
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    • 2007
  • The performance of dual diversity receivers operating over correlated Ricean fading channels is analyzed. Using a previously derived rapidly converging infinite series representation for the bivariate Ricean probability density function, analytical expressions for the statistics of dual-branch selection combining, maximal-ratio combining, and equal-gain combining output signal-to-noise ratio (SNR) are derived. These expressions are employed to obtain novel analytical formulae for the average output SNR, amount of fading, average bit error probability, and outage probability. The proposed mathematical analysis is used to study various novel performance evaluation results with parameters of interest the fading severity, average input SNRs, and the correlation coefficient. The series convergence rate is also examined verifying the fast convergence of the analytical expressions. The accuracy of most of the theoretical performance evaluation results are validated by means of computer simulations.