천문학회보 (The Bulletin of The Korean Astronomical Society)
- 제42권2호
- /
- Pages.85.1-85.1
- /
- 2017
- /
- 1226-2692(pISSN)
An Operating Software Development of A Prototype Coronagraph for The Total Solar Eclipse in 2017
- Park, Jongyeob (Korea Astronomy and Space Science Institute) ;
- Choi, Seonghwan (Korea Astronomy and Space Science Institute) ;
- Kim, Jihun (Korea Astronomy and Space Science Institute) ;
- Jang, Be-ho (Korea Astronomy and Space Science Institute) ;
- Bong, Su-Chan (Korea Astronomy and Space Science Institute) ;
- Baek, Ji-Hye (Korea Astronomy and Space Science Institute) ;
- Yang, Heesu (Korea Astronomy and Space Science Institute) ;
- Park, Young-Deuk (Korea Astronomy and Space Science Institute) ;
- Cho, Kyung-Suk (Korea Astronomy and Space Science Institute)
- 발행 : 2017.10.10
초록
We develop a coronagraph to measure the coronal electron density, temperature, and speed by observing the linearly polarized brightness of solar corona with 4 different wavelengths. Through the total solar eclipse on 21 August 2017, we test an operating software of a prototype coronagraph working with two sub-systems of two motorized filter wheels and a CCD camera that are controlled by a portable embedded computer. A Core Flight System (CFS) is a reusable software framework and set of reusable software applications which take advantage of a rich heritage of successful space mission of NASA. We use the CFS software framework to develop the operating software that can control the two sub-systems asynchronously in an observation scenario and communicate with a remote computer about commands, housekeeping data through Ethernet. The software works successfully and obtains about 160 images of 12 filter sets (4 bandpass filters and 3 polarization angles) during the total phase of the total solar eclipse. For the future, we can improve the software reliability by testing the software with a sufficient number of test cases using a testing framework COSMOS. The software will be integrated into the coronagraph for balloon-borne experiments in 2019.
키워드