Development of KASI Solar Imaging Spectrograph

Details Development of KASI Solar Imaging Spectrograph Development of KASI Solar Imaging Spectrograph

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006pkas...21...51k&link_type=abstract

Publications of the Korean Astronomical Society (ISSN 1225-1534), Vol. 21, No. 2, p. 51 - 59 (2006)

Astronomy and Astrophysics

Astronomy

1

Instrument, Solar Imaging Spectroscopy

Scientific paper

We have successfully developed the KASI (Korean Astronomy and Space Science Institute) Solar Imaging Spectrograph (KSIS), which has been originally upgraded from the KASI solar spectrograph that was able to record solar spectra for a given slit region and to inspect the response function of narrow band filters. A prototype KSIS was developed in 2004 by using a scanning mirror in front of the spectrograph slit and a SBIG ST-8XE CCD camera. Its main disadvantage is that it took a long time (about 13 minutes) to scan a whole active region. In this work, we have upgraded the KSIS by installing a much faster Dalsa 1M15 CCD camera, which gives a data acquisition time of about 2.5 minutes. The software for KSIS was also improved for the new CCD camera on the basis of component-based development method. We have successfully made a test observation for a simple and small active region (AR10910) using the improved KSIS system. Our observations show that H-alpha images for several wavelengths have typical features in a sunspot as well as a H-alpha centerline image is quite similar to a BBSO H-alpha image, demonstrating the capability of the KSIS system.

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