Superresolution of ultraviolet Betelgeuse image

Masafumi Kawagoe; Noriaki Miura

doi:10.1117/12.668313

20 January 2006 Superresolution of ultraviolet Betelgeuse image

Masafumi Kawagoe, Noriaki Miura

Proceedings Volume 6027, ICO20: Optical Information Processing; 602733 (2006) https://doi.org/10.1117/12.668313
Event: ICO20:Optical Devices and Instruments, 2005, Changchun, China

Abstract

We apply some superresolution techniques to ultraviolet Betelgeuse images observed with the Hubble Space Telescope (HST). Betelgeuse images used here were observed from 1995 to 1999. The profile of Betelgeuse drastically changed during this period, and bright areas (hotspots) sometime appeared on its surface. Their sizes were comparable to the diffraction limit of the HST. Thus, to obtain information on Betelgeuse, the improvement of the resolution is necessary. Through applying superresolution methods to observed images, we clarify their utilities in the analysis of Betelgeuse images. We obtain the positional information on hotspots from superresolved images, and then carry out model fitting of Betelgeuse profiles. We describe the results of model fitting.

Citation Download Citation

Masafumi Kawagoe and Noriaki Miura "Superresolution of ultraviolet Betelgeuse image", Proc. SPIE 6027, ICO20: Optical Information Processing, 602733 (20 January 2006); https://doi.org/10.1117/12.668313

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