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The first principle is that you must not fool yourself. - Richard Feyman

What is FIMS (SPEAR)?

FIMS (SPEAR) is a dual-channel far-ultraviolet imaging spectrograph (“Short” wavelength channel 900-1150Å, “Long” wavelength channel 1350-1750Å, λ/Δλ ~ 550) with a large field of view (S-band, 4°×4´.6; L-band, 7°.4×4´.3), designed to observe diffuse FUV emission lines. FIMS is the primary payload on the first Korean science and technology satellite, STSAT-1, and was launched into ~ 700 km Sun-synchronous orbit on 2003 September 27.


The FIMS data is available at

Diffuse FUV continuum background

The FUV continuum background data is available here: fims_diffuse.tgz.

Please note that the new data set will be available soon.

A bright star catalog observed by FIMS/SPEAR

Published in Jo et al. 2016 (MNRAS 456, 417).

The data is available at


FIMS/SPEAR has been funded by the Korea MEST and NASA NAG5-5355. MEST supported KASI and KAIST, and calls the mission “FIMS.” NASA supported U.C. Berkeley, and calls the mission “SPEAR.”

© 2013 Seon, Kwang-Il