21 October 1996 Flight performance of the Far-Infrared Line Mapper (FILM)
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The far-infrared line mapper (FILM) is a far-infrared spectrometer and in one of four focal plane instruments of the infrared telescope in space (IRTS), FILM was designed for wide area intensity mapping of far-infrared emission from interstellar gas and dust in the galaxy. The targets are the [CII] 158 micrometer line of the ionized carbon, the [OI] 63 micrometer line of the oxygen atom, and the continuum emission at 155 and 160 micrometer from the interstellar dust grain. A cylindrically concave varied line-space grating and a linear array of stressed Ge:Ga were successfully developed and allowed us to make a compact spectrometer compatible to severe limitations of the small cryogenic telescope. The IRTS, onboard the space flyer unit (SFU), was launched by a HII rocket on March 18, 1995 and was recovered by a STS on January 13, 1996. The FILM worked very well during four weeks allocated for the IRTS observation and produced a lot of valuable data. The sensitivity and the spatial resolution for the [CII] line are an order of magnitude better than the previous work.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hiroshi Shibai, Takao Nakagawa, Shin'ichiro Makiuti, Hideo Matsuhara, Norihisa Hiromoto, Kenichi Okumura, Yasuo Doi, Takanao Toya, Haruyuki Okuda, "Flight performance of the Far-Infrared Line Mapper (FILM)", Proc. SPIE 2817, Infrared Spaceborne Remote Sensing IV, (21 October 1996); doi: 10.1117/12.255188; https://doi.org/10.1117/12.255188

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