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Accession number;99A0371718
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| Title;Development and Flight Performance of Tip-Tilt Mirror System for a Sounding Rocket Observation of the Sun. |
| Author;
SHIMIZU TOSHIFUMI
(Kokuritsu Tenmondai)
YOSHIDA TSUYOSHI
(Univ. of Tokyo, Grad. Sch.)
TSUNETA SAKU
(Kokuritsu Tenmondai)
SAKAO TARO
(Kokuritsu Tenmondai)
KANO RYOHEI
(Kokuritsu Tenmondai)
HARA HIROHISA
(Kokuritsu Tenmondai)
NAGATA SHIN'ICHI
(Univ. of Tokyo, Grad. Sch.)
KODEKI KAZUHIDE
(Mitsubishidenki Sentangisoken)
INOUE MASAO
(Mitsubishidenki Sentangisoken)
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Journal Title;Report of the National Astronomical Observatory of Japan
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Journal Code:F0086B
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ISSN:0915-6321
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VOL.4;NO.2;PAGE.43-58(1999)
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| Figure&Table&Reference; |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;A tip-tilt mirror (TTM) system was developed for the XUV Doppler telescope (XDT) on board an ISAS sounding rocket. The spatial resolution of the telescope is about 5", whereas the pointing stability is only .+-.0.3.DEG. with the rocket pointing control system. To achieve better than 5" stability on the focal plane of the telescope, the TTM system controls the tilt of the secondary mirror with fixed-coil magnetic actuators. The relatively large mirror (10cm diameter, 300g) can be driven in high frequency (<35Hz) with a wide stroke of .+-.0.5.DEG.. The control signal to stabilize focal-plane images is supplied by the position-sensitive detector (PSD) of a pin-hole telescope equipped inside XDT. Closed-loop controls are made with the on-board software on the DSP processor. TTM has a launch-lock mechanism to protect the two-axes flexial-pivot against high G vibration at the launch. The sounding rocket was successfully launched on 31 January 1998 from the Kagoshima Space Center of ISAS. TTM worked perfectly during the flight, and achieved better than 5" stability on the focal plane during CCD exposures. Several tens of unique XUV solar images were recorded with no blurring motion. (author abst.) |
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