期刊
SOLAR PHYSICS
卷 268, 期 1, 页码 103-123出版社
SPRINGER
DOI: 10.1007/s11207-010-9676-3
关键词
Adaptive optics; Balloon; Image stabilization; Instrumentation; Shack - Hartmann; Tip-tilt correction; Wavefront sensing
资金
- Bundesministerium fur Wirtschaft und Technologie through Deutsches Zentrum fur Luft- und Raumfahrt e.V. (DLR) [50 OU 0401]
- Max Planck Society (MPG)
- Spanish MICINN [ESP2006-13030-C06, AYA2009-14105-C06]
- NASA [NNX08AH38G]
This paper describes the wave-front correction system developed for the Sunrise balloon telescope, and it provides information about its in-flight performance. For the correction of low-order aberrations, a Correlating Wave-Front Sensor (CWS) was used. It consisted of a six-element Shack -aEuro parts per thousand Hartmann wave-front sensor (WFS), a fast tip-tilt mirror for the compensation of image motion, and an active telescope secondary mirror for focus correction. The CWS delivered a stabilized image with a precision of 0.04 arcsec (rms), whenever the coarse pointing was better than +/- 45 arcsec peak-to-peak. The automatic focus adjustment maintained a focus stability of 0.01 waves in the focal plane of the CWS. During the 5.5 day flight, good image quality and stability were achieved during 33 hours, containing 45 sequences, which lasted between 10 and 45 min.
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