Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991spie.1542..186r&link_type=abstract
In: Active and adaptive optical systems; Proceedings of the Meeting, San Diego, CA, July 22-24, 1991 (A93-39451 15-74), p. 186-1
Astronomy and Astrophysics
Astronomy
16
Image Motion Compensation, Solar Instruments, Telescopes, Tracking (Position), Seeing (Astronomy), Solar Observatories
Scientific paper
We present a tracking system that stabilizes atmospheric and instrumental image motion in vacuum tower telescopes. The system is designed to lock on low contrast features, such as solar granulation or other small scale structure. A matrix diode array rapidly scans the scene of interest, usually with a field of 5 arcsec. Images are cross-correlated in real time with a previously recorded reference image of the same area. The drive signal for the image motion corrector, a small, articulated mirror, is generated by measuring the position of the cross correlation maximum. Reference pictures are updated every 30 s in order to adapt to the changing small scale solar features. Performance tests show that the residual image motion in the tracked image is 0.05 arcsec rms compared to a typical 0.5 arcsec rms for the untracked image. The system locks on any small scale structure anywhere on the sun. The bandwidth of the servo system is 40 Hz, or sufficient to stabilize image motion on a meter-class solar telescope.
Dunn Richard B.
Rimmele Th.
Spence George
von der Luehe Oskar
Wiborg Philip H.
No associations
LandOfFree
Solar feature correlation tracker does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Solar feature correlation tracker, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solar feature correlation tracker will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1268619