Automatic solar image motion measurements

Details Automatic solar image motion measurements Automatic solar image motion measurements

Apr 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975soph...41..487c&link_type=abstract

Solar Physics, vol. 41, Apr. 1975, p. 487-498.

Physics

1

Image Motion Compensation, Signal Measurement, Solar Flux, Solar Observatories, Automatic Test Equipment, Image Velocity Sensors, Optical Paths

Scientific paper

The solar seeing image motion has been monitored electronically and absolutely with a 25 cm telescope at three sites along the ridge at the southern end of the Magdalena Mountains west of Socorro, New Mexico. The uncorrelated component of the variations of the optical flux from two points at opposite limbs of the solar disk was continually monitored in 3 frequencies centered at 0.3, 3 and 30 Hz. The frequency band of maximum signal centered at 3 Hz showed the average absolute value of image motion to be somewhat less than 2sec. The observer estimates of combined blurring and image motion were well correlated with electronically measured image motion, but the observer estimates gave a factor 2 larger value.

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