NOAO Abstracts for SPIE Meeting in March
Deconvolving solar images using a Shack-Hartmann wavefront
sensor
Authors:
T. R. Rimmele
Abstract:
Deconvolution from wavefront sensing (DWFS) is a image reconstruction technique
that can be used as an alternative to phase diversity or speckle
reconstruction
techniques in particular for observations of extended objects.
Although, we are using DWFS for reconstructing solar images,
the main objective of this experiment was to use DWFS to validate the
correlating Shack Hartmann wavefront sensor approach for solar adaptive optics.
Several series of short exposure images and simultaneous wavefront sensor data,
which provides an estimate of the instantaneous wavefront, were collected
at the Vacuum Tower Telescope at Sacramento Peak.
We produced a series of reconstructions of solar structures, including
granulation, pores and sunspots.
We show that consistent results can be achieved using DWFS.
Reconstructed images of the same object but observed at slightly
different times,
i.e. different atmospheric realizations, are nearly identical.
[NOAO at the SPIE Meeting in
March]
National Optical Astronomy Observatories, 950 North Cherry Avenue,
P.O. Box 26732, Tucson, Arizona 85726 Phone: (520) 318-8000
Posted: 02Mar1998