Correction of misalignment dependent aberrations of the Hubble Space Telescope via phase retrieval

Details Correction of misalignment dependent aberrations of the Hubble Space Telescope via phase retrieval Correction of misalignment dependent aberrations of the Hubble Space Telescope via phase retrieval

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989spie.1168..201g&link_type=abstract

IN: Current developments in optical engineering and commercial optics; Proceedings of the Meeting, San Diego, CA, Aug. 7-11, 198

Physics

Optics

Aberration, Faint Object Camera, Hubble Space Telescope, Misalignment, Optical Correction Procedure, Point Spread Functions, Optical Properties, Pixels, Pupil Size, Spaceborne Telescopes

Scientific paper

A backup scheme for correcting misalignment-dependent aberrations of the HST is described which uses a phase retrieval algorithm to compute secondary mirror misalignments from measured point spread function (PSF) data at two different field locations. The PSF data are obtained from the Faint Object Camera and the Wide Field Planetary Camera. Comparison pupil functions are written in terms of annular Zernike Polynomial. At the two field locations of the instruments, artificial PSFs are generated from FFTs of the respective pupil functions, and the mean square differences between the actual PSFs and constructed PSFs are mimimized with respect to the Zernike Polynomial coefficients. Thus, two sets of coefficients are obtained, one for each of the field positions. Statistical regression analysis is then used to determine the misalignments as a function of the aberration coefficients.

Affiliated with

Also associated with

No associations

Rating

Correction of misalignment dependent aberrations of the Hubble Space Telescope via phase retrieval 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 Correction of misalignment dependent aberrations of the Hubble Space Telescope via phase retrieval, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Correction of misalignment dependent aberrations of the Hubble Space Telescope via phase retrieval will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1415266