Roddier C, Roddier F
Appl Opt. 1993 Jun 1;32(16):2992-3008. doi: 10.1364/AO.32.002992.
Stellar images taken by the Hubble Space Telescope at various focus positions have been analyzed to estimate wave-front distortion. Rather than using a single algorithm, we found that better results were obtained by combining the advantages of various algorithms. For the planetary camera, the most accurate algorithms consistently gave a spherical aberration of -0.290-µm rms with a maximum deviation of 0.005 µm. Evidence was found that the spherical aberration is essentially produced by the primary mirror. The illumination in the telescope pupil plane was reconstructed and evidence was found for a slight camera misalignment.
对哈勃太空望远镜在不同聚焦位置拍摄的恒星图像进行了分析，以估计波前畸变。我们发现，通过结合各种算法的优点，而不是使用单一算法，可以获得更好的结果。对于行星相机，最精确的算法始终给出均方根为-0.290 µm的球差，最大偏差为0.005 µm。有证据表明，球差基本上是由主镜产生的。重建了望远镜光瞳平面中的照明，并发现了相机略有未对准的证据。
