Table 4
RMS and Strehl ratio of the wavefront phase.
| Beam | M | Measured | In focus | |||||||
|
|
||||||||||
| σ λ obs | σ λ obs | R λ obs | σ 500 | R 500 | ||||||
| (waves) | (waves) | (waves) | ||||||||
|
|
||||||||||
| Blue | 36 | 0.059 | 0.059 | 0.87 | 0.047 | 0.92 | ||||
| Blue | 231 | 0.105 | 0.103 | 0.66 | 0.082 | 0.77 | ||||
| Red | 36 | 0.100 | 0.052 | 0.90 | 0.065 | 0.85 | ||||
| Red | 231 | 0.121 | 0.070 | 0.82 | 0.088 | 0.74 | ||||
Notes. σλobs is the RMS of the PD-estimated wavefront in waves at the observations wavelengths, given for the entire estimated wavefront phase, as well as after subtracting the best-fit Zernike focus component. Strehl ratio calculated as Rλ = exp { −(2πσλ)2 } . Subscript 500 denotes λ = 500 nm.
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