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An Optical Ultrahigh‐Resolution Cross‐dispersed Echelle Spectrograph with Adaptive Optics

✍ Scribed by Ge, Jian; Angel, J. R. P.; Jacobsen, B.; Woolf, N.; Fugate, R. Q.; Black, J. H.; Lloyd‐Hart, M.

Book ID: 123914125
Publisher: University of Chicago Press
Year: 2002
Tongue: English
Weight: 369 KB
Volume: 114
Category: Article
ISSN: 0004-6280
DOI: 10.1086/341711

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Figure 7 Plots of the transmission ratio T versus the half-branching angle A for the AGI structure with different values of refractive index n of the PFA 3 and the AGI structures are 7.8 and 9.3Њ, respectively. The improvement in the angle is thus 1.5Њ. For still lower n , 3 further improvement woul