Free Access

Fig. 4


Optical design of the OHP prototype metrology simulated with the Zemax software. On the left, a scale schematic view similar to that shown in Fig. 3 illustrates the plane including the 9   m baseline and the C point. In the middle, a zoom of the field mirror is shown: the ray tracing is for a 1   mm offcenter metrology mirror (horizontal displacement). On the right, the two images give the results of simulations performed, respectively, without and with piston errors (on the N mirror). In the two cases, the fringes of the three baselines at OHP (5   m, 9   m, 10.5   m) are shown.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.