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Update on McMath-Pierce Solar-Stellar Cross-disperser Installation (1Jun95)
(from NSO, NOAO Newsletter No. 42, June 1995)

Because the mechanical system has been extensively redesigned, leading to
changes in the relative positions of some of the optical components,
characteristics such as pixel sampling have changed in the spectrograph
system. In collaboration with an REU student, Enrique Chavez, we are
working through all the possible configurations of the spectrograph. We will
then produce a document showing the results of the re-characterization of the
system. In addition, we have identified a problem with the original system
field lens that resulted in the formation of the telescope pupil at an incorrect
location (leading to vignetting of the spectral field in the new configuration).
We are correcting this problem by having the lens modified. The modified lens
should be in place by the time of this report.

Mark Giampapa, Dave Jaksha

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