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A simply constructed extreme‐tilt holder for the Philips eucentric goniometer stage
Author(s) -
Chalcroft J. P.,
Davey C. L.
Publication year - 1984
Publication title -
journal of microscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.569
H-Index - 111
eISSN - 1365-2818
pISSN - 0022-2720
DOI - 10.1111/j.1365-2818.1984.tb00502.x
Subject(s) - tilt (camera) , goniometer , optics , materials science , astigmatism , physics , mechanical engineering , engineering
SUMMARY A simple single‐tilt holder has been constructed for the eucentric goniometer stage of the Philips EM 400. This holder is also compatible with the EM 300 series stages. The main improvements are as follows: unlimited tilt range using ‘25°’ polepiece configuration; secure gripping of all types of specimen grids by an easily operated micro‐clamp; elimination of shading effects by the holder at high tilt angles; and reduction of potential sources of astigmatism at high tilt angles.