This page (revision-5) was last changed on 07-Dec-2016 14:14 by PeterYoung

This page was created on 22-Apr-2008 11:21 by PeterYoung

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Version Date Modified Size Author Changes ... Change note
5 07-Dec-2016 14:14 1 KB PeterYoung to previous
4 02-May-2008 03:55 2 KB David R Williams to previous | to last
3 02-May-2008 03:52 2 KB David R Williams to previous | to last Comment by David R Williams
2 01-May-2008 14:30 1 KB PeterYoung to previous | to last
1 22-Apr-2008 11:21 1 KB PeterYoung to last

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At line 1 removed 2 lines
[{ALLOW edit EISMainUsers}]
[{ALLOW view Anonymous}]
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A word of caution, though. Some large rasters performed with the 40" slit have demonstrated that the fine motion mechanism seems to 'stick' at the ends of the range thus EIS is not actually accessing the extreme ends of the field of view. This occurs for all slits, not just the 40".
A word of caution, though. Some large rasters performed with the 40" slit have demonstrated that the fine motion mechanism seems to 'stick' at the ends of the range thus EIS is not actually accessing the extreme ends of the field of view. This effect is being investigated with the likely result being that the allowed range of the mechanism will be reduced by around 50".
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For designing EIS studies, users are requested to subtract 50" from the field of view values above to prevent this problem.
Peter Young
At line 21 added 6 lines
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It's probably worth clarifying that the although the "sticking" of the fine mirror rastering was discovered using the 40 arcsec slot, the mechanism is common to all observations, and thus affects all slit or slot choices.
--[David R Williams|~DavidRWilliams], 02-May-2008
This page (revision-5) was last changed on 07-Dec-2016 14:14 by PeterYoungTop