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Feature #4539
closedCharge phase plate and check drift also at beam tilt focusing position
Status:
Closed
Priority:
Normal
Assignee:
Category:
-
Target version:
Start date:
10/20/2016
Due date:
% Done:
0%
Estimated time:
Deliverable:
Description
The charge position with beam tilt is away from recording charge position. This makes it has low contrast if a phase plate position is new. With this feature, focusing will not fail easily even at zero defocus.
Updated by Anchi Cheng over 7 years ago
- Tracker changed from Bug to Feature
- Subject changed from phase plate beam tilt focus fails easily on thicker ice to Charge phase plate also at beam tilt focusing position
- Description updated (diff)
There are two places can do this.
7445d13e change focuser to tilt the beam when melting. This guarantee the melting and focusing position is the same but may over charge the position over time since this is done on every target.
8753bb41 does the charging in PhasePlateAligner. This is probably the preferred method. The user has to make sure the tilt angle is consistent with that used in focusing, though.
Updated by Anchi Cheng over 7 years ago
- Subject changed from Charge phase plate also at beam tilt focusing position to Charge phase plate and check drift also at beam tilt focusing position
e2029c8 adds drift manager beam tilt.
Updated by Anchi Cheng about 7 years ago
- Related to Feature #4750: beam tilt focuser at an angle added
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