Bug #1038
closedFirst drift check from image-shift target is always larger than later ones
0%
Set drift rate threshold larger, knowing the later ones are real
Description
This is a long standing problem and is more obvious on some scope than others. This causes drift monitor to go in and out forever.
Updated by Anchi Cheng over 13 years ago
- Status changed from Assigned to In Code Review
- Assignee changed from Anchi Cheng to Jim Pulokas
r15024 seems to make this effect smaller by all the extra pause time added before the first image is taken and making sure that the pause is used all the time.
By setting pause time longer such as 5 sec, it seems to be better.
Updated by Anchi Cheng over 11 years ago
r17334 added an image acquisition without using it for correlation so that the shutter is activated once. It seems to remove enough hysteresis to eliminate the problem.
A cause is also added to prevent singular low drift to exit the monitor loop when the drift rate jumps around. Example of the drift rate sequence that could exit in the old method is (...,3.0,0.8,0.2,1.4) If the threshold is 1.0, then the last two average will be 1.3 and 0.8.
Updated by Anchi Cheng about 8 years ago
- Related to Feature #3990: Not to repeat drift monitoring after drift has settled added
Updated by Sargis Dallakyan over 6 years ago
- Status changed from In Code Review to Closed