Details
-
Type:
Improvement
-
Status: Done
-
Resolution: Done
-
Fix Version/s: None
-
Component/s: ts_aos
-
Labels:
-
Story Points:3
-
Team:Telescope and Site
Description
Evaluate the impact of imageCoCenter with auxTel data . Consider whether this part has been implemented correctly, given that field of view is a kwarg in `imageCoCenter` https://github.com/lsst-ts/ts_wep/blob/28ba52920896b412b6cdff6465af135c33860905/python/lsst/ts/wep/cwfs/CompensableImage.py#L273 , and it is not set when calling `imageCoCenter` in `Algorithm` https://github.com/lsst-ts/ts_wep/blob/28ba52920896b412b6cdff6465af135c33860905/python/lsst/ts/wep/cwfs/Algorithm.py#L702 (thus it is always 3.5 deg).
Attachments
Issue Links
Activity
Performed the analysis similar to https://jira.lsstcorp.org/browse/DM-36714 - the results support removal of `imageCoCenter`
Given the results of analysis in this notebook https://github.com/suberlak/AOS/blob/main/AOS_DM-36840_cocenter_auxTel_data.ipynb `imageCoCenter` step has no impact on running the CWFS code on `auxTel` images. Although the FOV is incorrect (`Algorithm` assumes the 3.5 degrees regardless of instrument) , the small field distance (up to 6.7/2 arcmin for auxTel) means that the calculated shift is very small (less than 3.5 px for maximally distant donut):
We find that the amount of `radialShift` has to be increased beyond 5.5 px to make any difference:
To impart this amount of radialShift, `auxTel` donuts would have to be outside of the field of view. Thus `imageCoCenter` can be safely removed when it comes to analysis of `auxTel` images.