[INSTRM-1414] Update blackspot geometry Created: 22/Oct/21  Updated: 02/Sep/22  Resolved: 01/Jul/22

Status: Done
Project: Instrument control development
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Task Priority: Normal
Reporter: hassan Assignee: chyan
Resolution: Done Votes: 0
Labels: EngRun
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Blocks
is blocked by INSTRM-1385 Make MCS readouts more efficient: pip... Done
is blocked by INSTRM-1397 Fast SpS reads for cobra moves behind... Done
is blocked by PIPE2D-914 Add support for SpS fast-mode exposur... Done
Relates
relates to INSTRM-1503 Testing dot-crossing algorithm on PFI... Done
relates to INSTRM-1447 Develop analyser to measure the dot s... Won't Fix
Sprint: preEngRun07Sep

 Description   

As discussed during the commissioning telecon 2021-10-20: the blackspot geometry is currently not fully understood. Please provide the updated geometry.

The most direct method to determine the blackspot geometry, proposed by Craig Loomis, is to 'scan' each blackspot using the related cobra, and monitor the flux variation using the SpS to determine the blackspot boundaries. Two chords across a single blackspot may be sufficient.

 Comments   
Comment by chyan [ 11/Feb/22 ]

This is related to the dot-crossing testing. ncaplar Do you have and update?

Comment by hassan [ 25/Feb/22 ]

ncaplar has provided these data to ASIAA by email 2022-02-24.

We need to agree where to store these data.

The data also need to be verified separately.

yuki.moritani will address both points above.

Comment by yuki.moritani [ 25/Feb/22 ]

Neven provided the data in pickle on pfsa-user01:

/work/ncaplar/BlackDotsData/dots_new_Nov
/work/ncaplar/BlackDotsData/dots_new_Jan
/work/ncaplar/BlackDotsData/dots_new_Feb

He also reported position difference in commissioning telecon (Slide)
Each data has 2394 positions. I think the final position and its uncertainty should be obtained after optimizing the algorithm (INSTRM-1530)
In regard to the place to store the do position, I filed a ticket (INSTRM-1535).

Comment by hassan [ 11/Mar/22 ]

Need to verify this with the PFI on POPT2 during daytime, so after May 13.

Comment by hassan [ 10/Jun/22 ]

Still plan to do this on the telescope during the June 2022 Eng Run.

Comment by chyan [ 19/Jun/22 ]

This file is updated with the Butler class. 

butler = Butler(configRoot=os.path.join(os.environ["PFS_INSTDATA_DIR"], "data"))
dotDF = butler.get('black_dots')
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