[INSTRM-578] Create WCS for science detectors Created: 11/Dec/18  Updated: 05/Nov/21  Resolved: 05/Nov/21

Status: Done
Project: Instrument control development
Component/s: ics_ccdActor, ics_hxActor, pfs_utils
Affects Version/s: None
Fix Version/s: None

Type: Task Priority: Normal
Reporter: cloomis Assignee: cloomis
Resolution: Done Votes: 0
Labels: EngRun, FITS, SPS
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Relates
relates to INSTRM-1022 Add Subaru-compliant spectroscopy cards Done
Story Points: 1
Sprint: PreEngRun4

 Description   

The FITS working group has decided that the science detectors should get a slit hole id vs lambda WCS. Rough wavelength solution is fine.

Not obvious which `pfsDetectorMap` to use.



 Comments   
Comment by cloomis [ 01/Jul/20 ]

Whatever routine implements this should return both the WCS cards and the 'DISPERSR', 'WAVELEN', 'WAV-MAX', and 'WAV-MIN' cards as specified in INSTRM-1022.

I will make a pfs_utils.getSpsWcs(module, arm) routine to return the INSTRM-1022 cards for now, based on the static optical design. If we eventually need to do a good job, the routine could pick up as-built and/or as-aligned optical configurations.

We still need information on how well we need to do for the WCS: is linear in lambda, fiberId good enough to put in now? Can/should someone (not me) make a better map?

Comment by cloomis [ 14/Oct/21 ]

Further discussion yielded the following agreement: we will add a simple linear WCS, mapping FITS pixel (1,1) to pixel (0,0). We will not attempt anything with wavelengths or fiber IDs.

Comment by cloomis [ 05/Nov/21 ]

ics_utils merged at 1717ece,  tagged 1.0.0
ics_ccdActor merged at f9b5e0a, tagged 1.7.1

 

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