[PIPE2D-1092] Rotate H4 images Created: 15/Oct/22  Updated: 18/Oct/22  Resolved: 18/Oct/22

Status: Done
Project: DRP 2-D Pipeline
Component/s: obs_pfs
Affects Version/s: None
Fix Version/s: None

Type: Task Priority: Normal
Reporter: cloomis Assignee: rhl
Resolution: Done Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Reviewers: price

 Description   

The H4 detectors are physically rotated w.r.t. the CCDs: dispersion is along rows, with wavelength increasing from right to left.

Geometry files should probably rotate them to match the CCDs. Presumably ISR tasks work on non-rotated images? Does coping with that take effort?



 Comments   
Comment by rhl [ 15/Oct/22 ]

I can easily rotate the raw (post CDS) image.  We'd have to rebuild the defects, but I think that that's the only place that it would have fallout at this point.

Should I do this as part of PIPE2D-668?  I'd do it as a new ticket if we'd merged it, but I think it's still festering on a branch.

Comment by rhl [ 16/Oct/22 ]

Actually it's easy to do this at the end of the isr, so I did.  It looks as if we'll merge 668 today, so I'll push the changes tomorrow (2022-10-16)

Comment by rhl [ 16/Oct/22 ]

N.b. price that'll mean that the DetectorMap is probably rotated from Jim's models.  It's OK, we never use DetectorMaps on raw CCD data (because of the overscan etc.), so we still only need one map

Comment by rhl [ 17/Oct/22 ]

https://github.com/Subaru-PFS/obs_pfs/pull/131

Comment by rhl [ 18/Oct/22 ]

Merged to master

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