Details
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Type:
Story
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Status: Invalid
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Resolution: Done
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Fix Version/s: None
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Component/s: meas_astrom
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Labels:
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Story Points:6
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Epic Link:
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Team:Alert Production
Description
Currently the catalog of reference objects in the matcher is not loaded on a area relative to the max shift/rotation allowed. For larger shifts/rotations/distortions this could lead to portions of the chip being outside of the loaded reference catalog area and thus unconstrained in future wcs fitting.
Deliverables: Fix to meas_astrom so that it loads an area of the reference catalog relative to the max shift/rotation.
Attachments
Activity
| Field | Original Value | New Value |
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I agree with Paul Price; the reference object loader already grows the region by some amount to help with this (as per Paul's suggestion). I don't think it's directly tied to the maximum shift distance though---I vaguely remember it being a fixed size in pixels? It might make more sense to just update that logic.
Colin Slater
added a comment - I agree with Paul Price ; the reference object loader already grows the region by some amount to help with this (as per Paul's suggestion). I don't think it's directly tied to the maximum shift distance though---I vaguely remember it being a fixed size in pixels? It might make more sense to just update that logic. Okay I'll change the title and description.
| Summary | Astrometry matcher needs to re-load refence objects after shift/rotation | Astrometry matcher needs to load reference objects relative to max shift/rotation |
| Description |
Currently the catalog of reference objects in the matcher is not reloaded after the wcs is corrected. For larger shifts/rotations/distortions this could lead to portions of the chip being outside of the loaded reference catalog area and thus unconstrained in future wcs fitting.
Deliverables: Fix to meas_astrom that reloads or adds to the reference catalog after the wcs is updated. |
Currently the catalog of reference objects in the matcher is not loaded on a area relative to the max shift/rotation allowed. For larger shifts/rotations/distortions this could lead to portions of the chip being outside of the loaded reference catalog area and thus unconstrained in future wcs fitting.
Deliverables: Fix to meas_astrom so that it loads an area of the reference catalog relative to the max shift/rotation. |
Found how to add a static padding to the bounding box used to load the reference catalog. Need to tie this padding amount to the maximum allowed shift in the matcher.
| Status | To Do [ 10001 ] | In Progress [ 3 ] |
The work of this ticket was completed inside of DM-9750.
| Resolution | Done [ 10000 ] | |
| Status | In Progress [ 3 ] | Invalid [ 11005 ] |
Instead of adding more I/O, we should load the catalog once only with an additional buffer in the search radius, where the buffer is equal to the maximum possible offset.