Tile detection: adopt MegaPipe (Gwyn) SExtractor parameters - #896
Open
cailmdaley wants to merge 3 commits into
Open
cailmdaley wants to merge 3 commits into
cailmdaley wants to merge 3 commits into
Conversation
Align default_tile.sex with the CADC megapipe.sex Stephen Gwyn uses for the UNIONS/CFIS tile catalogues, so our tile detection (data and image sims) matches the catalogue we are adopting: DETECT_THRESH/ANALYSIS_THRESH 1.0, DETECT_MINAREA 3, gauss_3.0_7x7 filter, DEBLEND_MINCONT 0.002, AUTO background with BACK_SIZE 512 / FILTERSIZE 9, LOCAL BACKPHOTO. With the previous parameters SExtractor triggered spuriously on about 10% of grid-placed Sersic galaxies in the sims. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
…R_NAME) Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Aligns
workflow/config/cfis/default_tile.sexwith themegapipe.sexStephen Gwyn uses for the CFIS tile catalogues (linked from the MegaPipe processing page), so our tile detection matches the catalogue we are adopting (#832). Data and image sims share this file.config_tile_Sx.inipoints at it, since the runner passes-FILTER_NAME)With the previous values SExtractor triggered spuriously on about 10% of grid-placed Sérsic galaxies in the image sims (Fabian); we expect that rate to drop on
grid_3with these, and data-run detection changes accordingly on the next campaign. Not a gate for this PR — see the rapid-iteration note added to CLAUDE.md.🤖 Generated with Claude Code