# Create a better set of simulated data for the deblender

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## Details

• Type: Story
• Status: Done
• Resolution: Done
• Fix Version/s: None
• Component/s:
• Labels:
None
• Templates:
• Story Points:
10
• Sprint:
DRP F17-3, DRP F17-4, DRP F17-5
• Team:
Data Release Production

## Description

Currently the deblender test data (located here) has 5 simulated images created with galsim. Blends are separated by running the stack's detection task on them, which estimates positions for the objects and groups them together.

Many of the "blends" detected are not actually blended objects, and many other objects are too faint to be detected by the pipeline (at least in the current catalogs). This makes it difficult to compare the deblender results with the simulated data, where there are a few big and dense blends and a larger number of "blends" whose objects aren't really blended together. The output created in this ticket will be images in all 6 LSST bands, the psf image, the variance in each band, the "truth" catalog, and a set of stack objects (calexps and merged catalogs) for use in the stack.

This is a change in scope from the original description of this ticket, which was just to make the current images more accessible to non-LSST Stack versions of the deblender (ie. the WFIRST deblender).

## People

• Assignee:
Fred Moolekamp
Reporter:
Fred Moolekamp
Reviewers:
Peter Melchior
Watchers:
Fred Moolekamp, Peter Melchior