https://pfspipe.ipmu.jp/jira This file is an XML representation of an issue en-us 8.3.4 803005 13-09-2019 https://pfspipe.ipmu.jp/jira/browse/PIPE2D-874 DRP 2-D Pipeline <p>I have realized that the code, as I implemented it in <a href="https://pfspipe.ipmu.jp/jira/browse/PIPE2D-777" title="Difference in centering between pipeline and 2d algorithm - centering and normalization" class="issue-link" data-issue-key="PIPE2D-777"><del>PIPE2D-777</del></a> and <a href="https://pfspipe.ipmu.jp/jira/browse/PIPE2D-778" title="Difference between pipeline and 2d algorithm - interpolation/downsampling" class="issue-link" data-issue-key="PIPE2D-778"><del>PIPE2D-778</del></a> is wrong. What the code was doing was not summing over the pixel when doing the final downsampling, but just outputing the central value. This was due to me simply copy-pasting the galsim snippet code which correctly applies the offset (interpolating on subpixel values with Lancoz5) and not realizing the difference in this final step. This difference became obvious when using the code provided by Paul in PIPE-872. I have now implemented the proper dowsampling, which is the same as in PIPE-872.</p> <p>I have to rerun the solutions being prepared for <a href="https://pfspipe.ipmu.jp/jira/browse/PIPE2D-857" title="Apply sky subtraction, deduced from DCB to SuNNS data, for limited number of fibers" class="issue-link" data-issue-key="PIPE2D-857"><del>PIPE2D-857</del></a>, due to this change (see the Figure). Given that the effect on defocused images and Zernike parameters is minimal, I will run shorter runs as we have to significantly modify only few parameters determining the size in focus.</p> PIPE2D-874

Centering/offset/interpolation - fix to PIPE2D 778 and PIPE2D-777

Task Normal Done Done ncaplar ncaplar Wed, 28 Jul 2021 14:35:41 +0000 Thu, 5 Aug 2021 14:45:42 +0000 Thu, 5 Aug 2021 14:45:42 +0000 0 1 <p>The change was applied (internal version 0.47f), solution have been run (internal name - Aug01 solution) and applied to DCB and SuNNS data. There are no obvious large downsampling and centering issues. Some related problems have been noticed - I will close this ticket now and open tickets with those problems.</p> Blocks PIPE2D-857 Relates PIPE2D-777 PIPE2D-778 PIPE2D-872 Development Rank 0|zzs47y:zzzzzzz6 Sprint 2DDRP-2021 A 7 2DDRP-2021 A 8 Story Points 4.0