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-529 DRP 2-D Pipeline <p>Before we start with full data acquisition on the Subaru data system, we need to be able to find baseline values for the optimal exposure time in order to get the best signal to noise for large amounts of spots without saturating the detector. This is basically the rehash of <a href="https://pfspipe.ipmu.jp/jira/browse/PIPE2D-324" title="Estimate the exposure times for the defocused data experiment" class="issue-link" data-issue-key="PIPE2D-324"><del>PIPE2D-324</del></a> for the ``new'' system at Subaru.</p> <p>The notebook code is at <a href="https://github.com/Subaru-PFS/dev_2ddrp/blob/master/2d_PSF_code/Code_Repository/Other_Notebooks/Flux_Calculation_For_LAM_January_2019.ipynb." class="external-link" rel="nofollow">https://github.com/Subaru-PFS/dev_2ddrp/blob/master/2d_PSF_code/Code_Repository/Other_Notebooks/Flux_Calculation_For_LAM_January_2019.ipynb.</a> </p> <p> </p> PIPE2D-529

Estimate the exposure times for the defocused data experiment with SM1 on Subaru

Task Normal Done Done ncaplar ncaplar Wed, 25 Mar 2020 20:46:03 +0000 Mon, 4 Jan 2021 20:22:51 +0000 Wed, 22 Apr 2020 16:10:50 +0000 0 1 <p>I will start this ticket after ending <a href="https://pfspipe.ipmu.jp/jira/browse/PIPE2D-547" title="Investigate and solve the problem of negative values in LSF" class="issue-link" data-issue-key="PIPE2D-547"><del>PIPE2D-547</del></a> (hopefully mid next week (the week which is starting on April 13))</p> <p>Cliffnotes - The system at Subaru, in its current form:</p> <p>1. For HgAr, flux is 0.5 of the flux that we have used at LAM, where attenuator was set at a value of 195. This means that to get equivalent exposure all times need to be extended by a factor of 2.<br/> 2. For Neon, flux is around 7.5 times higher than what we have used at LAM, where attenuator was set at a value of 243. This means that to get equivalent exposure all times need to be reduced by a factor of 7.5. Of course, that opens the old problem of the finite time for the transfer of the shutter, described in <a href="https://pfspipe.ipmu.jp/jira/browse/PIPE2D-422" title="Check our intuition about the illumination of the fibers at LAM" class="issue-link" data-issue-key="PIPE2D-422"><del>PIPE2D-422</del></a>.</p> Blocks INSTRM-933 INSTRM-946 Relates PIPE2D-324 Development Rank 0|02qprz:i Sprint 2DDRP-2021 A Story Points 4.0