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-674 DRP 2-D Pipeline <p>Jeg today requested, during ICS/SpS telecon that we take data to be used to study brighter-fatter effect. He asked that we take data wich with exposure times in steps of sqrt(2) from ``very faint'' to ``very bright''. One arcline is enough, probably Argon. We need quite a lot of data for ``very faint'' to get enough signal. </p> PIPE2D-674

Take data for characterizing brighter - fatter effect

Task Normal Done Done ncaplar ncaplar Wed, 9 Dec 2020 16:12:37 +0000 Tue, 23 Feb 2021 15:51:19 +0000 Mon, 22 Feb 2021 21:41:48 +0000 0 2 <p>From data acquisition POV, contrary to shutter exposure time, lamp exposure time are pure float.<br/> I could easily turn that into a list of floats if it makes your life easier ie:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>iic expose arc neon=1,2,3,4,5,10,20,60 </pre> </div></div> <p>What do you think ? It's up to you.</p> <p>1. I am a bit confused, you mention floats, but I see that the number in the command are integers?</p> <p>2. ``Problem'' is that we need to take many more exposures with 1 second, than with e.g., 60 seconds - I assume that the command you suggested does one exposure per each proposed time?</p> <p>Data acquisition started</p> <p> </p> <p>Sorry, I completely missed your answer.<br/> I mean a single float rather than a list of floats. <br/> Right, you could use the existing duplicate argument, but it would be constant and not function of exposure time.<br/> But we could have done something smarter, it's just python after all. </p> <p>We might need to that still. I am taking a first pass at the data, and after short analysis and discussion with JEG I am almost certain that further data will be needed (i.e., I often discover further nuances after the first attempt has been made).</p> <p>The dataset is argon and neon data, with visitIds from 40260 to 41339.</p> <p>I quickly created an example by stacking images with different exposure times. As we can see, the differences due to movement are dominant.</p> Relates SIM2D-20 Development Rank 0|02qpt6:508yl0chzzy0000p920zzzzzzz Sprint 2DDRP-2021 A 2DDRP-2021 A 2 Story Points 2.0