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-356 DRP 2-D Pipeline <p>Following a recent analysis of LAM dark frames, it has been determined that the light source is variable. </p> <p>We therefore need to model the time variability in the background from darks, using a representative set of LAM data.</p> <p>The accuracy for the model is to be determined.</p> PIPE2D-356

Model time-variability in background from darks

Task Normal Open Unresolved arnaud.lefur hassan Wed, 13 Feb 2019 16:18:07 +0000 Wed, 17 Mar 2021 20:20:13 +0000 0 3 <p>I just added one figure (FluxInReducedData.png) to illustrate the issue better, showing the structure and level of the background in the defocused data (exposure time = 297 sec). <a href="https://pfspipe.ipmu.jp/jira/secure/ViewProfile.jspa?name=hassan" class="user-hover" rel="hassan">hassan</a> recommended to add the figure "Background_with_time_split_with_sign.png" which shows that the mean background estimated via sigma clipping 1. is mainly a function of exposure time, 2. is different on two sides of defocus (W_ENFCAX is the header keyword used to described defocus).</p> <p>May already be addressed. <a href="https://pfspipe.ipmu.jp/jira/secure/ViewProfile.jspa?name=arnaud.lefur" class="user-hover" rel="arnaud.lefur">arnaud.lefur</a>?</p> <p>mmmh surprising.<br/> Is that scattered light from the room ? must be, that's 180 counts/hour, dark current should be around ~5-6 .</p> <p><a href="https://pfspipe.ipmu.jp/jira/secure/ViewProfile.jspa?name=ncaplar" class="user-hover" rel="ncaplar">ncaplar</a> any insight ?</p> <p>I dont know - this was maybe only case for some LAM data? Could we just verify that this is not the case with Subaru data now? If everything looks ok, this could be closed.</p> Development Rank 0|02qptg: Story Points 8.0