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-729 DRP 2-D Pipeline <p>Recent bias exposures taken from SuNSS show lines that appear for all fibers. See for example <span class="image-wrap" style=""><a id="13351_thumb" href="https://pfspipe.ipmu.jp/jira/secure/attachment/13351/13351_Screen+Shot+2021-02-16+at+9.13.10+PM.png" title="Screen Shot 2021-02-16 at 9.13.10 PM.png" file-preview-type="image" file-preview-id="13351" file-preview-title="Screen Shot 2021-02-16 at 9.13.10 PM.png"><img src="https://pfspipe.ipmu.jp/jira/secure/thumbnail/13350/_thumb_13350.png" style="border: 0px solid black" /></a></span> </p> <p>This may be due to incorrect wiping of the CCDs, eg by not running the parallel clocks. The actual source of these lines may be work/room lamps being left on during data acquisition.</p> <p>Find the cause for the lines and fix.</p> PIPE2D-729

SuNSS biases show lines

Story Normal Won't Fix Won't Fix cloomis hassan SuNSS Wed, 17 Feb 2021 01:20:35 +0000 Thu, 4 Mar 2021 22:16:51 +0000 Thu, 4 Mar 2021 22:16:51 +0000 0 2 <p>Ummh, that's a 10s exposure, so it's not mysterious that there should be spectral features from Hg lamps in the dome.  The weird thing is the r-band biases such as 45775 which <em>also</em> show what look like lines, despite the fact that there should be no time when we're not running the parallels.</p> <p>Yes, indeed sorry - here is the visit=45775 r-band image : <span class="image-wrap" style=""><a id="13351_thumb" href="https://pfspipe.ipmu.jp/jira/secure/attachment/13351/13351_Screen+Shot+2021-02-16+at+9.13.10+PM.png" title="Screen Shot 2021-02-16 at 9.13.10 PM.png" file-preview-type="image" file-preview-id="13351" file-preview-title="Screen Shot 2021-02-16 at 9.13.10 PM.png"><img src="https://pfspipe.ipmu.jp/jira/secure/thumbnail/13351/_thumb_13351.png" style="border: 0px solid black" /></a></span> </p> <p>These are real Hg lines. There are c. 3s of "staring" time during the readout (cf. <a href="https://pfspipe.ipmu.jp/jira/browse/PIPE2D-743" title="Misc minor fixes to drp.stella.utils" class="issue-link" data-issue-key="PIPE2D-743"><del>PIPE2D-743</del></a>), and that's enough to pick up lines from the dome lights.</p> Development Rank 0|zzs47s: Reviewers hassan Sprint 2DDRP-2021 A 2 2DDRP-2021 A3 Story Points 2.0