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/INSTRM-37 Instrument control development <p>We have a proposed mechanism for establishing the exposure time and duration values, but need to make all the actors agree.</p> <ul> <li>the ENU actors (specifically the shutter control) establish the absolute exposure start time (based on some point in the shutter opening process) and the exposure length (based on the shutter closing and the previously decided open time).</li> <li>the CCD actor read command will be passed those as "exptime=S.SS" and "dateobs=string".</li> </ul> <p>ISO format, UTC. </p> <p>Questions:</p> <ul> <li>What FITS keys to generate?</li> <li>what to do about bias and dark readouts? I think that the dateobs argument should be optional and the exptime argument disallowed or ignored.</li> <li></li> </ul> INSTRM-37

Finalize exposure time sources and keywords

Task Major Done Done arnaud.lefur cloomis Fri, 16 Dec 2016 17:33:44 +0000 Wed, 5 Apr 2017 09:19:50 +0000 Mon, 9 Jan 2017 09:57:06 +0000 0 2 <p>Is this for AIT work or the final? If final, we also need to have a place for NCU actor...</p> <p>For FITS keyword, limiting only to datetime ones,</p> <ul> <li>EXPTIME for exposure time</li> <li>HST, HST-STR, HST-END, LST, LST-STR, LST-END for local time</li> <li>MJD, MJD-STR, MJD-END for MJD</li> <li>UT, UT-STR, UT-END for UT</li> </ul> <p>For dark or bias, normally</p> <ul> <li>set DATA-TYP as 'BIAS' or 'DARK'</li> <li>set EXPTIME as 0 or exposure time of dark</li> </ul> <ol> <li>check <a href="https://pfs.ipmu.jp/pipermail/instrument-software/attachments/20161011/3cee2e9c/attachment.xlsx" class="external-link" rel="nofollow">https://pfs.ipmu.jp/pipermail/instrument-software/attachments/20161011/3cee2e9c/attachment.xlsx</a> for extended list.</li> </ol> <p>The keywords dateobs and exptime are now generated by the bsh controller.<br/> This event occurs after :</p> <ol> <li>Interlock checking and transition validation</li> <li>"shut_open" NTR</li> <li>"shut_close" NTR</li> </ol> <p>See commit <a href="https://github.com/Subaru-PFS/ics_enuActor/commit/b8cb5b9dd39b17ffa00baaffb9eb03d5e4e840bb" class="external-link" rel="nofollow">b8cb5b9</a></p> <p>That scheme works for me. But please reassure me that those keywords are <em>always</em> generated before the CCD readout is called for.</p> <p>Yes, they must have been generated before. <br/> It's the sequencer job to get and check those information and then parse them as a argument to the ccdActor read command.</p> <p>I've added <br/> exptime = cmdKeys<span class="error">&#91;&#39;exptime&#39;&#93;</span>.values<span class="error">&#91;0&#93;</span> if 'exptime' in cmdKeys else None<br/> in the 2016-11-30 version to be able to have exptime in FITS header</p> Development Rank 0|ii019r: Reviewers cloomis