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-731 Instrument control development <p>What does Subaru want for the H4RG ramp time cards? The PHDU can only know about the starting time stamp: should it only have <tt>MJD-STR</tt> cards (using <tt>MJD</tt> as the example one of <tt>MJD,HST,UT,LST</tt>)? Could also make the case for using straight <tt>MJD</tt> cards instead of <tt>MJD-STR</tt> cards.</p> <p>The per-read HDUs can obviously know about their start and end times; should they <em>each</em> have <tt>MJD-STR, MJD, MJD-END</tt> or is that silly and/or conflicting? Note that the times themselves would be boringly predictable: they will be <em>calculated</em> from the ramp start and the ramp time, and not by asking a clock for the time.</p> <p>Do we want <tt>-END</tt> cards for the entire ramp? Would that go into the last read's HDU, or would we add a post-ramp HDU for summary/"at-end" cards?</p> INSTRM-731

Decide on content of H4 ramp time cards.

Task Normal Done Done Hisanori Furusawa cloomis FITS SPS Thu, 15 Aug 2019 00:30:02 +0000 Wed, 24 Mar 2021 15:40:28 +0000 Wed, 24 Mar 2021 15:40:28 +0000 0 3 <p>What is the data format for the ramp data? Do they come into a multiple HDUs or separate FITS? MJD is a common but *-STR and *-END are optional, so in general, if the instrument team thinks them unnecessary, they simply put MJD (and the other common counterparts UT, LST, ...) only. If *-STR, *-END are helpful for something, it would be good to put them as well. Coexistence of all three keywords is no-silly and a typical case for the existing instruments. Which HDU they should go in? I'd like to hear @<a href="https://pfspipe.ipmu.jp/jira/secure/ViewProfile.jspa?name=monodera" class="user-hover" rel="monodera">monodera</a>'s comment from a FITS policy point-of-view, but I don't think that having these important keywords in every IMAGE HDU is a bad idea.</p> <p>For the PFSB ramp files, one HDU per read.</p> <p>If we know both start and end times we will have, for each of <tt>MJD, LST, HST, UT</tt>, a <tt>MJD-STR</tt>, <tt>MJD</tt>, <tt>MJD-END</tt> card. Easy.</p> <p>What card should there be if we only know the start time? If we use <tt>MJD</tt>, then the <em>meaning</em> of that card is "start of exposure" in some headers, and "middle of exposure" on others. So <tt>MJD-STR</tt>?</p> <p>Implemented as proposed.</p> Development Rank 0|zzs2xr:zzr Sprint SM1PD-2020 M SM1PD-2020 N SM1PD-2021 A SM1PD-2021 A 2 SM1PD-2021 A 3 SM1PD-2021 A 4 SM1PD-2021 A 5 Story Points 1.0