<font face="Verdana, Arial, Helvetica" size="2">Lynn Matthews updated #14070<br />
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POSSM's POLPLOT<br />
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<div style="margin-left: 40px;">Ticket ID: 14070</div>
<div style="margin-left: 40px;">URL: <a href="https://help.nrao.edu/staff/index.php?/Tickets/Ticket/View/14070">https://help.nrao.edu/staff/index.php?/Tickets/Ticket/View/14070</a></div>
<div style="margin-left: 40px;">Name: Lynn Matthews</div>
<div style="margin-left: 40px;">Email address: <a href="mailto:lmatthew@haystack.mit.edu">lmatthew@haystack.mit.edu</a></div>
<div style="margin-left: 40px;">Creator: User</div>
<div style="margin-left: 40px;">Department: AIPS Data Reduction</div>
<div style="margin-left: 40px;">Staff (Owner): -- Unassigned --</div>
<div style="margin-left: 40px;">Type: Issue</div>
<div style="margin-left: 40px;">Status: Open</div>
<div style="margin-left: 40px;">Priority: Default</div>
<div style="margin-left: 40px;">SLA: NRAO E2E</div>
<div style="margin-left: 40px;">Template group: Default</div>
<div style="margin-left: 40px;">Created: 18 June 2019 05:32 PM</div>
<div style="margin-left: 40px;">Updated: 18 June 2019 05:32 PM</div>
<div style="margin-left: 40px;">Reply due: 20 June 2019 05:32 PM (2d 0h 0m)</div>
<div style="margin-left: 40px;">Resolution due: 13 March 2022 08:00 PM (999d 2h 28m)</div>
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I am attempting to use POSSM's 'POLPLOT' option, but it does not appear to be doing what I expect.<br /><br />I have a spectral line source with strong circular polarization. The first attachment shows RR overplotted with LL. <br /><br />But if I then set POLPLOT='RR/LL', the ratio appears to be a constant, modulo a few noise spikes that occur <br />in channels with no line emission (attachment 2). Indeed, the resulting plot is identical to the one I get if I specify POLPLOT='RR/RL'<br />(attachment 3).<br /><br />Thank you,<br />Lynn
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