<font face="Verdana, Arial, Helvetica" size="2">Eric Greisen updated #15373<br />
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<div style="margin-left: 40px;">Status: Open (was: Response Overdue)</div>
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AIPS APCAL opacity correction<br />
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<div style="margin-left: 40px;">Ticket ID: 15373</div>
<div style="margin-left: 40px;">URL: <a href="https://help.nrao.edu/staff/index.php?/Tickets/Ticket/View/15373">https://help.nrao.edu/staff/index.php?/Tickets/Ticket/View/15373</a></div>
<div style="margin-left: 40px;">Name: JongHo Park</div>
<div style="margin-left: 40px;">Email address: <a href="mailto:jhpark@astro.snu.ac.kr">jhpark@astro.snu.ac.kr</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): Eric Greisen</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: 29 December 2019 02:34 AM</div>
<div style="margin-left: 40px;">Updated: 06 January 2020 02:57 PM</div>
<div style="margin-left: 40px;">Resolution due: 29 September 2022 05:00 PM (997d 2h 2m)</div>
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<p>Actually, since the plot is for FD, I expect the TY table to be okay.</p>
<p>The Tant should all be magic blank ('INDE') with Tsys having valid</p>
<p>values that vary with spectral window. AOPCAL allows you to do</p>
<p>an IF at a time. Try running it one IF at a time to see if it produces</p>
<p>different Trx for each with similar opacity (although that should</p>
<p>increase with frequency). In principle, the Trx should be the same</p>
<p>but things in the back end could affect IFs differently.</p>
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<p>What frequency are your data?</p>
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<p>Eric Greisen</p>
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