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<b> Ticket Information: </b>
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View this ticket online: <a href="https://help.nrao.edu/app#/t/ticket/41823" title="(#)" style="color: #0065A3; font-family: Helvetica, Arial, sans-serif; font-weight: normal; padding: 0; margin: 0; text-align: left; line-height: 1.3; text-decoration: underline;">https://help.nrao.edu/app#/tickets/t/41823</a>
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Andy Biggs <andrew.biggs@stfc.ac.uk> </td>
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Awaiting User
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Unsupported OS
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Hi Andy, Sorry for the long delay! It appears this ticket somehow got stuck in helpdesk purgatory. I’ve had a chat with some of the people here who have done much more high frequency VL...
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<!-- DP_MESSAGE_BEGIN --><div dir="ltr" lang="en" name="dp_message_191066_begin" class="dp_message_191066_begin"><div>Hi Andy,</div><div>Sorry for the long delay! It appears this ticket somehow got stuck in helpdesk purgatory.</div><div>I’ve had a chat with some of the people here who have done much more high frequency VLBA work than me, and the consensus is that you do not need to do the opacity correction if you do not care about the amplitude calibration being as good as possible.</div><div>As for where those negative opacity numbers are coming from, the guess is that there is something wrong in the weather (WX) tables for those stations. </div><div>I hope that helps.</div><div>Justin Linford</div></div><!-- DP_MESSAGE_END -->
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