<!DOCTYPE html>
<html style="background-color: #FEFEFE;"><body style="min-width: 100%; -webkit-text-size-adjust: 100%; -ms-text-size-adjust: 100%; margin: 0; padding: 0 20px; -moz-box-sizing: border-box; -webkit-box-sizing: border-box; box-sizing: border-box; color: #242424; font-family: Calibri, Helvetica, Arial, sans-serif; font-weight: normal; text-align: left; line-height: 125%; font-size: 14px; background-color: #FEFEFE; width: 100%;">
<p style="margin: 0; color: #242424; font-family: Calibri, Helvetica, Arial, sans-serif; font-weight: normal; padding: 0; text-align: left; line-height: 125%; font-size: 14px; margin-bottom: 10px;">Joseph Michail <joemichail2024@u.northwestern.edu> created a ticket
<br><br><b> Ticket Information: </b>
<br><br></p>
<table class="dp-props-table" border="0" cellspacing="0" cellpadding="0" style="border-spacing: 0; border-collapse: collapse; padding: 0; vertical-align: top; text-align: left; border-left: 1px solid #BABABA; border-right: 1px solid #BABABA; border-bottom: 1px solid #BABABA;">
<tr style="padding: 0; vertical-align: top; text-align: left;">
<td class="dp-td-heading" colspan="2" style="word-wrap: break-word; -webkit-hyphens: auto; -moz-hyphens: auto; hyphens: auto; padding: 6px; vertical-align: top; text-align: left; color: #242424; font-family: Calibri, Helvetica, Arial, sans-serif; font-weight: normal; margin: 0; line-height: 125%; font-size: 14px; border-top: 1px solid #BABABA; border-collapse: collapse;">
View this ticket online: <a href="https://help.nrao.edu/agent/#app.tickets,t:36520" 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/agent/#app.tickets,t:36520</a>
</td>
</tr>
<tr style="padding: 0; vertical-align: top; text-align: left;">
<td class="dp-td-heading" style="word-wrap: break-word; -webkit-hyphens: auto; -moz-hyphens: auto; hyphens: auto; padding: 6px; vertical-align: top; text-align: left; color: #242424; font-family: Calibri, Helvetica, Arial, sans-serif; font-weight: normal; margin: 0; line-height: 125%; font-size: 14px; border-top: 1px solid #BABABA; border-collapse: collapse;">ID</td>
<td style="word-wrap: break-word; -webkit-hyphens: auto; -moz-hyphens: auto; hyphens: auto; padding: 6px; vertical-align: top; text-align: left; color: #242424; font-family: Calibri, Helvetica, Arial, sans-serif; font-weight: normal; margin: 0; line-height: 125%; font-size: 14px; border-top: 1px solid #BABABA; border-collapse: collapse;">36520</td>
</tr>
<tr style="padding: 0; vertical-align: top; text-align: left;">
<td class="dp-td-heading" style="word-wrap: break-word; -webkit-hyphens: auto; -moz-hyphens: auto; hyphens: auto; padding: 6px; vertical-align: top; text-align: left; color: #242424; font-family: Calibri, Helvetica, Arial, sans-serif; font-weight: normal; margin: 0; line-height: 125%; font-size: 14px; border-top: 1px solid #BABABA; border-collapse: collapse;">Ticket Starter</td>
<td style="word-wrap: break-word; -webkit-hyphens: auto; -moz-hyphens: auto; hyphens: auto; padding: 6px; vertical-align: top; text-align: left; color: #242424; font-family: Calibri, Helvetica, Arial, sans-serif; font-weight: normal; margin: 0; line-height: 125%; font-size: 14px; border-top: 1px solid #BABABA; border-collapse: collapse;">
Joseph Michail <joemichail2024@u.northwestern.edu> </td>
</tr>
<tr style="padding: 0; vertical-align: top; text-align: left;">
<td class="dp-td-heading" style="word-wrap: break-word; -webkit-hyphens: auto; -moz-hyphens: auto; hyphens: auto; padding: 6px; vertical-align: top; text-align: left; color: #242424; font-family: Calibri, Helvetica, Arial, sans-serif; font-weight: normal; margin: 0; line-height: 125%; font-size: 14px; border-top: 1px solid #BABABA; border-collapse: collapse;">Status</td>
<td style="word-wrap: break-word; -webkit-hyphens: auto; -moz-hyphens: auto; hyphens: auto; padding: 6px; vertical-align: top; text-align: left; color: #242424; font-family: Calibri, Helvetica, Arial, sans-serif; font-weight: normal; margin: 0; line-height: 125%; font-size: 14px; border-top: 1px solid #BABABA; border-collapse: collapse;">
Awaiting Agent
</td>
</tr>
<tr style="padding: 0; vertical-align: top; text-align: left;">
<td class="dp-td-heading" style="word-wrap: break-word; -webkit-hyphens: auto; -moz-hyphens: auto; hyphens: auto; padding: 6px; vertical-align: top; text-align: left; color: #242424; font-family: Calibri, Helvetica, Arial, sans-serif; font-weight: normal; margin: 0; line-height: 125%; font-size: 14px; border-top: 1px solid #BABABA; border-collapse: collapse;">Agent</td>
<td style="word-wrap: break-word; -webkit-hyphens: auto; -moz-hyphens: auto; hyphens: auto; padding: 6px; vertical-align: top; text-align: left; color: #242424; font-family: Calibri, Helvetica, Arial, sans-serif; font-weight: normal; margin: 0; line-height: 125%; font-size: 14px; border-top: 1px solid #BABABA; border-collapse: collapse;">Unassigned</td>
</tr>
<tr style="padding: 0; vertical-align: top; text-align: left;">
<td class="dp-td-heading" style="word-wrap: break-word; -webkit-hyphens: auto; -moz-hyphens: auto; hyphens: auto; padding: 6px; vertical-align: top; text-align: left; color: #242424; font-family: Calibri, Helvetica, Arial, sans-serif; font-weight: normal; margin: 0; line-height: 125%; font-size: 14px; border-top: 1px solid #BABABA; border-collapse: collapse;">Department</td>
<td style="word-wrap: break-word; -webkit-hyphens: auto; -moz-hyphens: auto; hyphens: auto; padding: 6px; vertical-align: top; text-align: left; color: #242424; font-family: Calibri, Helvetica, Arial, sans-serif; font-weight: normal; margin: 0; line-height: 125%; font-size: 14px; border-top: 1px solid #BABABA; border-collapse: collapse;">AIPS Data Reduction</td>
</tr>
<tr style="padding: 0; vertical-align: top; text-align: left;">
<td class="dp-th-heading" style="word-wrap: break-word; -webkit-hyphens: auto; -moz-hyphens: auto; hyphens: auto; padding: 6px; vertical-align: top; text-align: left; color: #242424; font-family: Calibri, Helvetica, Arial, sans-serif; font-weight: normal; margin: 0; line-height: 125%; font-size: 14px; border-top: 1px solid #BABABA; border-collapse: collapse;">Operating System</td>
<td style="word-wrap: break-word; -webkit-hyphens: auto; -moz-hyphens: auto; hyphens: auto; padding: 6px; vertical-align: top; text-align: left; color: #242424; font-family: Calibri, Helvetica, Arial, sans-serif; font-weight: normal; margin: 0; line-height: 125%; font-size: 14px; border-top: 1px solid #BABABA; border-collapse: collapse;">
<div class="custom_def_ticket_2 Choice customfield rendered dont-break-out" id="2_rendered_wrap" style="font-family: Calibri, Helvetica, Arial, sans-serif; line-height: 125%; color: #242424; font-size: 14px;">
Unsupported OS
</div>
</td>
</tr>
</table>
<br><br><meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<!-- Please avoid to edit this template as it may break some functionalities --><!--DP_PREVIEW_TEXT_BEGIN--><div id="DP_PREVIEW_TEXT_MARK" class="DP_PREVIEW_TEXT_MARK" style="font-family: Calibri, Helvetica, Arial, sans-serif; line-height: 1; color: #fefefe; font-size: 1px; display: none; max-height: 0; max-width: 0; opacity: 0; overflow: hidden;">
Hi, I'm taking a shot in the dark here because I'm not sure if this is an AIPS or a Difmap issue. I just calibrated my first VLBA dataset in AIPS and would like to do imaging and self-c...
</div>
<!--DP_PREVIEW_TEXT_END-->
<div class="dp-wrap" style="font-family: Calibri, Helvetica, Arial, sans-serif; line-height: 125%; color: #242424; font-size: 14px;">
<a class="DP_TOP_MARK dp_marker_link" id="DP_TOP_MARK" name="DP_TOP_MARK" style="color: #000; font-family: Helvetica, Arial, sans-serif; font-weight: normal; padding: 0; margin: 0; text-align: left; line-height: 1px; text-decoration: none; height: 1px; overflow: hidden; cursor: default; display: inline;"> </a>
<!-- DP_MESSAGE_BEGIN -->
<div dir="ltr" lang="en" name="dp_message_167715_begin"
class="dp_message_167715_begin">
<div>Hi,</div><div><br></div><div>I'm taking a shot in the dark here because I'm not sure if this is an AIPS or a Difmap issue. </div><div><br></div><div>I just calibrated my first VLBA dataset in AIPS and would like to do imaging and self-calibration in Difmap. However, I'm having an issue importing the FITS files (from FITTP) into Difmap. Each source file I put into Difmap says there are no uv points within the selected range; this occurs even if I turn off uv ranges. The FITS files contain visibilities (as it shows a non-zero number while loading into Difmap), but it acts like everything is flagged.</div><div><br></div><div>I've tried a few things to narrow down the cause. First, I checked Redhat 8 on AOC to make sure it was not my system's installation of Difmap (I'm running Ubuntu 22 on WSL). The same thing happens there. Next, I checked if the files were corrupted by importing the files into AIPS and CASA; no issues either way. I double-checked that the flags weren't being erroneously changed in AIPS during SPLIT and FITTP by running UVPLT on each of the original and re-loaded calibrated FITS files. There were no problems with the flagging. </div><div><br></div><div>I found a difference between calibrated and uncalibrated data, though. My calibrated data did not load properly, but the original uncalibrated data loaded into Difmap without issues. To double-check, I successfully loaded an uncalibrated dataset from a different project into Difmap.</div><div><br></div><div>I'm at a loss. It seems like the issue comes from my calibration strategy in AIPS. I followed the AIPS tutorial on the CASA Guide webpage for self-calibration (but used my data: BM535 Q-band). I didn't skip any steps, and the data look good in AIPS, so the calibrations were successfully applied. Do you have any sense of what might have gone wrong and how to fix it? I couldn't find anything about this online.</div><div><br></div><div>Best,</div><div>Joe</div>
</div>
<!-- DP_MESSAGE_END -->
<a name="dp_message_167715_end" class="dp_message_167715_end dp_marker_link" style="color: #000; font-family: Helvetica, Arial, sans-serif; font-weight: normal; padding: 0; margin: 0; text-align: left; line-height: 1px; text-decoration: none; height: 1px; overflow: hidden; cursor: default; display: inline;"></a>
<br><br>
</div>
<style type="text/css">@media only screen {
html {
min-height: 100%;
background: #f3f3f3;
}
}</style>
</body></html>