<div dir="ltr">Dear Semantics,<div><br></div><div>I have been asked by NASA colleagues if there is an existing taxonomy of Missions, facilities and instruments in use in Astrophysics.  This of course brought back fond memories of discussions I&#39;ve had with some of you over the past decade, but I&#39;m afraid I haven&#39;t followed any of the recent conversations on the topic.</div><div><br></div><div>So I found my way to the following IVOA pages:</div><div><a href="https://wiki.ivoa.net/twiki/bin/view/IVOA/UniFacil">https://wiki.ivoa.net/twiki/bin/view/IVOA/UniFacil</a></div><div><a href="https://wiki.ivoa.net/twiki/bin/view/IVOA/MetaTelInst">https://wiki.ivoa.net/twiki/bin/view/IVOA/MetaTelInst</a><br></div><div><br></div><div>From what I can gather, some progress has been made but there is still no official list that this WG has endorsed or is even considering at this point.  Is this correct?  And if so, are there any &quot;work in progress&quot; lists that are available for inspection?</div><div><br></div><div>Thanks,</div><div>Alberto<br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div></div><div><span><div dir="ltr" style="margin-left:0pt"><span><div dir="ltr" style="margin-left:0pt"><table style="border:none;border-collapse:collapse"><colgroup><col width="445"><col width="275"></colgroup><tbody><tr style="height:90pt"><td style="border-width:1pt;border-style:solid;border-color:rgb(255,255,255);vertical-align:top;padding:5pt"><p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt"><font color="#000000" face="Arial"><span style="font-size:12.6667px;white-space:pre-wrap"><b>Alberto Accomazzi</b></span></font></p><p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt"><span style="font-size:9.5pt;font-family:Arial;color:rgb(0,0,0);background-color:transparent;font-weight:700;vertical-align:baseline;white-space:pre-wrap">Program Manager and Principal Investigator</span></p><p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt"><span style="font-size:9.5pt;font-family:Arial;color:rgb(0,0,0);background-color:transparent;vertical-align:baseline;white-space:pre-wrap">NASA Astrophysics Data System</span></p><p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt"><span style="font-size:9.5pt;font-family:Arial;color:rgb(0,0,0);font-weight:700;vertical-align:baseline;white-space:pre-wrap">Center for Astrophysics | Harvard &amp; Smithsonian</span></p><p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt"><span style="font-size:9.5pt;font-family:Arial;color:rgb(0,0,0);background-color:transparent;vertical-align:baseline;white-space:pre-wrap">60 Garden Street | MS 83 | Cambridge, MA 02138</span></p><p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt"><span style="font-size:9.5pt;font-family:Arial;background-color:transparent;vertical-align:baseline;white-space:pre-wrap"><img src="https://lh4.googleusercontent.com/iEhls32f3S2RBzoI5DnklqaMcwuTNIBkcE1Q-iS9ixAQX6u-RMkuI-TmME1HmsCOkfAyFN0pWJ88fKnUbr4miiWKzL5NpjWz4SJikHk017WtLMSQNzqKQ9bmzzwgkZVvLNQvmNx-" width="350" height="2"></span><span style="font-size:9.5pt;font-family:Arial;background-color:transparent;vertical-align:baseline;white-space:pre-wrap"><br></span></p><p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt"><span style="font-size:9.5pt;font-family:Arial;vertical-align:baseline;white-space:pre-wrap"><a href="http://ads.harvard.edu" target="_blank"><font color="#000000">ads.harvard.edu</font></a></span><span style="font-size:9.5pt;font-family:Arial;vertical-align:baseline;white-space:pre-wrap"><font color="#000000"> | </font><a href="https://twitter.com/adsabs" style="color:rgb(0,0,0)" target="_blank">@adsabs</a><font color="#000000"> | </font><u><a href="https://ui.adsabs.harvard.edu" target="_blank"><font color="#000000">ui.adsabs.harvard.edu</font></a></u></span></p><p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt"><span style="font-size:9.5pt;font-family:Arial;vertical-align:baseline;white-space:pre-wrap"><u><a href="https://cfa.harvard.edu" target="_blank"><font color="#000000">cfa.harvard.edu</font></a></u><font color="#000000"> | </font></span><a href="http://cfa.harvard.edu/facebook" target="_blank"><span style="font-size:9.5pt;font-family:Arial;color:rgb(0,0,0);vertical-align:baseline;white-space:pre-wrap">Facebook</span></a><span style="font-size:9.5pt;font-family:Arial;color:rgb(0,0,0);vertical-align:baseline;white-space:pre-wrap"> | </span><a href="http://cfa.harvard.edu/twitter" target="_blank"><span style="font-size:9.5pt;font-family:Arial;color:rgb(0,0,0);vertical-align:baseline;white-space:pre-wrap">Twitter</span></a><span style="font-size:9.5pt;font-family:Arial;color:rgb(0,0,0);vertical-align:baseline;white-space:pre-wrap"> | </span><a href="http://cfa.harvard.edu/youtube" target="_blank"><span style="font-size:9.5pt;font-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