{"id":137,"date":"2016-11-12T16:10:16","date_gmt":"2016-11-12T15:10:16","guid":{"rendered":"https:\/\/escience.aip.de\/robo\/?page_id=137"},"modified":"2023-04-11T08:24:46","modified_gmt":"2023-04-11T07:24:46","slug":"vatt","status":"publish","type":"page","link":"https:\/\/pepsi.aip.de\/?page_id=137","title":{"rendered":"VATT overview"},"content":{"rendered":"\n

Until further notice the VATT-PEPSI connection has now been mothballed. However, it can be restarted any time once observing time at VATT has been granted.<\/strong><\/p>\n\n\n\n

The Vatican Advanced Technology Telescope (VATT) is a 1.83 m alt-az telescope located approximately 350 m away from the LBT building. It is jointly operated by the Vatican Observatory Foundation with the University of Arizona. Its optics consist of a f\/1.0 honey-combed borosilicate primary mirror with a 0.38-m f\/0.9 Zerodur concave secondary mirror making up a f\/9.0 Gregorian focus on the rear side of the primary mirror. The VATT is connected to PEPSI through its fiber injection unit FIU with a total fibre length of 453 m. The FIU must be mounted for every PEPSI run. <\/span><\/p>\n\n\n\n

The paper describing the technical details can be downloaded from here<\/a>.<\/span><\/p>\n\n\n\n

The VATT feed was offered for 40 nights a year. It was available in 2017A and 2017B.<\/p>\n\n\n\n

Fiber transmission is shown here:<\/p>\n\n\n

\n
\"vatt_transmission\"<\/a><\/figure>\n<\/div>\n\n\n

<\/p>\n\n\n\n

 <\/h3>\n\n\n\n

Fiber injection unit (FIU)<\/h3>\n\n\n\n

Fiber core diameter is 200 \u03bcm, fiber type is  PolyMicro FBP200240280400. Starting with semester 2017A, we employ a dedicated image slicer for the VATT fiber which enables a spectral resolution of R=200,000 at slightly higher effective throughput than before.
<\/span><\/p>\n\n\n\n

The optical design and the picture of the FIU are shown below:<\/span><\/p>\n\n\n

\n
\"fiu_optical_design\"<\/a><\/figure>\n<\/div>\n\n
\n
\"fiu\"<\/a>
Fiber injection unit attached to VATT.<\/figcaption><\/figure>\n<\/div>","protected":false},"excerpt":{"rendered":"

Until further notice the VATT-PEPSI connection has now been mothballed. However, it can be restarted any time once observing time at VATT has been granted. The Vatican Advanced Technology Telescope (VATT) is a 1.83 m alt-az telescope located approximately 350 m away from the LBT building. It is jointly operated by the Vatican Observatory Foundation … Continue reading VATT overview<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-137","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/pepsi.aip.de\/index.php?rest_route=\/wp\/v2\/pages\/137","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pepsi.aip.de\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/pepsi.aip.de\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/pepsi.aip.de\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/pepsi.aip.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=137"}],"version-history":[{"count":23,"href":"https:\/\/pepsi.aip.de\/index.php?rest_route=\/wp\/v2\/pages\/137\/revisions"}],"predecessor-version":[{"id":2049,"href":"https:\/\/pepsi.aip.de\/index.php?rest_route=\/wp\/v2\/pages\/137\/revisions\/2049"}],"wp:attachment":[{"href":"https:\/\/pepsi.aip.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=137"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}