<\/a>Majestic Natalie <\/div>
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<\/a>Bandit Bill <\/div>
He's cleaning epoxy out the the separated gondola tube<\/div><\/div>
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<\/a>All six telescopes installed <\/div>
Seen from below, with heat straps and electrical cables<\/div><\/div><\/div>
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<\/a>Sean <\/div>
I have no recollection of what he's trying to communicate<\/div><\/div>
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<\/a>Ed tapes up filters at the bottom of a vacuum window <\/div>
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<\/a>Johanna works on the top side <\/div>
Primarily testing half-wave plate rotation mechanisms<\/div><\/div><\/div>
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<\/a>Anne closes up the bottom <\/div>
This is one of two vapour-cooled shield layers (from formerly liquid helium) that keep SPIDER cold<\/div><\/div>
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<\/a>Sasha prepares filters <\/div>
Each VCS layer has filters on the business end of the telescope<\/div><\/div>
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<\/a>Jamil and John balance the reaction wheel <\/div>
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<\/a>Half-wave plate installation <\/div>
With Sean and Johanna<\/div><\/div>
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<\/a>More bottom closing <\/div>
It's a long and tedious process<\/div><\/div>
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<\/a>Ziggy rocking his overalls <\/div>
As he test fits filters with top-dome insulation<\/div><\/div><\/div>
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<\/a>John and the half-wave plates <\/div>
All the HWP people pose with their work, before it gets covered<\/div><\/div>
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<\/a>Sean's turn <\/div>
<\/div><\/div>
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<\/a>And Johanna <\/div>
<\/div><\/div><\/div>
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<\/a>John takes photos, and sets up a timelapse video <\/div>
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<\/a>Cynthia and her SPIDER shirt <\/div>
On the bottom<\/div><\/div>
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<\/a>Sean (and I) test HWP rotators, with a temporary electronics setup <\/div>
<\/div><\/div><\/div>
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<\/a>Ed attaches windows to the top dome <\/div>
<\/div><\/div>
<\/a>
<\/a>Anne modifies multi-layer insulation <\/div>
It's new and lacks attachment holes<\/div><\/div>
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<\/a>So many KF clamps <\/div>
<\/div><\/div><\/div>
<\/a>
<\/a>The tube <\/div>
Down SPiDER's unused center port<\/div><\/div>
<\/a>
<\/a>Completed top side <\/div>
(Except the center port is not yet covered)<\/div><\/div>
<\/a>
<\/a>Team ladder: Sasha and Lorenzo <\/div>
Closing the top. For which Lorenzo's tall-person powers are useful<\/div><\/div><\/div>
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<\/a>![\"Ziggy](\"https:\/\/farm6.staticflickr.com\/5604\/15599240940_d2695f8be7_n.jpg\")
(Backlog from November 7-8) With all the telescope inserts installed, the bottom of Theo (our vacuum vessel\/cryostat) is ready to close. On the top side, the half-wave plates need to be installed in their rotation mechanisms above the inserts. Then closing proceeds there as well. To keep Theo cold, progressively colder nested layers of vapour-cooled shield are used. These get cooled by the vapour from boiling liquid helium (the vapour is still very cold), and are separated by vacuum and shiny multi-layer insulation. Installing the shield close-outs and insulation takes a lot of long and somewhat tedious labour. Plus lots of tape. The job was finished by a small team on the following day, while the rest of us took a Sunday off. […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[17,8],"tags":[],"_links":{"self":[{"href":"http:\/\/droppingballast.com\/index.php?rest_route=\/wp\/v2\/posts\/6416"}],"collection":[{"href":"http:\/\/droppingballast.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/droppingballast.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/droppingballast.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/droppingballast.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6416"}],"version-history":[{"count":1,"href":"http:\/\/droppingballast.com\/index.php?rest_route=\/wp\/v2\/posts\/6416\/revisions"}],"predecessor-version":[{"id":6417,"href":"http:\/\/droppingballast.com\/index.php?rest_route=\/wp\/v2\/posts\/6416\/revisions\/6417"}],"wp:attachment":[{"href":"http:\/\/droppingballast.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6416"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/droppingballast.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6416"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/droppingballast.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6416"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}