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<blockquote style="position: relative; padding-left: 55px;"><section><a href="https://astrodon.social/users/VRubinObs/statuses/112888822482131143">Rubin Observatory (vrubinobs@astrodon.social)'s status on Friday, 02-Aug-2024 07:48:19 JST</a><a href="https://astrodon.social/@VRubinObs" title="vrubinobs@astrodon.social"><img src="https://gnusocial.jp/avatar/16194-48-20221103002303.webp" width="48" height="48" alt="Rubin Observatory" style="position: absolute; left: 0; top: 0;">Rubin Observatory</a></section><article><p>We officially have glass on the telescope! 🤩</p><p>Last week, Rubin Observatory staff safely installed the 3.5-meter secondary mirror—the first glass to be installed on the telescope! 🥳</p><p>Until now, testing the telescope was done using steel "surrogate" masses. But finally, it's time to put the telescope together for real🤩</p><p>With the first glass installed, we're in the final stretch of construction and on track to <a href="https://astrodon.social/tags/CaptureTheCosmos" rel="tag">#CaptureTheCosmos</a> in 2025!</p><p>🔗: <a href="https://rubinobservatory.org/news/secondary-mirror-installed" rel="nofollow noreferrer">https://rubinobservatory.org/news/secondary-mirror-installed</a></p></article><footer><a rel="bookmark" href="https://gnusocial.jp/conversation/3462092#notice-6805334">In conversation</a><time datetime="2024-08-02T07:48:19+09:00" title="Friday, 02-Aug-2024 07:48:19 JST">about 11 months ago</time> <span>from <span><a href="https://astrodon.social/@VRubinObs/112888822482131143" rel="external" title="Sent from astrodon.social via ActivityPub">astrodon.social</a></span></span><a href="https://astrodon.social/@VRubinObs/112888822482131143">permalink</a><h4>Attachments</h4><ol><li><label><a rel="external" href="https://gnusocial.jp/attachment/2987361">The secondary mirror of Rubin Observatory is lowered into final position on the telescope, as viewed from the other end of the telescope through the light-dispersing baffle for the primary mirror. The baffle forms a black circular border around the image. The secondary mirror supports form an X in the background with a teal ring in the center where the mirror will go. The mirror with its metal cover is just above the teal ring. Walkway platforms bisect the view from the left and right.</a></label><br><a href="https://cdn.masto.host/astrodonsocial/media_attachments/files/112/888/822/282/157/864/original/0217d328d313fd03.jpeg" rel="external">https://cdn.masto.host/astrodonsocial/media_attachments/files/112/888/822/282/157/864/original/0217d328d313fd03.jpeg</a></li><li><label><a rel="external" href="https://gnusocial.jp/attachment/2987362">Rubin Observatory staff install the secondary mirror on the telescope. The mirror is a thick disk with a hole in the center suspended in the air, with a metal cover protecting the reflective surface. Two staff work from above in a crane lift bucket held from a red arm that extends to the left. The telescope is tipped on its side for the installation, and the upper teal support ring appears vertically edge-on at the right side of the image.</a></label><br><a href="https://cdn.masto.host/astrodonsocial/media_attachments/files/112/888/822/279/588/743/original/5be4e26074af0713.jpeg" rel="external">https://cdn.masto.host/astrodonsocial/media_attachments/files/112/888/822/279/588/743/original/5be4e26074af0713.jpeg</a></li><li><label><a rel="external" href="https://gnusocial.jp/attachment/2987363">Rubin Observatory staff install the secondary mirror on the telescope. The telescope is tipped on its side for the installation, and the work is happening between the upper two teal support structure rings that appear vertically edge-on on either side of the image. At center, a staff member works from a scaffolding platform. The mirror is a thick disk, partially visible edge on and in place in the middle of the telescope. Two additional staff supervise from a crane bucket above.</a></label><br><a href="https://cdn.masto.host/astrodonsocial/media_attachments/files/112/888/822/293/932/021/original/63de9b10c8323f3d.jpeg" rel="external">https://cdn.masto.host/astrodonsocial/media_attachments/files/112/888/822/293/932/021/original/63de9b10c8323f3d.jpeg</a></li><li><article><header><div>Domain not in remote thumbnail source whitelist: storage.googleapis.com</div><h5><a href="https://rubinobservatory.org/news/secondary-mirror-installed">NSF–DOE Rubin Observatory’s Secondary Mirror Installed</a></h5><div></div></header><div>Vera C. Observatory is a brand new astronomy facility that will answer some of our biggest questions about the Universe</div><footer></footer></article></li></ol></footer></blockquote>

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Rubin Observatory (vrubinobs@astrodon.social)'s status on Friday, 02-Aug-2024 07:48:19 JST Rubin Observatory
We officially have glass on the telescope! 🤩
Last week, Rubin Observatory staff safely installed the 3.5-meter secondary mirror—the first glass to be installed on the telescope! 🥳
Until now, testing the telescope was done using steel "surrogate" masses. But finally, it's time to put the telescope together for real🤩
With the first glass installed, we're in the final stretch of construction and on track to #CaptureTheCosmos in 2025!
🔗: https://rubinobservatory.org/news/secondary-mirror-installed
In conversationabout 11 months ago from astrodon.socialpermalink
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