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主題: 以前大折射鏡 Great Paris Exhibition Telescope of 1900 作者: peter 於 2017-08-08 23:21:14 https://www.thevintagenews.com/2016/05/23/giant-telescope-universal-world-exposition-paris-1900-largest-refracting-telescope-ever-constructed/
(https://www.thevintagenews.com/wp-content/uploads/2016/05/The-Great-Telescope-installed-from-the-ocular-lens-end.jpg) (https://www.thevintagenews.com/wp-content/uploads/2016/12/85-2-640x453.jpg) The eyepiece holder. (https://www.thevintagenews.com/wp-content/uploads/2016/12/82-2-640x444.jpg) The telescope overall side view (top); the siderostat (left) and lens tube (right); ocular lens end (inset). WIKI https://en.wikipedia.org/wiki/Great_Paris_Exhibition_Telescope_of_1900 (https://upload.wikimedia.org/wikipedia/commons/d/d8/Great_Ex_Telescope_Complete.jpg) https://www.youtube.com/watch?v=n-4R72jTb74 (http://i1.wp.com/terraoko.com/wp-content/uploads/2016/09/tumblr_inline_n91jkhwqvv1sobcge.png?w=768) (http://i2.wp.com/terraoko.com/wp-content/uploads/2016/09/terraoko-2016090925-1.jpg?w=768) MORE https://en.wikipedia.org/wiki/Exposition_Universelle_(1900) |