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Daily Solar Observations 15032016 0646UT - 2513:Cro; 2519:Hsx; 2520: ; 2521:Cro; 2522:Cao. Solar filters are typically made with a specially coated Mylar or glass substrate mounted in a cell that fits snugly over the front of the telescope.
2016-08-09 22:10:01       
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