So... after summoning up the courage, I finally got around to removing the corrector plate on my 8” EdgeHD, cleaning necessary, really bad water stains on the interior of the corrector (made the mistake of leaving it outside under a supposedly breathable cover) . I had been forewarned of the silicon sealing compound that Celestron for some reason believed was a necessary finishing touch to their ‘flag ship’ range of SCTs and dealt with it with my trusty Stanley knife. However, on removing the corrector plate and cleaning away the excess silicon I was surprised to find very poor finishing along one edge of the corrector. It looks for all the world like grip marks from tooling, I have no knowledge of the manufacturing process so this is just me adding 2+2. I realise that regardless of the implied quality of the EdgeHD range, these are commercially manufactured optics, however it still struck me as poor quality control from Celestron. Easy to disguise in this case, as they say ‘out of sight out of mind’. Has anybody else found this with Celestron optics?
Edited by Paul J, 13 April 2021 - 04:13 PM.