I just opened a new set of Astrodon 1.25" E-Series II LRGB and 5nm Ha, SII and OIII filters inside a clean room at work. There is debris from what looks like the white foamy cut outs all over the filters. Some of the threads are marred. Some of the "tested and sealed by Astrodon" stickers are missing. The corners of some of the UPC stickers were already creased as if they had been peeled. Finally, there was a hair stuck underneath one of the UPC stickers.
I mounted them in the filter wheel and promptly felt like an idiot contaminating our cleanroom by using a blower to get the particles off the filters. I've opened a set of Baader visual filters before and had none of these issues. These were ordered from OptCorp. I've already mounted them inside my filter wheel for testing, but I'm hesitant to even use them as some of these particles will have to be removed by physical means. Another thread mentioned a film on the filters. Is there some kind of removable sticky cover I need to take off? Also thread mentioned paper inside the NB filters. I've seen this paper in an UHC visual filter before, but not these. Same foamy holders. I couldn't take a photo at the time because we aren't allowed to take any photos on site and have to cover our cameras on our phones.
What do I even tell OptCorp, "waiter, there's a hair in my $330 filter"?
Edited by je2000, 12 January 2018 - 09:06 PM.