Does Atik/Artemis make any kind of plug for the MFW (5 position Manual Filter Wheel)? I'm talking about the opening where one can manually rotate the wheel and also see which filter is in place. When not in use, this opening allows all kinds of dust and contaminants to get into the optics train, particularly degrading the filters themselves in very short order.
If there is not an "official" plug for this opening, do you have any suggestions on how best to deal with it? I'm sure I can't possibly be the only purchaser who has experienced this issue.