In Finger: Telescope Reviews: Rust and Coronado Scopes

SO, if heat load is the primary culprit in what appears to amount to delamination for lack of a better term (that's kind of what I get out or the post by Andy Lunt), couldn't we place some kind of IR filter in front of the PST and solve the problem? Seems like this could be done with an after-market front aperture filter of high quality... --------------------Kerry Quote:Quote:The guys running ...Finger