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Merlin66
18-12-2013, 10:06 AM
Probably not the correct section to post, but this will be of interest to all the solar observers....
Maier Photonics ( with some help from Dave over on the Solar Chat site ;) ) have developed a replacement ITF which fits the existing holder in the PST eyepiece holder.
If you have a "blue" objective PST with a failed "mini-erf" this could be the solution for you.:):)
Check it out.

http://maierphotonics.com/656bandpassfilter.aspx