Topic/Presenter: Filters / J. Morse/M. Vincent Question/Comment: Is it really possible to get filters as narrow as 5 mm for all possible filter choices? Submitted by: Jon Holtzman NIC-FPS Response: Barr Assoc. has quoted using 5 mm thick substrates, for the 0.3% bandpass filters. They do not include the coating thickness in their quotes. The filter wheels will be sized to accomodate thicker filters (up to 10 mm thick?) The filter wheel closest to the pupil can accomodate 60 mm diameter filters by using an insert. Status: Closed.