I own a Televue NP127 non is scope. The club members want to try filming a transit of the ISS next Tuesday using my NP127. They want to use a wedge and I told them I have a full aperature Thousand Oaks mylar filter but they say the wedge produces better images. My concern is letting the suns energy into the OTA and through the objective and then the Petzval corrector before reaching the wedge. Can I have any dangerous build up of heat doing this?