Hi,
Took out my refractor to sun the objective lens to kill some minor fungi to stop them from spreading more. Is this an effective way? Roughly how long do I need to sun it before I'm sure the fungi is dead? =)
To the main point of this post - while looking at the lens under the sun, I noticed quite abit of little specs like dust on the inside of the objective. Is this harmful/does it affect image quality? Anyway to clean that since it's on the inside?
Jeremy