I have a new telescope, a Celestron C8N-GT. I haven’t used it yet, but I did take it outside to align the finder scope. Yesterday I looked inside of the tube, and found one of thost leeeetle nasty cedar seeds stuck to the mirror. :mad: I hate those things! Being nearly a meter long, the mirror is out of reach. I thought about spraying some compressed air to see if I could dislodge the seed, but I’m concerned about residue. Besides, the air is at the studio. Another possibility is to put a camel-hair brish on a stick and brush it off. But if it’s sticking – as those seeds do on my car – then there’s probably some schmutz that needs to be cleaned as well.
The most direct action would be to unscrew the bottom end of the 'scope, take the mirror and mirror-mount out, and clean the mirror. But I’m converned about collimation.
How should I clean my telescope?