How often do you clean your scope mirror

[Taff]

I have have my reflector for 10 years but i never cleaned the main mirror.There are no marks on the mirror but is it over due for a clean or should i leave it alone Thanks.Mark

[asset189]

Im no expert,  but the old addage of if its not broken dont fix it seems sound advice? You say there are no marks on the mirror so its unlikely you will improve things by attempting ot clean it

[Tinker1947]

Leave it be, if there's no real marks on it......

[emadmoussa]

Never have done...

[cotterless45]

Wait until it's absolutely filthy or unless something's on it. I noticed drops of aviation fuel which were horrible to get rid of, no more leaving the Dob pointing straight up !

Nick.

[David Smith]

Had mine 7 years, cleaned twice I think. Certainly done it once not absolutely sure about the 2nd.

[Taff]

Thanks' Everyone for your reply with the mirror.I will take your advice and  leave it alone.Mark