Cleaning the main Reflector mirror

[Taff]

Hi' What i like to know how often should a Main mirror in a Reflector be cleaned.I have had my Reflector for around 15 plus years can't see no dust on the mirror only 3 little dust specks on the mirror the rest of the surface looks clean.Should i try to remove the little bits of dust or leave them alone because they don't get in the way while viewing through the scope Thanks.Mark

[Cornelius Varley]

Three small specks of dusts will make hardly any difference to the image quality - leave the alone.

[RolandKol]

10 minutes ago, Taff said:

Hi' What i like to know how often should a Main mirror in a Reflector be cleaned.I have had my Reflector for around 15 plus years can't see no dust on the mirror only 3 little dust specks on the mirror the rest of the surface looks clean.Should i try to remove the little bits of dust or leave them alone because they don't get in the way while viewing through the scope Thanks.Mark

I would suggest leave them there for next 5 years...
As per my short experience, - small bits do not have any impact...
 

My garden is full of trees and the primary got quite dirty during 1 year, - I was even afraid to look at it... It looked very dusty plus, had some spots (similar to resin from the trees).

I do astrophotography, so I cleaned the mirror while flocking the tube. 

No extra, super improvement at all!  
 

 

[Taff]

Thanks Peter' and Rowland' for your advice.Mark.

 

[MarsG76]

3 little specks?? leave them alone... cleaning them will not change what you see.

 

[Taff]

Hi' Thanks for your reply.Mark

[Pancho61]

Right it is not necessary to clean it if you have only 3 little speck it did not affect anything but if you want absolutely clean it you can follow this video:

 

I follow for cleaning my ES dob it will be find.