Nice Clean Primary!

[cloudsweeper]

Well, it was a bit mucky - although it still performed well.  Anyway, I thought I'd give it a clean, as I haven't done this with the Bresser Dob before.  I marked the positions of the screws, and removed the cell - gentle brush/blow - then a spray with Baader Wonder Fluid.  After that soaked in a bit, I rinsed the mirror with distilled water, then dried it off with warm air.  Put it all back, re-collimated, job done, and it looks a whole lot better!

At no point did I touch or rub the mirror. 

Having been apprehensive, the whole process was quite quick and easy.  Plenty of care required though!

Now for some action soon......

Doug.

(Wish I'd taken some photos!!)

 

 

[niallk]

[Marvin Jenkins]

Nice. Two years from purchase and for the first time looked into my newt at the main mirror, dirty!!! Yes, spots blobs and with a great big hair laying across it’s face.

I’m going in.. always been scared until I read this. Thank you for the confidence boost.

Marv.

[cloudsweeper]

6 minutes ago, Marvin Jenkins said:

Nice. Two years from purchase and for the first time looked into my newt at the main mirror, dirty!!! Yes, spots blobs and with a great big hair laying across it’s face.

I’m going in.. always been scared until I read this. Thank you for the confidence boost.

Marv.

Glad to help Marv!  Take it slowly and carefully, and it's a piece of cake.  

Doug.

[Marvin Jenkins]

Good thing is it’s only a 130 mirror, but I don’t want to muck it up as it is my first scope and although I know it will not be my last, I will never let it go.

I guess it’s that first moon and first Messier, stay with you forever.

[Portech7]

Just cleaned my 150P primary mirror for the first time. Was worried, but it wasn't that bad and didn't take long either but being very careful is paramount. Nice and shiny now.