Cleaning filters and ep's

[Ozone]

Can this method also be used on filters and EP's?

To clean correctors, I have several large ones, I use one drop of washing up liquid to a cup of warm water as a cleaning agent. I dip a cotton wool ball into it and then drag it across the corrector with the telescope inclined downwards to avoid water getting inside the tube. Repeat this until clean. Afterwards repeat with just distilled water then dry off and gently wipe with a microfibre cloth if necessary. If you are concerned about doing this, don't bother, if you could see or image dust on the corrector then the large central obstruction would also be seen. As already posted, the problem lies either on the eyepiece, diagonal or the camera sensor (most likely). A Barlow lens will make the appearance worse.

[Stu]

Far better off using something like Baader Wonderfluid on eyepieces, far less chance of liquid working it's way in between lens elements.

[Alien 13]

Lens Pen...

Alan

[Ruud]

There are 42 ways to clean your glass.

[Nigella Bryant]

24 minutes ago, Ruud said:

There are 42 ways to clean your glass.

I thought 42 was the answer to the question of life, the universe and everything. Hence, I guess 42 ways to clean your glass comes within the remite of everything, lol. 

[Ben the Ignorant]

A little bit of gentle solvent, very soft rag and gentle pressure can't fail.

[GlenM]

I stopped using lens pens when I scratched a filter, although I thought I had blown off most of the dust. Just a thought.

 

Glen.

 

[Stu]

2 hours ago, GlenM said:

I stopped using lens pens when I scratched a filter, although I thought I had blown off most of the dust. Just a thought.

 

Glen.

 

I tend to avoid them too Glen, I've heard a few stories like yours....