dust on inside of Refractor lens

[djpaul]

Hi

Is it anything to worry about having a small amount of dust on the inside of the glass on my Skywatcher 120ed Refractor?

Or is this normal

Paul

[Moonshane]

Totally normal. You can remove the lens and clean it but not really worthwhile.

[djpaul]

Many Thanks for the quick reply

I bought it secondhand and its almost like new 

I was just a little concerned 

Im guessing the front of the lens should not be cleaned too often either

But i did give it an air blow and a gentle wipe with a micro fiber cloth and some lens cleaner

Paul

[Moonshane]

I tend to clean my gear only when I sell it! It makes no difference to the views generally. Occasionally when I can see it (only really when on the eyepiece) I will clean it off though.  Ideally keep them capped and clean and they don't need cleaning. 

[djpaul]

Found it very easy to remove the lens afterall .... gave it a blow and a clean .... Thanks for all your help guys

Paul

[graemlourens]

Some very intelligent comment i once got to a similar question:

If you put your finger infront of the lense, the picture barely reduces in brightness, and you're finger is pretty thick compared to a few specs of dust.

So the dust is irrelevant for the most part. (even if it drives me NUTS mostly when there is even one spec of dust anywhere)

You'll do more damage than good cleaning too frequently.

[djpaul]

I dont intend doing it too often if at all

I got the scope secondhand and wanted to be sure it was only dust ... Which it was 

Paul