How to fight the Dust in EFW?

[RolandKol]

Hi guys,

Has anyone come across a Dust problem in ZWO EFW?

Not sure what I have done wrong, - 1 month ago I have checked the setup, it was just some dust (acceptable level) after almost 8 months of use,

but yesterday... I removed my camera again and my jaw has dropped.... Insane amount.... not sure why.... 1 month ago, I just checked all the filters visually, I have not unscrewed anything...

Insane... Is there any way to seal the EFW body completely? Silicone maybe?

My setup ZWO 1600mm, ZWO EFW, 11mm extension ring, ZWO OAG, CC.  It looks like it should be sealed... but not...

[tomato]

Just a thought, but if the dust levels have suddenly increased, maybe something has started rubbing in the drive mechanism which is creating dust internally? 

[ollypenrice]

Are you sure where the dust is located? It might not be the filterwheel. I have hardly ever found that bunnies originate from filters. You might find this helpful. https://www.ccdware.com/resources/dust.cfm

Olly

[RolandKol]

Sorry, I have not made a picture,

But I saw the dust on the filters directly, - not on the images (of-course, they are also present on images)....

So it is 100% present and in enormous scale... Mechanism works flawlessly, plus the dues is quite bright, - metal/plastic would be black as the EFW body.

I will put all a part during this week, clean it... and check how it goes for next month... 

really disturbing...

Edited May 20, 2019 by RolandKol

[Gina]

Very strange.  I just don't seem to suffer from dust on filters.  I do open the EFW indoors in a low dust area though when changing filters or camera/scope/lens.