Jump to content
  • Join the online East Midlands astronomy club today!

    With active forums, two dark sites and a knowledgeable membership, East Midlands Stargazers has something for everyone.

2" filter & Revelation Astro ED 2x Barlow


Recommended Posts



As i may be looking to purchase an O-III or a UHC filter sometime in the future, I've a question thats been bugging me for a while.


By picking up a 2" filter, would I also be able to use it with 1.25" EP's if I unscrew the lens of my 2x Barlow and replace it with the filter? Do they fit and are they the same thread pitch?


I'd guess I'd be using my 20mm and 32mm EP's with the filters, but they are 1,25 and 2" respectively and I'm not going to buy the same filter in two different sizes.





Link to comment
Share on other sites

Depending on the type of focuser on your 200p, you could fit a 2" O111/UHC onto the 2"end of the 2" - 1.25" adapter, this would allow you  to change 1.25"eyepieces without having to move the filter

Link to comment
Share on other sites

I'm confused. The only 1.25 to 2" adapter I'm using with my scope doesn't appear to have any thread on the end which locates in the focuser. Its kind of tapered.


It also unscrews in two, and looks like it might fit an SLR camera or something (I no longer own one, so cannot verify).

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.