3" focuser adapter availability?

[OpusElite]

Does anyone know if there is such a thing as an adapter to fit 2" or 1.25" eyepieces into a 3" focuser please?

All my searches have failed, maybe I'm using the wrong search words. 

[globular]

There will usually be some sort of thread on your 3" focuser... and you get a 2" holder that screws into that.

e.g. https://www.firstlightoptics.com/adapters/baader-clicklock-m75a-x-1-for-feather-touch-3-focusers.html

[OpusElite]

17 minutes ago, globular said:

There will usually be some sort of thread on your 3" focuser... and you get a 2" holder that screws into that....

Many thanks for the info and link, I really appreciate the speedy reply.

Aha, there is indeed a thread on the 3" focuser. I will measure up and check if it matches the item you suggested. 

[globular]

good luck and measure carefully - there are all sorts of very similar looking but frustratingly different ones to catch you out.

[globular]

Explore Scientific make a 3" diagonal that comes with a 3" to 2" reducer.....
https://www.bresser.de/en/Astronomy/Accessories/EXPLORE-SCIENTIFIC-Star-Diagonal-Mirror-76-2mm-3.html

But a quick search and I can't see that they sell just the reducer on their own.....  might be worth asking them (or Bresser) if they can get you one.

[OpusElite]

6 minutes ago, globular said:

good luck and measure carefully - there are all sorts of very similar looking but frustratingly different ones to catch you out.

Cheers, I've been through similar with adapters for an old Prinz scope. I now own a digital vernier and a set of thread gauges. I knew they would come in handy again

[globular]

Clicklock clamps are very good - but they are quite bulky and you might have focus travel issues with some eyepieces.
The Explore Scientific one is not such a nice clamp but is better at not using up so much focus travel.
In reality I suspect it will depend on the actual thread you have and availability of the ES as to which way to go.

[Don Pensack]

Deep Space Products sells a 3" to 2" drop-in adapter:

https://www.deepspaceproducts.com/product/reducer-adapter-for-3-0-compression-ring-opening-to-accept-2-0-accessories

[OpusElite]

4 hours ago, Don Pensack said:

Deep Space Products sells a 3" to 2" drop-in adapter:

https://www.deepspaceproducts.com/product/reducer-adapter-for-3-0-compression-ring-opening-to-accept-2-0-accessories

Thanks, that was the type of thing I had in mind. 

[OpusElite]

Well this is rather embarrassing, but I will confess as a lesson to others 😳

My thread was instigated by the purchase of a used 10" telescope. A friend who knows 'a little bit about astronomy' took one look at the focuser and said "that's huge, it's got to be 3 inches". So I started the hunt for 3" to 2" adapters.

Following the good advice by 'globular', I set to work with my trusty Vernier gauge today, only to find the eyepiece holder is in fact ... for 2 inch eyepieces!

Lesson learnt, don't believe everything you are told and double check before posting in a forum.