Looking for 2" self centering adapter

[Danker16]

I have a 8" in orion dob I bought a self centering 1.25 adapter but I also would like to get a 2" adapter for the dual Spd crayford focuser. Any suggestions?

[Tinker1947]

Not sure if Baader Click-Locks are self centring, they have 3 points of contact behind a brass rim to lock EP's in place so should centre any EP they hold......

[rwilkey]

Hi Danker16, not quite sure what you mean, just to clarify, the adaptor I have is a 2" to 1.25" self-centering adaptor, like this one:

http://www.telescopehouse.com/acatalog/Orion_Precision_Eyepiece_Centering_Adaptor__2513.html

Is this what you have already, or are you looking for something different?

[Tinker1947]

Hi Danker16, not quite sure what you mean, just to clarify, the adaptor I have is a 2" to 1.25" self-centering adaptor, like this one:

http://www.telescopehouse.com/acatalog/Orion_Precision_Eyepiece_Centering_Adaptor__2513.html

Is this what you have already, or are you looking for something different?

I read that Danker wants  a  2" self centring adapter......

[Danker16]

Yeah i have the 2 to 1.25 but I want a self centering adapter for a 2 in eye piece. The thumb screws really throw the 2 in eye piece of center. Looking to get a spot on collimation and star views

[Tinker1947]

One of these will self centre (i think) just depends if you have to use a extension on my Dob it save a 2" extension and makes for quick safe changing of EP's..

http://www.firstlightoptics.com/adaptors/baader-2-inch-click-lock-cl-extension-47mm.html

[szymon]

It looks like what you want is something like this:

https://www.altairastro.com/product.php?productid=16412

I'd be wary buying from Altair Astro if you want it in a hurry though, they promised me a next day delivery for which I paid £6 and didn't receive the item until I called them three days later, at which point they finally sent it (and not on 'next day' either, though I managed to pick it up from the courier's depot on the next day).  If you wanted to buy this, I'd suggest finding a stockist at a real astro shop.

[Danker16]

https://www.altairastro.com/product.php?productid=16412 yea i was looking at this I have 28mm eye piece that i use very often. But i dont think i need the extension , is the altair one unit or does it have an option to remove the extension?

[Danker16]

?

[Tinker1947]

The thinner bit is there to fit into the focuser, the fatter bit is the shelf centring part, you need both....

[rwilkey]

Not sure if you resolve the extension bit, means you will have more outward focus.  As long as you have plenty of inward focus to play around with I am sure it can be counteracted.  I certainly have that on my frac, where I sometimes use an extension with high power ep's (I use the Baader FTR's as extensions when the need arises).