2" T-adapter, do I need any special equipment?
Posted 15 January 2013 - 08:36 PM
I have the standard T-adapter for Canon cameras from Orion (http://www.telescope.../sc/62/e/44.uts)
Right now I'm using a 1.25" adapter. I want to move up to 2", do I need a new T-adapter?
Posted 15 January 2013 - 10:18 PM
Posted 16 January 2013 - 12:21 PM
Posted 17 January 2013 - 10:28 AM
the chain goes as such...
camera...2" T-adapter...2" camera adapter...2" focuser. or
camera...1.25" T-adapter...1.25" camera adapter...1.25" focuser.
There are quite a few variations of these camera to telescope setups, and these are the simplest.
it's ok, this confused me at first also.
If at first you don't understand.... GOOGLE!
Posted 17 January 2013 - 10:58 AM
If your T-adapter is a 1 piece, then yes, you will need both a new 2" T-ring and a 2" camera adapter.
What Phil was talking about was a using a common 2" to 1.25"
adapter with a compression ring in it, that is used for many different applications, but most commonly for using 1.25" EP's in a 2" focuser.
hope this helps.
Posted 17 January 2013 - 11:08 AM
probably! there might be other circumstances of which I do not know, like they might be glued! be careful! you will be working with very tiny setscrews and very fine threads that can crossthread easily.
Posted 18 January 2013 - 07:18 AM
But I guess I know why now! Thank you
Posted 20 January 2013 - 05:05 PM
To avoid vigetting the image you should get a T male to 2" insertion barrel adapter. See image below of the APS-C imager and the T ring opening. Telescope Warehouse, scophed1, on eBay sells one for about $20, he may be a vendor here, too. Best price I've seen.
Posted 21 January 2013 - 08:26 AM
Posted 21 January 2013 - 10:01 AM
Additionally, if you normally use a diagonal with your scope (you didn't mention what you have), you'll typically need some sort of extension to achieve focus such as this one ...
If you can afford a bit more money, I prefer this over the simple extension.