Confused about T Adaptors....

[kirkster501]

Hey guys, some advice about T system please to use with a Canon EOS?

So a T eyepiece adaptor goes into the 'scope focuser right and then a camera adaptor screws the camera body into the adaptor (I think I get this bit) ?

So I was looking at this 'scope adaptor:

http://www.firstligh...ra-adapter.html

But that's only a push fit onto the scope focuser (and the camera adaptor screws into the threads of this scope adaptor?). My worry is that if this is push fit, that's a lot of expensive camera held on by two focuser screws. Do they make these adaptors so that the scope adaptor SCREWS onto the telescope focuser instead? In my case I'd want one that threads onto my ED80.

This adaptor business is quite confusing !

Thanks, Steve

[Cornelius Varley]

I've never had a problem using a camera nosepiece. That nosepiece (I have one) has an undercut on the barrel which helps prevent the camera slipping.

Peter

[Tinker1947]

There quite secure when pushed into the focus tube, they have a lip so they can't slide out when the 2 thumb screws are nipped up....

[kirkster501]

Thanks. Do you guys tie the camera neck strap through the telescope mounting hoops "just in case" something were to slip out of the focuser?

[GJBC]

Thanks. Do you guys tie the camera neck strap through the telescope mounting hoops "just in case" something were to slip out of the focuser?

Well i did but not only for piece of mind but it stops the strap flapping about causing movement.

[shinok]

hi, does anybody know if the celestron universal 1-1/4" T-adapter is any good, can't deside which one to get? any advice on this or any others would be very much apreciated

cheers

[pmlogg]

Steve

As you say, adapters are confusing. There are lots of different adapters to T -thread, alternatively called T2 or M42x0.75mm (not to be confused with the Pentax M42x1.0mm). I don't know what thread the ED80 has to suggest any particular adapter that would screw onto it but once you know what it is you can just google to seek one out. Again, I'm not familiar with the ED80's focuser. If it doesn't rotate then you need to have some way of rotating your camera to frame images if you don't use a push-fit. You can get a simple T-thread to T-thread rotator (TST2WE) from Teleskop Express in Germany. It's quite thin, using just 5.5mm of back-focus.

[pmlogg]

Steve

I should have added that I definitely hook my camera strap over something, both to keep it out of the way but also to ensure that it can't fall. I do the same with my CCD camera, having added a safety strap to it.