Focusing problem with dSLR

[Neeken]

So I http://www.teleskop-express.de/shop/product_info.php/language/en/info/p1971_TS-6--F-5-Newtonian-Telescope-with-Corrector-Astrophotography.html now.

And a T-ring.

I equipped the T-ring on my dSLR, then the Coma Corrector onto the T-ring. Then I attached it directly on to the focuser..

However, it seems like I'm not able to set focus on infinite. (The closer I get to the secondary mirror, the further away I'm able to focus it seems). And at the moment it's as close to it as possible, without any extensions on.

It's stated on the website above, where I ordered it from "If you want to use a SLR camera, all you need is a M48 ring for your specific camera model"

I have a feeling it might not be that easy? Is it cause of the model? Do I need to use a barlow to pull the focus point further out?

Or might it be something else I missed?

[Neeken]

Wow, that font got very small. Sorry about that.

It's stated "If you want to use a SLR camera, all you need is a M48 ring for your specific camera model"

[Stevp]

Sounds like a barlow is the way to go, but there are plenty of others here that can advise better than me. Can you achieve telescope without the coma corrector in the mix?

[Stevp]

oops, can you achieve *focus* without the coma corrector.

[Neeken]

I'd have to get a T-adapter first.