How to focus using DSLR

[Abernus]

Hi all,

I recently bought a canon T-ring from SlySi84 and bought a Canon nose to T adapter. I decided to try it out yesterday by taking an image of the Sun. I popped my camera directly to the focuser tube of my 6" Reflector and tried to get the sun in focus, but I couldn't. When I popped a 2x Barlow in and then the Canon in to this I was able to achieve focus.

My question is do I have to always use a Barlow lens to achieve focus or is it possible without and I just need to make some sort of longer or shorter tub?

Sorry if this is a bit of a silly question but I just had to ask it.

Thanks

[adamsp123]

Did you have a proper sun filter on the front of the scope

[Abernus]

Yes I bought the Badder Solar Filter a while ago. I dread to think what state my scope and camera would be in if there was nothing there

[Merlin66]

Sounds like the usual problem of the focuser body being too long to allow the DSLR to get "into" focus.

Usual solution is either to change to a lower profile focuser, or move the main mirror up the tube by 30 mm or so ( You may be lucky and find enough forward adjustment on the main mirror collimating bolts/ springs - worth a try)

[Abernus]

Cheers for the responce. that sounds hard to do, is there anyone in the Durham area that is willing at some point to help me out with this. I don't fancy trying to move the mirror by myself as I don't fully know what I am doing yet.

Thanks.