Attachning canon dslr to ST80, what do I need?

[Ags]

I need a t-ring, right? Do I need an extension tube - if so which one and where can I get it?

[Ags]

Help! I have a credit card in my hand - this is an emergency!

[Sam]

I'm not 100% sure on this as I attach an QHY5 to my ST80 but have to use a barlow without the lens (basically a homemade extension tube) to get focus. I assume that it would be the same situation for connecting a DSLR?

[Rossco72]

The end of the focuser should have a T-Thread on it. It should just need a T-Ring for your camera and screw the two together.

[Ags]

THanks - I'm thinking of getting this:

Verlängerungshülse - 2' Filtergewinde - 20mm Länge

[Rossco72]

I'm not sure that will help.

Does the end of your focuser unscrew to reveal a t-thread? If so, the worst case would be to get a t-thread extension. However the skywatcher blurb says you can connect a DSLR directly and come to focus!

Cheers

[Ags]

Good point - I will get an extension later if I need to...

[sherr03]

I use a barlow without the lens on my ST80 and can just about acheive focus.

[Ags]

According to Teleskop Service I should not need an extension. I'll post my experiences when I have the scope and camera in hand.

[Photosbykev]

The position of the DSLR sensor is much further back than the sensor in a CCD . Using a CCD camera you do need an extension ring around 20-25mm long. I would expect the extra distance of the DSLR sensor and a t-mount adaptor would remove the need for an extension tube

[Rossco72]

That's what I understood Kev, attach to the T-Threaded focuser directly and the 55mm to the chip should come to focus.