dslr imaging magnification?

[chemtom24]

so with webcam imaging you can just use barlows etc or possibly even zoom/crop the image your are receiving - but what about if you want to get a bigger image when your'e using a dslr?

[Merlin66]

You can still use Barlows/ Powermates to get a longer focal length and larger plate scale. You can also crop around your image and enlarge it.....

[chemtom24]

how does the t ring adapter fit around a barlow tho? or do you buy a different type of barlow from the normal viewing one

[NGC404]

Some barlows like the skywatcher x2 deluxe have a T-thread on it.

Simply screw the t-ring on

[Merlin66]

Or use a 2" to EOS adaptor, or a 2" to EOS or a 2" to T thread screwed into your T2 EOS adaptor or 1.25" versions. Then just drop the nosepiece into the end of the barlow etc.

[jgs001]

Or use a teleconverter (sits between the camera and the T ring) and attach the camera in the normal way.. this doesn't move the focus point either...

[chemtom24]

thanks for all the help

jgs001 - i take it the advantage of that is that you wont run out of travel in the focusser? whats the price difference for one of them compared to the others?

[jgs001]

That's a good question. I've not looked at the cost of a new tc I got mine second hand and it was about the same as an average Barlow. Something to think about, what are you wanting to photograph with it ?

[chemtom24]

erm dso's, mainly nebula i guess, maybe i wouldnt even need a barlow, i was just curious if/how it could be done!

[blackparticle]

Or use a teleconverter (sits between the camera and the T ring) and attach the camera in the normal way.. this doesn't move the focus point either...

That's a good idea. Will reduce the risk of any dust getting into the camera too.