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I recently started with astrophotography. I used a Canon EOS 80D with a 200mm telephoto lens. Now I got a Bresser 96-18760 - Skylux 70-700 telescope. I have already seen some beautiful nebulae. Now I want to attach my camera to the telescope. On the internet I have already found something of what I could use, but before I buy something I want to be sure that it will work. I have read that you can attach the camera to the telescope via a T2 ring and a special lens. For the T2 ring I found this: https://goo.gl/1GN4Zi. To attach the T2 ring to the telescope I found this: https://goo.gl/wgVBfX the only problem with this part is, that it isn't the correct size. It say's 1,25 inch, but my ocular is 1,6 inch. I can't find the correct part to attach my Canon 80D on my Bresser telescope.
I'm want to get into AP iamging DSOs but have focusing issues - nothing new there I guess.
My basic question is this:
Is it possible to use a DSLR and USB link to display live images on a Windows PC (or Android Tablet) with sufficient resolution to use a Bahtinov grating for focusing?
If so, which DSLR have people used in this way? And which software?
I have been trying without success to use my Sony A300 DSLR but the built-in LCD display is far too low resolution to see the fringes from a Bahtinov grating. The grating works great with an eyepiece so nothing wrong with the grating. And the Sony video out is of similar low resolution to the LCD display. And unless I'm missing a trick (please tell me if I am!) there is no way to get live images over the USB link.
As a very poor second best, is there any single software (for Cannon, Sony, whatever) that will allow triggering of images (Bulb mode) and upload the image almost immediately. I guess I could live with that just so long as I end up with a properly focused system.
My scope is a 6" f10 CS. And yes, I know f10 is too slow and I need a field expander but it's where I'm at at the moment. And unless I can crack the focusing all other issues are secondary.
Many Thanks for reading this far!