Hi Slawek,
How have you made a mistake? Are you hand-holding the camera to the scope?
You may have been told that the Nikon cameras are the ones to buy for digiscoping, but don't be disappointed with what you have. There may be a way round it.
The Canon A70 was on my shortlist recently when I was thinking of changing FROM the Coolpix 995 as I was not getting very sharp photos with it. Eventually I went for the Canon G3 due to some extra features, but you can digiscope with the A70 in exactly the same way as I do with the G3.
I have seen someone digiscoping with the A70, although they were hand-holding to the scope and getting some very good photos.
I will be posting some info on my setup as soon as I can get some photos together, but basically you could get a lens thread adapter tube to fit around your lens in place of the ring that is there at the moment. See second image on the page at:
http://www.steves-digicams.com/2003_reviews/a70_pg2.html and then make something to fit onto the end of this, as I did.
I made a digiscoping adapter from a piece of plastic plumbing joint and glued a step ring to the end and this then screws onto the extension tube. The size of the plumbing joint makes it fit exactly over my scope eyepiece with no screws needed. The zoomed out lens then gets as close to the scope eyepiece as possible. Although there is some vignetting, this can be cropped out on the computer.
You can see the latest photos taken in Scotland with this setup in my gallery. I should be able to get the full text and photos sorted out over the weekend. Quite a few people have expressed an interest in the setup, as the general assumption is that only the Coolpix cameras work. I made that mistake last year and dashed out to get what everyone else was buying.
As it turns out, and I have mentioned this elsewhere on the forum, I do believe I had a faulty camera, so this is not a complaint about the Nikons altogether. Some people are getting superb photos with them. It's just that you can get good results with cheaper cameras if you are prepared to make some compromises.
Also you can buy some bracket adapters that screw into the tripod screw on the base of the camera and then clamp onto the eyepiece. You then have to perform some adjustments in order to line up the lens and eyepiece. I did try a couple of these and returned them as they were a bit fiddly to use. Some people can get on with them though, so it's a matter of personal choice. Look in the Gallery under the Equipment and Accessories section - there are some examples there.
Don't despair just yet. :t: