Mirror telescope: blocked sight Today I try to watch Venus through a mirror telescope. I am no professional. No matter what lens I take, I see this image: What am I doing wrong?

Edit: What happens when I refocus:Sorry for the bad quality, I didn't manage to make better images. :-(
I think you just need to keep winding the focusser knob, you are way past focus in the first picture but you can see the image get smaller as you approach focus. The last image looks like you may be there or thereabouts, I think the colored diffraction patterns are caused by the camera optics.