Bahtiov mask

[Adidaz 29]

Last night I tried my dlsr on my ed80 scope I focused the star on my view finder on my camera it was sharp but I was told to put the mask on to make a cross and get the star in middle of the cross hairs  but I put the mask on to focus with my live view but I did not get the cross gains on my camera view I've tried focusing but nothing happen I get the star small like a dot with or without the mask can anyone help me get better sharp focus many thanks darren

[knobby]

Probably need to up the ISO in live view to show the spikes or take a test image at say 5 seconds and tweak as needed.