[Wavytone]

Bojan nice try but I think you need a lot more magnification and a shorter exposure to suppress the glare from Procyon A. Even better would be an occulting bar to block the light from A. You have to cleanly show the diffraction rings - and dark spaces between them - to have any chance at imaging Procyon B.

Sirius B is about 10.8 arcsec from A. Procyon B is about 4 arcsec from A which in your scope puts it roughly in the 3rd dark ring. You need to be showing the airy disk and the rings cleanly. In the left image, Procyon B is buried in the usual Celestron "blob" (left image). If all you're getting is the blob... no chance.

Contrast is obviously a whopping challenge with this and with really perfect optics the Mk1 eyeball has a wider dynamic range than any camera.