The previous problem of odd shaped stars has been fixed... TO A POINT.
I have 2" filters which screw on to the nose piece of my Atik 11000 camera. This then slides into the 2" adapter of the Bintel economy focuser.
Here is the issue.
When I do not have a filter in the nose piece, all is good. Lovely diffraction pikes. Everything is spot on.
When I put my Orion 2" Ha filter in the nose piece, the diffraction stars look like they have 2 comet tails on either side of them. They are pointing up.
When I put my Baader 2" OIII filter in, voilla! Beautiful diffraction spikes.
So...
There is obviously a problem with the Ha filter SOMEWHERE! Can anyone explain what it could be?
Cheers!
DJ Scotty