I'm requesting this information again, since the last time I posted it, it didn't get properly answered. Anyway here I go again.
I have an Esprit 100ED, Starizona Flattener/Reducer, ASI 294MC, Starizona Filter Slider.
The question is where is the best practice to placing the filter????? Should it be right after the Flattener or Right before the camera? or does it matter?
Knowing where this should go will help in figuring out the 58.5mm back focus I need. Yes I said 58.5mm (According to Starizona when using the APEX ED and a filter you need 58.5mm)