Esprit 80 with flattener outside 55mm spacing

[bilbo]

Hi All

Has anyone with an Esprit 80 tried or tested the dedicated flattener outside of the recommended 55mm spacing.  As you will know the flattener has a 48mm thread. My filter wheel would be perfect but has a 42mm thread, adding a 48/42 adapter will add around 7mm (62mm) total.  If I buy the 48mm SX adapter it will add 4mm to the distance (59mm total).

As the scope is an F5, I'm guessing that this distance is a little more critical.  An answer from someone who's checked this out would be most helpful.

cheers

Steve

 

 

 

[Icesheet]

Do you have a sketch of your imaging train? The only way to know is to try but I would expect 4mm out would be too much. There are plenty of posts around here that show even 1/10 of a mm can be critical. The size of your sensor would impact this too.