ASI1600mm-cool-Esprit 120ed Triplet Back Focus

robin

Hi Sam,

I have the ASI1600mm-c, I have connected to this camera the ZWO EFW. This connects into my Esprit 120ED triplet corrector.

The issue is this,. as I understand it according the back ASI the back focus is 56mm. In the Sky watcher manual is 75mm from the sensor to the corrector. so the question is this should it be 75mm or 56mm.

Cheers

Robin

Support@ZWO

I think need to buy another extender to add 19mm. Maybe make a customized extender for whole imaging train will be better.