I read some topics here that mentioned the more recent ED80 refractors having a 2.5" focuser instead of 2"
Mine seems to be a 2" but can't get it to focus...
I'm using a M42 adapter and 1 extension tube.
I made a mistake and purchased the Explore Scientific 3" field flattener (which I can't use) because it said it came with a 2" adapter.
But I'm hoping to be able to achieve focus regardless... hoping. If someone with ED80 experience can help.
Edited by azastronomer, 16 September 2020 - 08:12 PM.