[gaseous (Patrick)]

Hi all,

I've recently purchased a 9-slot 1.25" filter wheel, and have struck the problem of not being able to focus it without using a Barlow. It will "just" focus with a 40mm EP without a barlow, but no other EP will come close. I've since read of people having this problem with dobs (I really should have done a little research first), but haven't really come up with a solution. Apologies if this has been discussed somewhere on this forum - I couldn't find it anywhere and would be grateful to be pointed in the right direction. I've got the wheel right against the focuser opening with a type of ring adapter, so I'm at the bare minimum distance EP to focus tube, but it's still too far. Will I need to buy some sort of low power barlow, or put it down to experience and try to on-sell it? Cheers.