Hi,
I just bought a 1.25" helical focuser to use with my Dob and am looking for an adapter so I can use it in my 2" Crayford focuser. The helical focuser is threaded with M31. However, I seem unable to find the appropriate M31 to 2" adapter. Does anyone know where to find one in Aus? I don't want to wait 2 months for an Ali order.
eBay link to focuser