How do i convert my 1.25 to a 2in so i can use the meade 56mm 2in eyepiece?
I have a meade etx-90ec scope and i want to purchase a 56mm eyepiece but its 2in and i only have the 1.25 standard that it came with. how do i get the 2in to fit?
Optics - Meade - 07178-02, Eyepiece Super Plossl 56 mm 2 inch
Answers & Comments
The ETX90 may not have enough back focus for a 1.25 to 2 inch adapter. You will need 1.6 in extra focus. (Try putting a eyepiece barely in the holder and see if you can focus CAREFULLY!) a 56mm eyepiece will seriously vignette since the opening of the scope is only 1.25 inch so do not expect a wide field.
Link below is for an adapter
http://agenaastro.com/blue-fireball-1-25-2-eyepiece-adapter.html