Celestron Ultima 35mm eyecup

I bought one used but it came without the eyecup.
Scopestuff and Orion sell a winged eyecup but it doesn't fit in the Ultima 35mm due to the large size of the lens.
Where can I find this eyecup ?

Fernando,

I have used the 35 mm Ultima with the standard winged eyecup. I found it of no use in helping my eye placement for the long eye releif of this EP. I purchased the round eye cup from Orion. If you stretch it, it fits fine on the EP. The advantage of this eye cup is that it perfectly aligns your eye for the 35 mm eye relief. Give it a try - they are not expensive.

John