I just bought a Celestron Wide Angle Eyepiece (http://www.celestron.com/browse-shop/sport-optics/accessories/wide-angle-eyepiece) for Celestron Regal M2 100ED Spotting Scope (http://www.celestron.com/browse-shop/sport-optics/spotting-scopes/regal-m2-100ed-spotting-scope)
According to Celestron's web site, the Wide Angle Eyepiece should work with Regal M2 100ED Spotting Scope. But it doesn't fit. The hole diameter on Regal M2 100ED Spotting Scope is 1 1/8 inch. The diameter of eyepiece is 1 1/4 inch, which is too big. I just can't insert the eyepiece.
What am I missing here? Or do I need to buy another adapter?
Thank you for helps.