Washer with the finder scope

[Onebitrocket]

I've bought the skywatcher 130p az go to

Theres a loose washer that came with the finder scope.

it appears that it could fit around the outside of the scope.

is this a part that's come off or just something I can get rid of?

Thanks

[John]

If you mean the rubber O ring, it goes around the tube of the finder and holds it firmly in the front part of the mount. Without this the finder won't hold position in it's mount when adjusted to match where the scope is pointing.

[Onebitrocket]

Thanks John,

After closer inspection of the finder scope, I see there is a small grove about half way along the scope for the o-ring to sit, and there is a wider grove near the thinner end where the sprung clip on the mount clicks into place