Thank you all for the responses! So it is a 2" focuser adapter after all.
Quote:
Originally Posted by Allan_L
Hi there,
Yes it looks like an eyepiece adapter.
Perhaps it is a 1.25 inch adapter. (allows you to put a standard 1.25 inch eyepiece into a 2" focuser).
Some people (especially with skywatcher DOBS) don't realise they have to remove the 2" adapter, before putting the 1.25" adapter into the focuser tube.
Therefore, they can't bring it into focus.
That is, they cannot be used together.
See if this is the case for you.
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This makes a whole lot of sense as I couldn't focus any of my eyepieces when the adapter was connected!
Thank you all for your help and also for the warm welcome.
