As has been documented in various places, the cheaper RC scopes (and associated brands - Orion, iOptron, Astro-Tech, Apertura, TPO and others) suffer from aberrant light directly reaching the camera sensor, causing reflections and the inability to take sufficient flat frames. This baffle extensions eliminates this proble.
I stupidly ordered 2 of these things. They're $29USD plus shipping (which was another $32 USD) - All up about $90AUD
I'll take $40 plus shipping
Note; this is for a 10" version.
More information available
here and a video on the subject can be seen
here
